./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 f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/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 0.1.25-f470102 [2019-12-07 16:44:49,771 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 16:44:49,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 16:44:49,781 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 16:44:49,781 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 16:44:49,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 16:44:49,783 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 16:44:49,785 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 16:44:49,787 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 16:44:49,788 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 16:44:49,788 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 16:44:49,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 16:44:49,790 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 16:44:49,791 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 16:44:49,792 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 16:44:49,793 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 16:44:49,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 16:44:49,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 16:44:49,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 16:44:49,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 16:44:49,800 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 16:44:49,801 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 16:44:49,802 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 16:44:49,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 16:44:49,804 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 16:44:49,804 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 16:44:49,805 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 16:44:49,805 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 16:44:49,806 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 16:44:49,806 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 16:44:49,806 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 16:44:49,807 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 16:44:49,807 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 16:44:49,808 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 16:44:49,809 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 16:44:49,809 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 16:44:49,810 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 16:44:49,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 16:44:49,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 16:44:49,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 16:44:49,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 16:44:49,812 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-12-07 16:44:49,824 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 16:44:49,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 16:44:49,825 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 16:44:49,825 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 16:44:49,825 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 16:44:49,826 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 16:44:49,826 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 16:44:49,826 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 16:44:49,826 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 16:44:49,826 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 16:44:49,826 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 16:44:49,826 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 16:44:49,827 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 16:44:49,827 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 16:44:49,827 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 16:44:49,827 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 16:44:49,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 16:44:49,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 16:44:49,827 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 16:44:49,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 16:44:49,828 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 16:44:49,828 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 16:44:49,828 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 16:44:49,828 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 16:44:49,828 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 16:44:49,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 16:44:49,828 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 16:44:49,829 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 16:44:49,829 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 16:44:49,829 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 16:44:49,829 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 16:44:49,829 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 16:44:49,830 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 16:44:49,830 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/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 [2019-12-07 16:44:49,942 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 16:44:49,953 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 16:44:49,956 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 16:44:49,957 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 16:44:49,958 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 16:44:49,958 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/bin/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2019-12-07 16:44:50,010 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/bin/uautomizer/data/e1615f1f2/7be484beec6f4d8cb16d7f6c6275ac37/FLAGef7d9ff15 [2019-12-07 16:44:50,421 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 16:44:50,422 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2019-12-07 16:44:50,427 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/bin/uautomizer/data/e1615f1f2/7be484beec6f4d8cb16d7f6c6275ac37/FLAGef7d9ff15 [2019-12-07 16:44:50,785 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/bin/uautomizer/data/e1615f1f2/7be484beec6f4d8cb16d7f6c6275ac37 [2019-12-07 16:44:50,787 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 16:44:50,788 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 16:44:50,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 16:44:50,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 16:44:50,791 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 16:44:50,792 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:44:50" (1/1) ... [2019-12-07 16:44:50,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a62463e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:44:50, skipping insertion in model container [2019-12-07 16:44:50,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:44:50" (1/1) ... [2019-12-07 16:44:50,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 16:44:50,818 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 16:44:50,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:44:50,988 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 16:44:51,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:44:51,023 INFO L208 MainTranslator]: Completed translation [2019-12-07 16:44:51,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:44:51 WrapperNode [2019-12-07 16:44:51,024 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 16:44:51,024 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 16:44:51,024 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 16:44:51,024 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 16:44:51,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:44:51" (1/1) ... [2019-12-07 16:44:51,034 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:44:51" (1/1) ... [2019-12-07 16:44:51,053 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 16:44:51,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 16:44:51,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 16:44:51,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 16:44:51,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:44:51" (1/1) ... [2019-12-07 16:44:51,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:44:51" (1/1) ... [2019-12-07 16:44:51,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:44:51" (1/1) ... [2019-12-07 16:44:51,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:44:51" (1/1) ... [2019-12-07 16:44:51,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:44:51" (1/1) ... [2019-12-07 16:44:51,071 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:44:51" (1/1) ... [2019-12-07 16:44:51,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:44:51" (1/1) ... [2019-12-07 16:44:51,075 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 16:44:51,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 16:44:51,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 16:44:51,075 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 16:44:51,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:44:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/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 [2019-12-07 16:44:51,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 16:44:51,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 16:44:51,356 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 16:44:51,356 INFO L287 CfgBuilder]: Removed 24 assume(true) statements. [2019-12-07 16:44:51,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:44:51 BoogieIcfgContainer [2019-12-07 16:44:51,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 16:44:51,357 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 16:44:51,357 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 16:44:51,360 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 16:44:51,361 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 16:44:51,361 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 04:44:50" (1/3) ... [2019-12-07 16:44:51,362 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@603e9090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 04:44:51, skipping insertion in model container [2019-12-07 16:44:51,362 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 16:44:51,362 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:44:51" (2/3) ... [2019-12-07 16:44:51,362 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@603e9090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 04:44:51, skipping insertion in model container [2019-12-07 16:44:51,362 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 16:44:51,363 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:44:51" (3/3) ... [2019-12-07 16:44:51,364 INFO L371 chiAutomizerObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2019-12-07 16:44:51,397 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 16:44:51,397 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 16:44:51,397 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 16:44:51,397 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 16:44:51,397 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 16:44:51,397 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 16:44:51,397 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 16:44:51,397 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 16:44:51,408 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 70 states. [2019-12-07 16:44:51,424 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2019-12-07 16:44:51,424 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 16:44:51,424 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 16:44:51,428 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-12-07 16:44:51,428 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 16:44:51,429 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 16:44:51,429 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 70 states. [2019-12-07 16:44:51,432 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2019-12-07 16:44:51,433 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 16:44:51,433 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 16:44:51,433 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-12-07 16:44:51,433 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 16:44:51,438 INFO L794 eck$LassoCheckResult]: Stem: 34#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 30#L19true assume !(0 == base2flt_~m % 4294967296); 17#L25true assume !(base2flt_~m % 4294967296 < 16777216); 13#L47-2true [2019-12-07 16:44:51,438 INFO L796 eck$LassoCheckResult]: Loop: 13#L47-2true assume !false; 22#L48true assume base2flt_~m % 4294967296 >= 33554432; 47#L49true assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 13#L47-2true [2019-12-07 16:44:51,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:44:51,442 INFO L82 PathProgramCache]: Analyzing trace with hash 30973, now seen corresponding path program 1 times [2019-12-07 16:44:51,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:44:51,448 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737007437] [2019-12-07 16:44:51,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:44:51,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:51,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:44:51,556 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737007437] [2019-12-07 16:44:51,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:44:51,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 16:44:51,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658593177] [2019-12-07 16:44:51,561 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 16:44:51,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:44:51,561 INFO L82 PathProgramCache]: Analyzing trace with hash 73619, now seen corresponding path program 1 times [2019-12-07 16:44:51,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:44:51,561 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822636467] [2019-12-07 16:44:51,561 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:44:51,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:44:51,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:44:51,588 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 16:44:51,617 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 16:44:51,617 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 16:44:51,617 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 16:44:51,617 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 16:44:51,618 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 16:44:51,618 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:51,618 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 16:44:51,618 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 16:44:51,618 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration1_Loop [2019-12-07 16:44:51,618 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 16:44:51,618 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 16:44:51,631 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:44:51,640 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:44:51,705 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 16:44:51,705 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:51,710 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 16:44:51,710 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 16:44:51,718 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 16:44:51,718 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=-1} Honda state: {ULTIMATE.start_base2flt_~m=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/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) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:51,722 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 16:44:51,722 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/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) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:51,728 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 16:44:51,728 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 16:44:51,734 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 16:44:51,735 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 16:44:51,735 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 16:44:51,735 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 16:44:51,735 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 16:44:51,735 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 16:44:51,735 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:51,735 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 16:44:51,735 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 16:44:51,735 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration1_Loop [2019-12-07 16:44:51,735 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 16:44:51,736 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 16:44:51,736 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:44:51,742 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:44:51,795 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 16:44:51,798 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/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 [2019-12-07 16:44:51,802 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 [2019-12-07 16:44:51,803 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 16:44:51,803 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 16:44:51,804 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 16:44:51,804 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 16:44:51,804 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 16:44:51,806 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 16:44:51,807 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 16:44:51,809 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:51,813 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 [2019-12-07 16:44:51,815 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 16:44:51,815 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 16:44:51,815 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 16:44:51,815 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 16:44:51,815 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 16:44:51,816 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 16:44:51,816 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 16:44:51,818 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 16:44:51,824 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 16:44:51,825 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/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) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:51,828 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 16:44:51,829 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 16:44:51,829 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 16:44:51,829 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2019-12-07 16:44:51,833 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 16:44:51,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:44:51,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:51,859 INFO L264 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 16:44:51,860 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:44:51,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:51,867 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 16:44:51,867 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:44:51,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:44:51,879 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 [2019-12-07 16:44:51,879 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 70 states. Second operand 3 states. [2019-12-07 16:44:51,930 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. [2019-12-07 16:44:51,931 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 [2019-12-07 16:44:51,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 16:44:51,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 227 transitions. [2019-12-07 16:44:51,934 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 3 letters. Loop has 3 letters. [2019-12-07 16:44:51,935 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 16:44:51,936 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 6 letters. Loop has 3 letters. [2019-12-07 16:44:51,936 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 16:44:51,936 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 3 letters. Loop has 6 letters. [2019-12-07 16:44:51,936 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 16:44:51,937 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 203 states and 343 transitions. [2019-12-07 16:44:51,943 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 39 [2019-12-07 16:44:51,947 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 203 states to 78 states and 119 transitions. [2019-12-07 16:44:51,948 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2019-12-07 16:44:51,949 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 75 [2019-12-07 16:44:51,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 119 transitions. [2019-12-07 16:44:51,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 16:44:51,949 INFO L688 BuchiCegarLoop]: Abstraction has 78 states and 119 transitions. [2019-12-07 16:44:51,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states and 119 transitions. [2019-12-07 16:44:51,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 67. [2019-12-07 16:44:51,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-12-07 16:44:51,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 107 transitions. [2019-12-07 16:44:51,972 INFO L711 BuchiCegarLoop]: Abstraction has 67 states and 107 transitions. [2019-12-07 16:44:51,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 16:44:51,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 16:44:51,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 16:44:51,975 INFO L87 Difference]: Start difference. First operand 67 states and 107 transitions. Second operand 3 states. [2019-12-07 16:44:52,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:44:52,012 INFO L93 Difference]: Finished difference Result 34 states and 47 transitions. [2019-12-07 16:44:52,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 16:44:52,013 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 47 transitions. [2019-12-07 16:44:52,014 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2019-12-07 16:44:52,015 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 34 states and 47 transitions. [2019-12-07 16:44:52,015 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2019-12-07 16:44:52,015 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2019-12-07 16:44:52,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 47 transitions. [2019-12-07 16:44:52,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 16:44:52,016 INFO L688 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2019-12-07 16:44:52,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 47 transitions. [2019-12-07 16:44:52,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-12-07 16:44:52,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-07 16:44:52,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2019-12-07 16:44:52,018 INFO L711 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2019-12-07 16:44:52,018 INFO L591 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2019-12-07 16:44:52,019 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 16:44:52,019 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 47 transitions. [2019-12-07 16:44:52,019 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2019-12-07 16:44:52,019 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 16:44:52,020 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 16:44:52,020 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-12-07 16:44:52,020 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 16:44:52,020 INFO L794 eck$LassoCheckResult]: Stem: 447#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~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 [2019-12-07 16:44:52,020 INFO L796 eck$LassoCheckResult]: Loop: 422#L47-5 assume !false; 425#L48-1 assume base2flt_~m % 4294967296 >= 33554432; 420#L49-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 422#L47-5 [2019-12-07 16:44:52,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:44:52,020 INFO L82 PathProgramCache]: Analyzing trace with hash 921737699, now seen corresponding path program 1 times [2019-12-07 16:44:52,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:44:52,021 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537454501] [2019-12-07 16:44:52,021 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:44:52,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:52,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:44:52,055 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537454501] [2019-12-07 16:44:52,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:44:52,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 16:44:52,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134693978] [2019-12-07 16:44:52,055 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 16:44:52,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:44:52,055 INFO L82 PathProgramCache]: Analyzing trace with hash 136178, now seen corresponding path program 1 times [2019-12-07 16:44:52,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:44:52,056 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54608676] [2019-12-07 16:44:52,056 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:44:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:44:52,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:44:52,066 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 16:44:52,083 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 16:44:52,083 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 16:44:52,083 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 16:44:52,083 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 16:44:52,083 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 16:44:52,083 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:52,083 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 16:44:52,084 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 16:44:52,084 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration2_Loop [2019-12-07 16:44:52,084 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 16:44:52,084 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 16:44:52,085 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:44:52,091 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:44:52,148 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 16:44:52,148 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/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 [2019-12-07 16:44:52,151 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 16:44:52,151 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 16:44:52,161 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 16:44:52,161 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=-1} Honda state: {ULTIMATE.start_base2flt_~m=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/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) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:52,165 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 16:44:52,165 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/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) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:52,171 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 16:44:52,172 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 16:44:52,177 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 16:44:52,178 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 16:44:52,178 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 16:44:52,178 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 16:44:52,178 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 16:44:52,178 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 16:44:52,179 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:52,179 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 16:44:52,179 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 16:44:52,179 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration2_Loop [2019-12-07 16:44:52,179 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 16:44:52,179 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 16:44:52,180 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:44:52,186 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:44:52,244 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 16:44:52,244 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:52,247 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 [2019-12-07 16:44:52,249 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 16:44:52,249 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 16:44:52,249 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 16:44:52,249 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 16:44:52,249 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 16:44:52,251 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 16:44:52,251 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 16:44:52,254 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:52,259 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 [2019-12-07 16:44:52,260 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 16:44:52,260 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 16:44:52,260 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 16:44:52,261 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 16:44:52,261 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 16:44:52,262 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 16:44:52,262 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 16:44:52,264 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 16:44:52,267 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 16:44:52,267 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/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 [2019-12-07 16:44:52,270 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 16:44:52,270 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 16:44:52,270 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 16:44:52,271 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2019-12-07 16:44:52,272 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 16:44:52,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:44:52,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:52,290 INFO L264 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 16:44:52,290 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:44:52,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:52,294 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 16:44:52,294 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:44:52,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:44:52,295 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 [2019-12-07 16:44:52,295 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 47 transitions. cyclomatic complexity: 19 Second operand 3 states. [2019-12-07 16:44:52,306 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. [2019-12-07 16:44:52,307 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 [2019-12-07 16:44:52,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 16:44:52,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2019-12-07 16:44:52,308 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 6 letters. Loop has 3 letters. [2019-12-07 16:44:52,308 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 16:44:52,308 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 9 letters. Loop has 3 letters. [2019-12-07 16:44:52,308 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 16:44:52,308 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 6 letters. Loop has 6 letters. [2019-12-07 16:44:52,309 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 16:44:52,309 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 84 transitions. [2019-12-07 16:44:52,310 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2019-12-07 16:44:52,311 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 59 states and 80 transitions. [2019-12-07 16:44:52,311 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 55 [2019-12-07 16:44:52,311 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 56 [2019-12-07 16:44:52,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 80 transitions. [2019-12-07 16:44:52,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 16:44:52,312 INFO L688 BuchiCegarLoop]: Abstraction has 59 states and 80 transitions. [2019-12-07 16:44:52,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states and 80 transitions. [2019-12-07 16:44:52,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 37. [2019-12-07 16:44:52,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-12-07 16:44:52,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2019-12-07 16:44:52,315 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 51 transitions. [2019-12-07 16:44:52,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 16:44:52,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 16:44:52,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 16:44:52,316 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand 3 states. [2019-12-07 16:44:52,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:44:52,349 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2019-12-07 16:44:52,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 16:44:52,350 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 46 transitions. [2019-12-07 16:44:52,350 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2019-12-07 16:44:52,351 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 46 transitions. [2019-12-07 16:44:52,351 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2019-12-07 16:44:52,351 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2019-12-07 16:44:52,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 46 transitions. [2019-12-07 16:44:52,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 16:44:52,352 INFO L688 BuchiCegarLoop]: Abstraction has 35 states and 46 transitions. [2019-12-07 16:44:52,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 46 transitions. [2019-12-07 16:44:52,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2019-12-07 16:44:52,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-07 16:44:52,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2019-12-07 16:44:52,355 INFO L711 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2019-12-07 16:44:52,355 INFO L591 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2019-12-07 16:44:52,355 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 16:44:52,355 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 41 transitions. [2019-12-07 16:44:52,355 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2019-12-07 16:44:52,356 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 16:44:52,356 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 16:44:52,356 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-12-07 16:44:52,356 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 16:44:52,356 INFO L794 eck$LassoCheckResult]: Stem: 658#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 655#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 632#L69 base2flt_#res := base2flt_~__retres4~0; 633#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 652#L19-1 assume !(0 == base2flt_~m % 4294967296); 640#L25-1 assume base2flt_~m % 4294967296 < 16777216; 641#L37-3 [2019-12-07 16:44:52,357 INFO L796 eck$LassoCheckResult]: Loop: 641#L37-3 assume !false; 650#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 651#L37-2 assume base2flt_~m % 4294967296 < 16777216; 641#L37-3 [2019-12-07 16:44:52,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:44:52,357 INFO L82 PathProgramCache]: Analyzing trace with hash 921737673, now seen corresponding path program 1 times [2019-12-07 16:44:52,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:44:52,357 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374781535] [2019-12-07 16:44:52,357 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:44:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:44:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:44:52,374 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 16:44:52,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:44:52,374 INFO L82 PathProgramCache]: Analyzing trace with hash 110419, now seen corresponding path program 1 times [2019-12-07 16:44:52,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:44:52,375 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039491253] [2019-12-07 16:44:52,375 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:44:52,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:44:52,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:44:52,381 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 16:44:52,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:44:52,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1761173643, now seen corresponding path program 1 times [2019-12-07 16:44:52,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:44:52,382 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385372845] [2019-12-07 16:44:52,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:44:52,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:44:52,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:44:52,401 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 16:44:52,415 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 16:44:52,415 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 16:44:52,416 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 16:44:52,416 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 16:44:52,416 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 16:44:52,416 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:52,416 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 16:44:52,416 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 16:44:52,416 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration3_Loop [2019-12-07 16:44:52,416 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 16:44:52,416 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 16:44:52,417 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:44:52,421 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:44:52,471 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 16:44:52,472 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:52,474 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 16:44:52,475 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 16:44:52,479 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 16:44:52,479 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=0} Honda state: {ULTIMATE.start_base2flt_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:52,483 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 16:44:52,484 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/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 [2019-12-07 16:44:52,499 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 16:44:52,499 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 16:44:52,505 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 16:44:52,506 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 16:44:52,506 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 16:44:52,506 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 16:44:52,506 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 16:44:52,506 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 16:44:52,506 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:52,507 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 16:44:52,507 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 16:44:52,507 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration3_Loop [2019-12-07 16:44:52,507 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 16:44:52,507 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 16:44:52,509 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:44:52,514 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:44:52,550 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 16:44:52,551 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/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 [2019-12-07 16:44:52,554 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 [2019-12-07 16:44:52,555 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 16:44:52,555 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 16:44:52,555 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 16:44:52,555 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 16:44:52,555 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 16:44:52,556 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 16:44:52,556 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 16:44:52,558 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:52,562 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 [2019-12-07 16:44:52,563 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 16:44:52,564 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 16:44:52,564 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 16:44:52,564 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 16:44:52,564 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 16:44:52,565 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 16:44:52,565 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 16:44:52,567 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 16:44:52,569 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 16:44:52,569 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:52,571 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 16:44:52,572 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 16:44:52,572 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 16:44:52,572 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2019-12-07 16:44:52,573 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 16:44:52,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:44:52,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:52,589 INFO L264 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 16:44:52,589 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:44:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:52,592 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 16:44:52,592 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:44:52,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:44:52,605 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 [2019-12-07 16:44:52,605 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 41 transitions. cyclomatic complexity: 15 Second operand 4 states. [2019-12-07 16:44:52,612 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. [2019-12-07 16:44:52,613 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 [2019-12-07 16:44:52,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 16:44:52,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2019-12-07 16:44:52,613 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 6 letters. Loop has 3 letters. [2019-12-07 16:44:52,613 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 16:44:52,613 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 3 letters. [2019-12-07 16:44:52,614 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 16:44:52,614 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 6 letters. Loop has 6 letters. [2019-12-07 16:44:52,614 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 16:44:52,614 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 59 states and 78 transitions. [2019-12-07 16:44:52,615 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2019-12-07 16:44:52,615 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 59 states to 56 states and 74 transitions. [2019-12-07 16:44:52,615 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 50 [2019-12-07 16:44:52,615 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2019-12-07 16:44:52,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 74 transitions. [2019-12-07 16:44:52,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 16:44:52,616 INFO L688 BuchiCegarLoop]: Abstraction has 56 states and 74 transitions. [2019-12-07 16:44:52,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 74 transitions. [2019-12-07 16:44:52,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 34. [2019-12-07 16:44:52,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-07 16:44:52,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2019-12-07 16:44:52,617 INFO L711 BuchiCegarLoop]: Abstraction has 34 states and 45 transitions. [2019-12-07 16:44:52,617 INFO L591 BuchiCegarLoop]: Abstraction has 34 states and 45 transitions. [2019-12-07 16:44:52,618 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 16:44:52,618 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 45 transitions. [2019-12-07 16:44:52,618 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2019-12-07 16:44:52,618 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 16:44:52,618 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 16:44:52,618 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:44:52,618 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 16:44:52,618 INFO L794 eck$LassoCheckResult]: Stem: 797#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~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 [2019-12-07 16:44:52,619 INFO L796 eck$LassoCheckResult]: Loop: 769#L47-8 assume !false; 792#L48-2 assume base2flt_~m % 4294967296 >= 33554432; 767#L49-2 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 769#L47-8 [2019-12-07 16:44:52,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:44:52,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1760951196, now seen corresponding path program 1 times [2019-12-07 16:44:52,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:44:52,619 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081928285] [2019-12-07 16:44:52,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:44:52,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:52,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:44:52,644 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081928285] [2019-12-07 16:44:52,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:44:52,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 16:44:52,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976299507] [2019-12-07 16:44:52,644 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 16:44:52,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:44:52,645 INFO L82 PathProgramCache]: Analyzing trace with hash 198737, now seen corresponding path program 1 times [2019-12-07 16:44:52,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:44:52,645 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704548870] [2019-12-07 16:44:52,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:44:52,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:44:52,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:44:52,651 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 16:44:52,663 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 16:44:52,663 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 16:44:52,664 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 16:44:52,664 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 16:44:52,664 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 16:44:52,664 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:52,664 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 16:44:52,664 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 16:44:52,664 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration4_Loop [2019-12-07 16:44:52,664 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 16:44:52,664 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 16:44:52,665 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:44:52,668 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:44:52,715 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 16:44:52,715 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/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 [2019-12-07 16:44:52,718 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 16:44:52,718 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:52,724 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 16:44:52,724 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 16:44:52,730 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 16:44:52,732 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 16:44:52,732 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 16:44:52,732 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 16:44:52,732 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 16:44:52,732 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 16:44:52,732 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:52,732 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 16:44:52,732 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 16:44:52,732 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration4_Loop [2019-12-07 16:44:52,732 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 16:44:52,732 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 16:44:52,733 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:44:52,736 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:44:52,780 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 16:44:52,780 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:52,782 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 [2019-12-07 16:44:52,783 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 16:44:52,783 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 16:44:52,784 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 16:44:52,784 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 16:44:52,784 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 16:44:52,785 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 16:44:52,785 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 16:44:52,786 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 16:44:52,788 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 16:44:52,788 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:52,793 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 16:44:52,793 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 16:44:52,793 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 16:44:52,793 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2019-12-07 16:44:52,795 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 16:44:52,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:44:52,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:52,810 INFO L264 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 16:44:52,811 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:44:52,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:52,813 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 16:44:52,813 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:44:52,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:44:52,814 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 [2019-12-07 16:44:52,814 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 45 transitions. cyclomatic complexity: 16 Second operand 3 states. [2019-12-07 16:44:52,824 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. [2019-12-07 16:44:52,825 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 [2019-12-07 16:44:52,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 16:44:52,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2019-12-07 16:44:52,825 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 3 letters. [2019-12-07 16:44:52,825 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 16:44:52,825 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 3 letters. [2019-12-07 16:44:52,825 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 16:44:52,825 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 6 letters. [2019-12-07 16:44:52,826 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 16:44:52,826 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 65 transitions. [2019-12-07 16:44:52,826 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2019-12-07 16:44:52,827 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 48 states and 61 transitions. [2019-12-07 16:44:52,827 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2019-12-07 16:44:52,827 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2019-12-07 16:44:52,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 61 transitions. [2019-12-07 16:44:52,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 16:44:52,828 INFO L688 BuchiCegarLoop]: Abstraction has 48 states and 61 transitions. [2019-12-07 16:44:52,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 61 transitions. [2019-12-07 16:44:52,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 37. [2019-12-07 16:44:52,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-12-07 16:44:52,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2019-12-07 16:44:52,830 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 49 transitions. [2019-12-07 16:44:52,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 16:44:52,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 16:44:52,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 16:44:52,831 INFO L87 Difference]: Start difference. First operand 37 states and 49 transitions. Second operand 3 states. [2019-12-07 16:44:52,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:44:52,855 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2019-12-07 16:44:52,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 16:44:52,856 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 52 transitions. [2019-12-07 16:44:52,856 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2019-12-07 16:44:52,856 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 41 states and 52 transitions. [2019-12-07 16:44:52,857 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2019-12-07 16:44:52,857 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2019-12-07 16:44:52,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 52 transitions. [2019-12-07 16:44:52,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 16:44:52,857 INFO L688 BuchiCegarLoop]: Abstraction has 41 states and 52 transitions. [2019-12-07 16:44:52,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 52 transitions. [2019-12-07 16:44:52,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2019-12-07 16:44:52,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-12-07 16:44:52,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2019-12-07 16:44:52,859 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2019-12-07 16:44:52,859 INFO L591 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2019-12-07 16:44:52,859 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-12-07 16:44:52,859 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 37 states and 48 transitions. [2019-12-07 16:44:52,859 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2019-12-07 16:44:52,859 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 16:44:52,859 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 16:44:52,859 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:44:52,859 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 16:44:52,860 INFO L794 eck$LassoCheckResult]: Stem: 1018#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~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 [2019-12-07 16:44:52,860 INFO L796 eck$LassoCheckResult]: Loop: 997#L37-5 assume !false; 1004#L28-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1005#L37-4 assume base2flt_~m % 4294967296 < 16777216; 997#L37-5 [2019-12-07 16:44:52,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:44:52,860 INFO L82 PathProgramCache]: Analyzing trace with hash -197167406, now seen corresponding path program 1 times [2019-12-07 16:44:52,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:44:52,860 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976172587] [2019-12-07 16:44:52,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:44:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:52,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:44:52,878 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976172587] [2019-12-07 16:44:52,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:44:52,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 16:44:52,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231709605] [2019-12-07 16:44:52,879 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 16:44:52,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:44:52,879 INFO L82 PathProgramCache]: Analyzing trace with hash 172978, now seen corresponding path program 1 times [2019-12-07 16:44:52,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:44:52,879 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535134054] [2019-12-07 16:44:52,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:44:52,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:44:52,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:44:52,883 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 16:44:52,896 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 16:44:52,897 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 16:44:52,897 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 16:44:52,897 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 16:44:52,897 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 16:44:52,897 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:52,897 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 16:44:52,897 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 16:44:52,897 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration5_Loop [2019-12-07 16:44:52,897 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 16:44:52,897 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 16:44:52,898 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:44:52,902 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:44:52,938 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 16:44:52,938 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:52,941 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 16:44:52,941 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 16:44:52,945 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 16:44:52,945 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=0} Honda state: {ULTIMATE.start_base2flt_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:52,950 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 16:44:52,950 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:52,957 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 16:44:52,957 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 16:44:52,961 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 16:44:52,963 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 16:44:52,963 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 16:44:52,963 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 16:44:52,963 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 16:44:52,963 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 16:44:52,963 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:52,963 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 16:44:52,963 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 16:44:52,963 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration5_Loop [2019-12-07 16:44:52,963 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 16:44:52,963 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 16:44:52,964 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:44:52,968 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:44:53,003 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 16:44:53,003 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:53,005 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 [2019-12-07 16:44:53,006 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 16:44:53,007 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 16:44:53,007 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 16:44:53,007 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 16:44:53,007 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 16:44:53,008 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 16:44:53,008 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 16:44:53,009 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:53,014 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 [2019-12-07 16:44:53,015 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 16:44:53,015 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 16:44:53,015 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 16:44:53,015 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 16:44:53,015 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 16:44:53,015 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 16:44:53,016 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 16:44:53,017 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 16:44:53,019 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 16:44:53,019 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:53,022 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 16:44:53,022 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 16:44:53,022 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 16:44:53,022 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2019-12-07 16:44:53,023 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 16:44:53,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:44:53,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:53,038 INFO L264 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 16:44:53,039 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:44:53,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:53,042 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 16:44:53,042 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:44:53,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:44:53,050 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 [2019-12-07 16:44:53,050 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 48 transitions. cyclomatic complexity: 16 Second operand 4 states. [2019-12-07 16:44:53,056 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. [2019-12-07 16:44:53,057 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 [2019-12-07 16:44:53,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 16:44:53,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2019-12-07 16:44:53,057 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 3 letters. [2019-12-07 16:44:53,058 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 16:44:53,058 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 15 letters. Loop has 3 letters. [2019-12-07 16:44:53,058 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 16:44:53,058 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 6 letters. [2019-12-07 16:44:53,058 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 16:44:53,058 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 55 states and 69 transitions. [2019-12-07 16:44:53,059 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2019-12-07 16:44:53,059 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 55 states to 52 states and 65 transitions. [2019-12-07 16:44:53,059 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2019-12-07 16:44:53,060 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2019-12-07 16:44:53,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 65 transitions. [2019-12-07 16:44:53,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 16:44:53,060 INFO L688 BuchiCegarLoop]: Abstraction has 52 states and 65 transitions. [2019-12-07 16:44:53,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 65 transitions. [2019-12-07 16:44:53,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2019-12-07 16:44:53,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-12-07 16:44:53,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 52 transitions. [2019-12-07 16:44:53,062 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 52 transitions. [2019-12-07 16:44:53,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 16:44:53,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 16:44:53,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 16:44:53,063 INFO L87 Difference]: Start difference. First operand 40 states and 52 transitions. Second operand 4 states. [2019-12-07 16:44:53,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:44:53,097 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2019-12-07 16:44:53,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 16:44:53,097 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 55 transitions. [2019-12-07 16:44:53,098 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-12-07 16:44:53,098 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 43 states and 54 transitions. [2019-12-07 16:44:53,098 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2019-12-07 16:44:53,098 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2019-12-07 16:44:53,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 54 transitions. [2019-12-07 16:44:53,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 16:44:53,098 INFO L688 BuchiCegarLoop]: Abstraction has 43 states and 54 transitions. [2019-12-07 16:44:53,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 54 transitions. [2019-12-07 16:44:53,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2019-12-07 16:44:53,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-12-07 16:44:53,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2019-12-07 16:44:53,100 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2019-12-07 16:44:53,100 INFO L591 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2019-12-07 16:44:53,100 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-12-07 16:44:53,101 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 51 transitions. [2019-12-07 16:44:53,101 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-12-07 16:44:53,101 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 16:44:53,101 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 16:44:53,101 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:44:53,101 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 16:44:53,102 INFO L794 eck$LassoCheckResult]: Stem: 1266#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~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 [2019-12-07 16:44:53,102 INFO L796 eck$LassoCheckResult]: Loop: 1239#L47-11 assume !false; 1268#L48-3 assume base2flt_~m % 4294967296 >= 33554432; 1246#L49-3 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 1239#L47-11 [2019-12-07 16:44:53,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:44:53,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1360904017, now seen corresponding path program 1 times [2019-12-07 16:44:53,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:44:53,102 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219605304] [2019-12-07 16:44:53,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:44:53,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:53,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:44:53,140 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219605304] [2019-12-07 16:44:53,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:44:53,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 16:44:53,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451460838] [2019-12-07 16:44:53,141 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 16:44:53,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:44:53,141 INFO L82 PathProgramCache]: Analyzing trace with hash 261296, now seen corresponding path program 1 times [2019-12-07 16:44:53,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:44:53,142 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719893107] [2019-12-07 16:44:53,142 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:44:53,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:44:53,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:44:53,149 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 16:44:53,162 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 16:44:53,162 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 16:44:53,162 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 16:44:53,162 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 16:44:53,162 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 16:44:53,162 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:53,162 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 16:44:53,162 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 16:44:53,162 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration6_Loop [2019-12-07 16:44:53,163 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 16:44:53,163 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 16:44:53,163 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:44:53,167 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:44:53,222 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 16:44:53,222 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:53,225 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 16:44:53,225 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:53,232 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 16:44:53,232 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 16:44:53,238 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 16:44:53,239 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 16:44:53,239 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 16:44:53,239 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 16:44:53,239 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 16:44:53,239 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 16:44:53,239 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:53,239 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 16:44:53,239 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 16:44:53,239 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration6_Loop [2019-12-07 16:44:53,240 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 16:44:53,240 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 16:44:53,240 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:44:53,244 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:44:53,292 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 16:44:53,292 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:53,294 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 [2019-12-07 16:44:53,295 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 16:44:53,296 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 16:44:53,296 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 16:44:53,296 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 16:44:53,296 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 16:44:53,297 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 16:44:53,297 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 16:44:53,298 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 16:44:53,300 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 16:44:53,301 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:53,303 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 16:44:53,303 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 16:44:53,304 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 16:44:53,304 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2019-12-07 16:44:53,305 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 16:44:53,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:44:53,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:53,328 INFO L264 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 16:44:53,329 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:44:53,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:53,332 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 16:44:53,332 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:44:53,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:44:53,333 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 [2019-12-07 16:44:53,333 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 51 transitions. cyclomatic complexity: 16 Second operand 3 states. [2019-12-07 16:44:53,336 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. [2019-12-07 16:44:53,336 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 [2019-12-07 16:44:53,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 16:44:53,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2019-12-07 16:44:53,337 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 17 letters. Loop has 3 letters. [2019-12-07 16:44:53,337 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 16:44:53,337 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 20 letters. Loop has 3 letters. [2019-12-07 16:44:53,337 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 16:44:53,338 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 17 letters. Loop has 6 letters. [2019-12-07 16:44:53,338 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 16:44:53,338 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 55 transitions. [2019-12-07 16:44:53,338 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 16:44:53,339 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 37 states and 47 transitions. [2019-12-07 16:44:53,339 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2019-12-07 16:44:53,339 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2019-12-07 16:44:53,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 47 transitions. [2019-12-07 16:44:53,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 16:44:53,340 INFO L688 BuchiCegarLoop]: Abstraction has 37 states and 47 transitions. [2019-12-07 16:44:53,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 47 transitions. [2019-12-07 16:44:53,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-12-07 16:44:53,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-12-07 16:44:53,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2019-12-07 16:44:53,342 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 47 transitions. [2019-12-07 16:44:53,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 16:44:53,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 16:44:53,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 16:44:53,342 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand 4 states. [2019-12-07 16:44:53,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:44:53,378 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2019-12-07 16:44:53,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 16:44:53,379 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 56 transitions. [2019-12-07 16:44:53,379 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 16:44:53,380 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 45 states and 56 transitions. [2019-12-07 16:44:53,380 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2019-12-07 16:44:53,380 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2019-12-07 16:44:53,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 56 transitions. [2019-12-07 16:44:53,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 16:44:53,380 INFO L688 BuchiCegarLoop]: Abstraction has 45 states and 56 transitions. [2019-12-07 16:44:53,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 56 transitions. [2019-12-07 16:44:53,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2019-12-07 16:44:53,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-12-07 16:44:53,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2019-12-07 16:44:53,381 INFO L711 BuchiCegarLoop]: Abstraction has 39 states and 50 transitions. [2019-12-07 16:44:53,381 INFO L591 BuchiCegarLoop]: Abstraction has 39 states and 50 transitions. [2019-12-07 16:44:53,381 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-12-07 16:44:53,382 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 50 transitions. [2019-12-07 16:44:53,382 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 16:44:53,382 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 16:44:53,382 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 16:44:53,382 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:44:53,382 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 16:44:53,383 INFO L794 eck$LassoCheckResult]: Stem: 1506#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~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 [2019-12-07 16:44:53,383 INFO L796 eck$LassoCheckResult]: Loop: 1480#L37-7 assume !false; 1481#L28-3 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1505#L37-6 assume base2flt_~m % 4294967296 < 16777216; 1480#L37-7 [2019-12-07 16:44:53,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:44:53,383 INFO L82 PathProgramCache]: Analyzing trace with hash -377438794, now seen corresponding path program 1 times [2019-12-07 16:44:53,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:44:53,383 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649221665] [2019-12-07 16:44:53,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:44:53,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:53,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:44:53,407 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649221665] [2019-12-07 16:44:53,407 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400337548] [2019-12-07 16:44:53,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/bin/uautomizer/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 16:44:53,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:53,433 INFO L264 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 16:44:53,434 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:44:53,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:44:53,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 16:44:53,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2019-12-07 16:44:53,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414429701] [2019-12-07 16:44:53,438 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 16:44:53,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:44:53,438 INFO L82 PathProgramCache]: Analyzing trace with hash 235537, now seen corresponding path program 1 times [2019-12-07 16:44:53,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:44:53,438 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843322894] [2019-12-07 16:44:53,438 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:44:53,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:44:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:44:53,442 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 16:44:53,455 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 16:44:53,456 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 16:44:53,456 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 16:44:53,456 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 16:44:53,456 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 16:44:53,456 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:53,456 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 16:44:53,456 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 16:44:53,456 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration7_Loop [2019-12-07 16:44:53,456 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 16:44:53,456 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 16:44:53,457 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:44:53,460 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:44:53,497 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 16:44:53,497 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/bin/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:53,509 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 16:44:53,510 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 16:44:53,515 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 16:44:53,515 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=0} Honda state: {ULTIMATE.start_base2flt_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:53,518 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 16:44:53,518 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:53,524 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 16:44:53,524 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 16:44:53,529 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 16:44:53,530 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 16:44:53,530 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 16:44:53,530 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 16:44:53,530 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 16:44:53,530 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 16:44:53,530 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:53,530 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 16:44:53,530 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 16:44:53,530 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration7_Loop [2019-12-07 16:44:53,530 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 16:44:53,530 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 16:44:53,531 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:44:53,535 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:44:53,571 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 16:44:53,571 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/bin/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:53,574 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 [2019-12-07 16:44:53,575 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 16:44:53,575 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 16:44:53,576 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 16:44:53,576 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 16:44:53,576 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 16:44:53,576 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 16:44:53,577 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 16:44:53,578 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/bin/uautomizer/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:53,582 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 [2019-12-07 16:44:53,583 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 16:44:53,584 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 16:44:53,584 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 16:44:53,584 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 16:44:53,584 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 16:44:53,585 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 16:44:53,585 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 16:44:53,587 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 16:44:53,590 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 16:44:53,590 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ad07b74-1797-4655-a633-284811e3cade/bin/uautomizer/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:44:53,592 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 16:44:53,592 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 16:44:53,592 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 16:44:53,592 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2019-12-07 16:44:53,594 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 16:44:53,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:44:53,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:53,610 INFO L264 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 16:44:53,611 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:44:53,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:53,613 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 16:44:53,614 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:44:53,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:44:53,622 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 [2019-12-07 16:44:53,622 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 50 transitions. cyclomatic complexity: 15 Second operand 4 states. [2019-12-07 16:44:53,625 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. [2019-12-07 16:44:53,625 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 [2019-12-07 16:44:53,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 16:44:53,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2019-12-07 16:44:53,626 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 18 letters. Loop has 3 letters. [2019-12-07 16:44:53,626 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 16:44:53,626 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 21 letters. Loop has 3 letters. [2019-12-07 16:44:53,626 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 16:44:53,626 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 18 letters. Loop has 6 letters. [2019-12-07 16:44:53,626 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 16:44:53,626 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 54 transitions. [2019-12-07 16:44:53,627 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 16:44:53,627 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 0 states and 0 transitions. [2019-12-07 16:44:53,627 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 16:44:53,627 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 16:44:53,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 16:44:53,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 16:44:53,627 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 16:44:53,627 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 16:44:53,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 16:44:53,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 16:44:53,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 16:44:53,627 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2019-12-07 16:44:53,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:44:53,627 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-12-07 16:44:53,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 16:44:53,628 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-12-07 16:44:53,628 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 16:44:53,628 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 16:44:53,628 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 16:44:53,628 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 16:44:53,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 16:44:53,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 16:44:53,628 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 16:44:53,628 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 16:44:53,628 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 16:44:53,628 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-12-07 16:44:53,628 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 16:44:53,628 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 16:44:53,628 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 16:44:53,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 04:44:53 BoogieIcfgContainer [2019-12-07 16:44:53,632 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 16:44:53,633 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 16:44:53,633 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 16:44:53,633 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 16:44:53,633 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:44:51" (3/4) ... [2019-12-07 16:44:53,635 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 16:44:53,635 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 16:44:53,636 INFO L168 Benchmark]: Toolchain (without parser) took 2848.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -146.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:44:53,637 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:44:53,637 INFO L168 Benchmark]: CACSL2BoogieTranslator took 235.11 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 71.3 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -120.2 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-12-07 16:44:53,637 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.67 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 16:44:53,638 INFO L168 Benchmark]: Boogie Preprocessor took 22.11 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:44:53,638 INFO L168 Benchmark]: RCFGBuilder took 281.83 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. [2019-12-07 16:44:53,638 INFO L168 Benchmark]: BuchiAutomizer took 2275.04 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 72.4 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -70.4 MB). Peak memory consumption was 1.9 MB. Max. memory is 11.5 GB. [2019-12-07 16:44:53,639 INFO L168 Benchmark]: Witness Printer took 2.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 11.5 GB. [2019-12-07 16:44:53,641 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 235.11 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 71.3 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -120.2 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.67 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.11 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 281.83 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2275.04 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 72.4 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -70.4 MB). Peak memory consumption was 1.9 MB. Max. memory is 11.5 GB. * Witness Printer took 2.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.7 MB). Peak memory consumption was 5.7 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 2.2s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 1.6s. Construction of modules took 0.1s. Büchi inclusion checks took 0.3s. 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, 0.1s 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: 10ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...