./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 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7e1b4e42babcfba0789bfa7cb90840c832d315a4 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-19 23:05:20,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 23:05:20,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 23:05:20,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 23:05:20,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 23:05:20,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 23:05:20,084 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 23:05:20,087 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 23:05:20,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 23:05:20,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 23:05:20,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 23:05:20,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 23:05:20,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 23:05:20,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 23:05:20,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 23:05:20,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 23:05:20,099 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 23:05:20,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 23:05:20,103 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 23:05:20,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 23:05:20,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 23:05:20,109 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 23:05:20,111 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 23:05:20,112 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 23:05:20,115 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 23:05:20,116 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 23:05:20,116 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 23:05:20,123 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 23:05:20,123 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 23:05:20,126 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 23:05:20,126 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 23:05:20,130 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 23:05:20,131 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 23:05:20,132 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 23:05:20,136 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 23:05:20,136 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 23:05:20,137 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 23:05:20,137 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 23:05:20,138 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 23:05:20,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 23:05:20,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 23:05:20,146 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-19 23:05:20,173 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 23:05:20,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 23:05:20,176 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 23:05:20,176 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 23:05:20,176 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 23:05:20,177 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-19 23:05:20,177 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-19 23:05:20,177 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-19 23:05:20,177 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-19 23:05:20,178 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-19 23:05:20,179 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-19 23:05:20,179 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 23:05:20,179 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 23:05:20,180 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-19 23:05:20,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 23:05:20,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 23:05:20,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 23:05:20,180 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-19 23:05:20,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-19 23:05:20,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-19 23:05:20,181 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 23:05:20,181 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 23:05:20,182 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-19 23:05:20,182 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 23:05:20,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-19 23:05:20,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 23:05:20,183 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 23:05:20,183 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-19 23:05:20,183 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 23:05:20,183 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 23:05:20,184 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-19 23:05:20,185 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-19 23:05:20,185 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_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/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 [2019-11-19 23:05:20,393 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 23:05:20,408 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 23:05:20,412 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 23:05:20,414 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 23:05:20,415 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 23:05:20,416 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/bin/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2019-11-19 23:05:20,502 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/bin/uautomizer/data/8f5366c0e/e8f4b2b7afdc4e5398de27bb66815901/FLAGe4fb09791 [2019-11-19 23:05:21,050 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 23:05:21,051 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2019-11-19 23:05:21,060 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/bin/uautomizer/data/8f5366c0e/e8f4b2b7afdc4e5398de27bb66815901/FLAGe4fb09791 [2019-11-19 23:05:21,376 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/bin/uautomizer/data/8f5366c0e/e8f4b2b7afdc4e5398de27bb66815901 [2019-11-19 23:05:21,381 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 23:05:21,383 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 23:05:21,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 23:05:21,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 23:05:21,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 23:05:21,398 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:05:21" (1/1) ... [2019-11-19 23:05:21,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4346de15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:05:21, skipping insertion in model container [2019-11-19 23:05:21,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:05:21" (1/1) ... [2019-11-19 23:05:21,412 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 23:05:21,467 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 23:05:21,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 23:05:21,817 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 23:05:21,880 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 23:05:21,902 INFO L192 MainTranslator]: Completed translation [2019-11-19 23:05:21,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:05:21 WrapperNode [2019-11-19 23:05:21,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 23:05:21,904 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 23:05:21,905 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 23:05:21,905 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 23:05:21,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:05:21" (1/1) ... [2019-11-19 23:05:21,923 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:05:21" (1/1) ... [2019-11-19 23:05:21,963 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 23:05:21,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 23:05:21,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 23:05:21,964 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 23:05:21,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:05:21" (1/1) ... [2019-11-19 23:05:21,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:05:21" (1/1) ... [2019-11-19 23:05:21,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:05:21" (1/1) ... [2019-11-19 23:05:21,980 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:05:21" (1/1) ... [2019-11-19 23:05:21,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:05:21" (1/1) ... [2019-11-19 23:05:21,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:05:21" (1/1) ... [2019-11-19 23:05:22,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:05:21" (1/1) ... [2019-11-19 23:05:22,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 23:05:22,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 23:05:22,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 23:05:22,008 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 23:05:22,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:05:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:05:22,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 23:05:22,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 23:05:22,740 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 23:05:22,740 INFO L285 CfgBuilder]: Removed 24 assume(true) statements. [2019-11-19 23:05:22,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:05:22 BoogieIcfgContainer [2019-11-19 23:05:22,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 23:05:22,743 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-19 23:05:22,743 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-19 23:05:22,747 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-19 23:05:22,748 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 23:05:22,748 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.11 11:05:21" (1/3) ... [2019-11-19 23:05:22,749 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@65af7a39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 11:05:22, skipping insertion in model container [2019-11-19 23:05:22,749 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 23:05:22,749 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:05:21" (2/3) ... [2019-11-19 23:05:22,750 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@65af7a39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 11:05:22, skipping insertion in model container [2019-11-19 23:05:22,750 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 23:05:22,750 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:05:22" (3/3) ... [2019-11-19 23:05:22,753 INFO L371 chiAutomizerObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2019-11-19 23:05:22,811 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-19 23:05:22,811 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-19 23:05:22,811 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-19 23:05:22,811 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 23:05:22,811 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 23:05:22,812 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-19 23:05:22,812 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 23:05:22,812 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-19 23:05:22,835 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 70 states. [2019-11-19 23:05:22,867 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2019-11-19 23:05:22,867 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 23:05:22,867 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 23:05:22,876 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-19 23:05:22,877 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-19 23:05:22,877 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-19 23:05:22,877 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 70 states. [2019-11-19 23:05:22,885 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2019-11-19 23:05:22,885 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 23:05:22,885 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 23:05:22,886 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-19 23:05:22,886 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-19 23:05:22,894 INFO L794 eck$LassoCheckResult]: Stem: 34#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 30#L19true assume !(0 == base2flt_~m % 4294967296); 17#L25true assume !(base2flt_~m % 4294967296 < 16777216); 13#L47-2true [2019-11-19 23:05:22,895 INFO L796 eck$LassoCheckResult]: Loop: 13#L47-2true assume !false; 22#L48true assume base2flt_~m % 4294967296 >= 33554432; 47#L49true assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 13#L47-2true [2019-11-19 23:05:22,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:05:22,902 INFO L82 PathProgramCache]: Analyzing trace with hash 30973, now seen corresponding path program 1 times [2019-11-19 23:05:22,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:05:22,914 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613254369] [2019-11-19 23:05:22,915 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:05:23,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:05:23,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:05:23,114 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613254369] [2019-11-19 23:05:23,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:05:23,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-19 23:05:23,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783365350] [2019-11-19 23:05:23,124 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-19 23:05:23,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:05:23,125 INFO L82 PathProgramCache]: Analyzing trace with hash 73619, now seen corresponding path program 1 times [2019-11-19 23:05:23,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:05:23,125 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134021809] [2019-11-19 23:05:23,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:05:23,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:05:23,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:05:23,204 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:05:23,277 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 23:05:23,279 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 23:05:23,279 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 23:05:23,279 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 23:05:23,279 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 23:05:23,280 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:05:23,280 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 23:05:23,280 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 23:05:23,280 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration1_Loop [2019-11-19 23:05:23,281 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 23:05:23,282 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 23:05:23,314 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:05:23,346 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:05:23,508 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2019-11-19 23:05:23,598 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 23:05:23,599 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 23:05:23,614 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 23:05:23,614 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:05:23,632 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 23:05:23,633 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: [] [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/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 [2019-11-19 23:05:23,641 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 23:05:23,642 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/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 [2019-11-19 23:05:23,657 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 23:05:23,657 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 23:05:23,670 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 23:05:23,673 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 23:05:23,674 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 23:05:23,674 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 23:05:23,674 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 23:05:23,674 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 23:05:23,674 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:05:23,674 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 23:05:23,675 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 23:05:23,675 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration1_Loop [2019-11-19 23:05:23,675 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 23:05:23,675 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 23:05:23,677 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:05:23,690 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:05:23,839 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 23:05:23,844 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/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 [2019-11-19 23:05:23,853 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:05:23,857 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:05:23,857 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:05:23,858 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:05:23,858 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:05:23,858 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:05:23,867 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:05:23,868 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 23:05:23,880 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 23:05:23,902 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 Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:05:23,905 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:05:23,905 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:05:23,906 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:05:23,906 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:05:23,906 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:05:23,908 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:05:23,908 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 23:05:23,912 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 23:05:23,937 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-19 23:05:23,937 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_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/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 [2019-11-19 23:05:23,949 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 23:05:23,953 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 23:05:23,953 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 23:05:23,954 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2019-11-19 23:05:23,969 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-19 23:05:24,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:05:24,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:05:24,028 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 23:05:24,030 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:05:24,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:05:24,047 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 23:05:24,048 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:05:24,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:05:24,080 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-19 23:05:24,082 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 70 states. Second operand 3 states. [2019-11-19 23:05:24,213 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 70 states.. Second operand 3 states. Result 203 states and 343 transitions. Complement of second has 6 states. [2019-11-19 23:05:24,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-19 23:05:24,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-19 23:05:24,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 227 transitions. [2019-11-19 23:05:24,222 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 3 letters. Loop has 3 letters. [2019-11-19 23:05:24,223 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:05:24,224 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-19 23:05:24,224 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:05:24,224 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 3 letters. Loop has 6 letters. [2019-11-19 23:05:24,225 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:05:24,226 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 203 states and 343 transitions. [2019-11-19 23:05:24,249 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 39 [2019-11-19 23:05:24,256 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 203 states to 78 states and 119 transitions. [2019-11-19 23:05:24,258 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2019-11-19 23:05:24,259 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 75 [2019-11-19 23:05:24,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 119 transitions. [2019-11-19 23:05:24,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 23:05:24,260 INFO L688 BuchiCegarLoop]: Abstraction has 78 states and 119 transitions. [2019-11-19 23:05:24,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states and 119 transitions. [2019-11-19 23:05:24,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 67. [2019-11-19 23:05:24,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-11-19 23:05:24,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 107 transitions. [2019-11-19 23:05:24,298 INFO L711 BuchiCegarLoop]: Abstraction has 67 states and 107 transitions. [2019-11-19 23:05:24,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:05:24,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 23:05:24,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 23:05:24,302 INFO L87 Difference]: Start difference. First operand 67 states and 107 transitions. Second operand 3 states. [2019-11-19 23:05:24,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:05:24,405 INFO L93 Difference]: Finished difference Result 34 states and 47 transitions. [2019-11-19 23:05:24,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 23:05:24,406 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 47 transitions. [2019-11-19 23:05:24,407 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2019-11-19 23:05:24,408 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 34 states and 47 transitions. [2019-11-19 23:05:24,409 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2019-11-19 23:05:24,409 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2019-11-19 23:05:24,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 47 transitions. [2019-11-19 23:05:24,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-19 23:05:24,410 INFO L688 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2019-11-19 23:05:24,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 47 transitions. [2019-11-19 23:05:24,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-11-19 23:05:24,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-19 23:05:24,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2019-11-19 23:05:24,414 INFO L711 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2019-11-19 23:05:24,415 INFO L591 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2019-11-19 23:05:24,415 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-19 23:05:24,415 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 47 transitions. [2019-11-19 23:05:24,416 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2019-11-19 23:05:24,416 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 23:05:24,416 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 23:05:24,420 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-19 23:05:24,420 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-19 23:05:24,421 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 [2019-11-19 23:05:24,421 INFO L796 eck$LassoCheckResult]: Loop: 422#L47-5 assume !false; 425#L48-1 assume base2flt_~m % 4294967296 >= 33554432; 420#L49-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 422#L47-5 [2019-11-19 23:05:24,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:05:24,421 INFO L82 PathProgramCache]: Analyzing trace with hash 921737699, now seen corresponding path program 1 times [2019-11-19 23:05:24,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:05:24,422 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512488179] [2019-11-19 23:05:24,423 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:05:24,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:05:24,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:05:24,528 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512488179] [2019-11-19 23:05:24,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:05:24,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-19 23:05:24,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089861783] [2019-11-19 23:05:24,529 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-19 23:05:24,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:05:24,530 INFO L82 PathProgramCache]: Analyzing trace with hash 136178, now seen corresponding path program 1 times [2019-11-19 23:05:24,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:05:24,530 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985953181] [2019-11-19 23:05:24,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:05:24,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:05:24,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:05:24,561 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:05:24,612 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 23:05:24,612 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 23:05:24,613 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 23:05:24,613 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 23:05:24,613 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 23:05:24,613 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:05:24,613 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 23:05:24,614 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 23:05:24,614 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration2_Loop [2019-11-19 23:05:24,614 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 23:05:24,614 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 23:05:24,616 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:05:24,630 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:05:24,793 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 23:05:24,793 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 23:05:24,811 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 23:05:24,811 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:05:24,821 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 23:05:24,821 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_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 23:05:24,846 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 23:05:24,847 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 23:05:24,873 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 23:05:24,873 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:05:24,886 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 23:05:24,889 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 23:05:24,889 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 23:05:24,890 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 23:05:24,890 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 23:05:24,890 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 23:05:24,890 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:05:24,890 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 23:05:24,891 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 23:05:24,891 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration2_Loop [2019-11-19 23:05:24,891 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 23:05:24,891 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 23:05:24,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:05:24,907 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:05:25,055 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 23:05:25,055 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 23:05:25,075 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:05:25,078 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:05:25,078 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:05:25,078 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:05:25,078 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:05:25,079 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:05:25,083 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:05:25,085 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:05:25,090 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/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 [2019-11-19 23:05:25,110 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:05:25,112 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:05:25,112 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:05:25,113 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:05:25,113 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:05:25,113 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:05:25,117 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:05:25,117 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 23:05:25,122 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 23:05:25,126 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-19 23:05:25,126 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_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/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 [2019-11-19 23:05:25,143 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 23:05:25,143 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 23:05:25,144 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 23:05:25,144 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2019-11-19 23:05:25,147 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-19 23:05:25,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:05:25,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:05:25,198 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 23:05:25,199 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:05:25,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:05:25,207 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 23:05:25,207 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:05:25,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:05:25,209 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-19 23:05:25,209 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 47 transitions. cyclomatic complexity: 19 Second operand 3 states. [2019-11-19 23:05:25,243 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 34 states and 47 transitions. cyclomatic complexity: 19. Second operand 3 states. Result 62 states and 84 transitions. Complement of second has 5 states. [2019-11-19 23:05:25,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-19 23:05:25,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-19 23:05:25,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2019-11-19 23:05:25,247 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-19 23:05:25,247 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:05:25,247 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-19 23:05:25,248 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:05:25,248 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 6 letters. Loop has 6 letters. [2019-11-19 23:05:25,248 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:05:25,248 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 84 transitions. [2019-11-19 23:05:25,250 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2019-11-19 23:05:25,252 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 59 states and 80 transitions. [2019-11-19 23:05:25,252 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 55 [2019-11-19 23:05:25,253 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 56 [2019-11-19 23:05:25,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 80 transitions. [2019-11-19 23:05:25,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 23:05:25,254 INFO L688 BuchiCegarLoop]: Abstraction has 59 states and 80 transitions. [2019-11-19 23:05:25,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states and 80 transitions. [2019-11-19 23:05:25,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 37. [2019-11-19 23:05:25,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-19 23:05:25,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2019-11-19 23:05:25,267 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 51 transitions. [2019-11-19 23:05:25,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:05:25,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 23:05:25,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 23:05:25,268 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand 3 states. [2019-11-19 23:05:25,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:05:25,367 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2019-11-19 23:05:25,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 23:05:25,368 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 46 transitions. [2019-11-19 23:05:25,369 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2019-11-19 23:05:25,370 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 46 transitions. [2019-11-19 23:05:25,371 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2019-11-19 23:05:25,371 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2019-11-19 23:05:25,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 46 transitions. [2019-11-19 23:05:25,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-19 23:05:25,372 INFO L688 BuchiCegarLoop]: Abstraction has 35 states and 46 transitions. [2019-11-19 23:05:25,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 46 transitions. [2019-11-19 23:05:25,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2019-11-19 23:05:25,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-19 23:05:25,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2019-11-19 23:05:25,376 INFO L711 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2019-11-19 23:05:25,376 INFO L591 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2019-11-19 23:05:25,376 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-19 23:05:25,381 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 41 transitions. [2019-11-19 23:05:25,382 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2019-11-19 23:05:25,383 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 23:05:25,383 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 23:05:25,384 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-19 23:05:25,384 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-19 23:05:25,384 INFO L794 eck$LassoCheckResult]: Stem: 658#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 655#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 632#L69 base2flt_#res := base2flt_~__retres4~0; 633#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 652#L19-1 assume !(0 == base2flt_~m % 4294967296); 640#L25-1 assume base2flt_~m % 4294967296 < 16777216; 641#L37-3 [2019-11-19 23:05:25,385 INFO L796 eck$LassoCheckResult]: Loop: 641#L37-3 assume !false; 650#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 651#L37-2 assume base2flt_~m % 4294967296 < 16777216; 641#L37-3 [2019-11-19 23:05:25,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:05:25,385 INFO L82 PathProgramCache]: Analyzing trace with hash 921737673, now seen corresponding path program 1 times [2019-11-19 23:05:25,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:05:25,386 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376858049] [2019-11-19 23:05:25,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:05:25,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:05:25,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:05:25,438 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:05:25,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:05:25,439 INFO L82 PathProgramCache]: Analyzing trace with hash 110419, now seen corresponding path program 1 times [2019-11-19 23:05:25,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:05:25,440 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643870347] [2019-11-19 23:05:25,441 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:05:25,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:05:25,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:05:25,452 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:05:25,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:05:25,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1761173643, now seen corresponding path program 1 times [2019-11-19 23:05:25,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:05:25,454 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878134208] [2019-11-19 23:05:25,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:05:25,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:05:25,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:05:25,521 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:05:25,573 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 23:05:25,573 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 23:05:25,574 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 23:05:25,574 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 23:05:25,574 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 23:05:25,574 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:05:25,574 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 23:05:25,575 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 23:05:25,575 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration3_Loop [2019-11-19 23:05:25,575 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 23:05:25,575 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 23:05:25,577 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:05:25,590 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:05:25,708 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 23:05:25,708 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/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 [2019-11-19 23:05:25,723 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 23:05:25,723 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 23:05:25,734 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 23:05:25,735 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_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/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 [2019-11-19 23:05:25,750 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 23:05:25,750 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/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 [2019-11-19 23:05:25,778 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 23:05:25,778 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 23:05:25,794 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 23:05:25,797 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 23:05:25,797 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 23:05:25,797 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 23:05:25,798 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 23:05:25,798 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 23:05:25,798 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:05:25,798 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 23:05:25,798 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 23:05:25,798 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration3_Loop [2019-11-19 23:05:25,799 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 23:05:25,799 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 23:05:25,800 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:05:25,817 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:05:25,922 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 23:05:25,922 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/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 [2019-11-19 23:05:25,939 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:05:25,941 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:05:25,942 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:05:25,942 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:05:25,942 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:05:25,942 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:05:25,946 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:05:25,947 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 23:05:25,952 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/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) [2019-11-19 23:05:25,971 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:05:25,977 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:05:25,977 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:05:25,977 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:05:25,977 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:05:25,978 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:05:25,980 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:05:25,980 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:05:25,989 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 23:05:25,993 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-19 23:05:25,994 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_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:05:26,002 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 23:05:26,002 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 23:05:26,003 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 23:05:26,003 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2019-11-19 23:05:26,014 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-19 23:05:26,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:05:26,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:05:26,060 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 23:05:26,062 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:05:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:05:26,070 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 23:05:26,070 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:05:26,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:05:26,103 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-19 23:05:26,103 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 41 transitions. cyclomatic complexity: 15 Second operand 4 states. [2019-11-19 23:05:26,119 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 41 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 59 states and 78 transitions. Complement of second has 5 states. [2019-11-19 23:05:26,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-19 23:05:26,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-19 23:05:26,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2019-11-19 23:05:26,121 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-19 23:05:26,121 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:05:26,121 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-19 23:05:26,122 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:05:26,122 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 6 letters. Loop has 6 letters. [2019-11-19 23:05:26,122 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:05:26,123 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 59 states and 78 transitions. [2019-11-19 23:05:26,124 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2019-11-19 23:05:26,125 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 59 states to 56 states and 74 transitions. [2019-11-19 23:05:26,125 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 50 [2019-11-19 23:05:26,126 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2019-11-19 23:05:26,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 74 transitions. [2019-11-19 23:05:26,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 23:05:26,126 INFO L688 BuchiCegarLoop]: Abstraction has 56 states and 74 transitions. [2019-11-19 23:05:26,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 74 transitions. [2019-11-19 23:05:26,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 34. [2019-11-19 23:05:26,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-19 23:05:26,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2019-11-19 23:05:26,131 INFO L711 BuchiCegarLoop]: Abstraction has 34 states and 45 transitions. [2019-11-19 23:05:26,131 INFO L591 BuchiCegarLoop]: Abstraction has 34 states and 45 transitions. [2019-11-19 23:05:26,131 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-19 23:05:26,131 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 45 transitions. [2019-11-19 23:05:26,132 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2019-11-19 23:05:26,132 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 23:05:26,133 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 23:05:26,133 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:05:26,133 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-19 23:05:26,134 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 [2019-11-19 23:05:26,134 INFO L796 eck$LassoCheckResult]: Loop: 769#L47-8 assume !false; 792#L48-2 assume base2flt_~m % 4294967296 >= 33554432; 767#L49-2 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 769#L47-8 [2019-11-19 23:05:26,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:05:26,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1760951196, now seen corresponding path program 1 times [2019-11-19 23:05:26,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:05:26,135 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997111455] [2019-11-19 23:05:26,136 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:05:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:05:26,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:05:26,191 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997111455] [2019-11-19 23:05:26,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:05:26,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-19 23:05:26,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133769772] [2019-11-19 23:05:26,192 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-19 23:05:26,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:05:26,193 INFO L82 PathProgramCache]: Analyzing trace with hash 198737, now seen corresponding path program 1 times [2019-11-19 23:05:26,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:05:26,193 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366679428] [2019-11-19 23:05:26,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:05:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:05:26,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:05:26,210 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:05:26,238 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 23:05:26,238 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 23:05:26,238 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 23:05:26,238 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 23:05:26,238 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 23:05:26,238 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:05:26,238 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 23:05:26,239 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 23:05:26,239 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration4_Loop [2019-11-19 23:05:26,239 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 23:05:26,239 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 23:05:26,240 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:05:26,249 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:05:26,401 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 23:05:26,401 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:05:26,410 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 23:05:26,410 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:05:26,421 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 23:05:26,421 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 23:05:26,434 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 23:05:26,436 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 23:05:26,436 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 23:05:26,436 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 23:05:26,436 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 23:05:26,436 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 23:05:26,436 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:05:26,437 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 23:05:26,437 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 23:05:26,437 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration4_Loop [2019-11-19 23:05:26,437 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 23:05:26,437 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 23:05:26,438 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:05:26,450 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:05:26,560 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 23:05:26,560 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 23:05:26,570 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:05:26,572 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:05:26,573 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:05:26,573 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:05:26,573 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:05:26,573 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:05:26,575 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:05:26,575 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:05:26,579 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 23:05:26,582 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-19 23:05:26,582 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_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 23:05:26,595 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 23:05:26,596 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 23:05:26,596 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 23:05:26,596 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:05:26,605 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-19 23:05:26,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:05:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:05:26,654 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 23:05:26,655 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:05:26,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:05:26,662 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 23:05:26,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:05:26,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:05:26,663 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-19 23:05:26,663 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 45 transitions. cyclomatic complexity: 16 Second operand 3 states. [2019-11-19 23:05:26,689 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 34 states and 45 transitions. cyclomatic complexity: 16. Second operand 3 states. Result 51 states and 65 transitions. Complement of second has 5 states. [2019-11-19 23:05:26,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-19 23:05:26,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-19 23:05:26,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2019-11-19 23:05:26,690 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-19 23:05:26,690 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:05:26,690 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 3 letters. [2019-11-19 23:05:26,691 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:05:26,691 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 6 letters. [2019-11-19 23:05:26,691 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:05:26,692 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 65 transitions. [2019-11-19 23:05:26,692 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2019-11-19 23:05:26,693 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 48 states and 61 transitions. [2019-11-19 23:05:26,694 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2019-11-19 23:05:26,694 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2019-11-19 23:05:26,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 61 transitions. [2019-11-19 23:05:26,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 23:05:26,695 INFO L688 BuchiCegarLoop]: Abstraction has 48 states and 61 transitions. [2019-11-19 23:05:26,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 61 transitions. [2019-11-19 23:05:26,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 37. [2019-11-19 23:05:26,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-19 23:05:26,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2019-11-19 23:05:26,704 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 49 transitions. [2019-11-19 23:05:26,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:05:26,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 23:05:26,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 23:05:26,705 INFO L87 Difference]: Start difference. First operand 37 states and 49 transitions. Second operand 3 states. [2019-11-19 23:05:26,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:05:26,779 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2019-11-19 23:05:26,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 23:05:26,780 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 52 transitions. [2019-11-19 23:05:26,781 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2019-11-19 23:05:26,782 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 41 states and 52 transitions. [2019-11-19 23:05:26,782 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2019-11-19 23:05:26,782 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2019-11-19 23:05:26,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 52 transitions. [2019-11-19 23:05:26,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 23:05:26,783 INFO L688 BuchiCegarLoop]: Abstraction has 41 states and 52 transitions. [2019-11-19 23:05:26,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 52 transitions. [2019-11-19 23:05:26,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2019-11-19 23:05:26,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-19 23:05:26,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2019-11-19 23:05:26,787 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2019-11-19 23:05:26,787 INFO L591 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2019-11-19 23:05:26,787 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-19 23:05:26,787 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 37 states and 48 transitions. [2019-11-19 23:05:26,788 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2019-11-19 23:05:26,788 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 23:05:26,788 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 23:05:26,792 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:05:26,792 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-19 23:05:26,793 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 [2019-11-19 23:05:26,793 INFO L796 eck$LassoCheckResult]: Loop: 997#L37-5 assume !false; 1004#L28-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1005#L37-4 assume base2flt_~m % 4294967296 < 16777216; 997#L37-5 [2019-11-19 23:05:26,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:05:26,793 INFO L82 PathProgramCache]: Analyzing trace with hash -197167406, now seen corresponding path program 1 times [2019-11-19 23:05:26,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:05:26,794 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530321221] [2019-11-19 23:05:26,794 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:05:26,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:05:26,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:05:26,858 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530321221] [2019-11-19 23:05:26,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:05:26,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-19 23:05:26,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012426911] [2019-11-19 23:05:26,859 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-19 23:05:26,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:05:26,859 INFO L82 PathProgramCache]: Analyzing trace with hash 172978, now seen corresponding path program 1 times [2019-11-19 23:05:26,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:05:26,860 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076990939] [2019-11-19 23:05:26,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:05:26,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:05:26,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:05:26,866 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:05:26,908 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 23:05:26,908 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 23:05:26,908 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 23:05:26,908 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 23:05:26,908 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 23:05:26,908 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:05:26,908 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 23:05:26,909 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 23:05:26,909 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration5_Loop [2019-11-19 23:05:26,909 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 23:05:26,909 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 23:05:26,910 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:05:26,920 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:05:26,998 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 23:05:26,998 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 23:05:27,006 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 23:05:27,006 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:05:27,016 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 23:05:27,016 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_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/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 [2019-11-19 23:05:27,022 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 23:05:27,022 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 23:05:27,031 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 23:05:27,032 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:05:27,045 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 23:05:27,047 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 23:05:27,047 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 23:05:27,047 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 23:05:27,047 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 23:05:27,048 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 23:05:27,048 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:05:27,048 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 23:05:27,048 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 23:05:27,048 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration5_Loop [2019-11-19 23:05:27,048 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 23:05:27,048 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 23:05:27,049 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:05:27,062 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:05:27,133 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 23:05:27,134 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:05:27,142 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:05:27,144 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:05:27,144 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:05:27,144 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:05:27,144 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:05:27,144 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:05:27,146 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:05:27,146 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 23:05:27,150 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:05:27,156 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:05:27,157 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:05:27,157 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:05:27,158 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:05:27,158 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:05:27,158 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:05:27,159 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:05:27,159 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 23:05:27,162 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 23:05:27,167 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-19 23:05:27,167 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_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/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 [2019-11-19 23:05:27,172 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 23:05:27,172 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 23:05:27,172 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 23:05:27,172 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2019-11-19 23:05:27,174 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-19 23:05:27,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:05:27,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:05:27,217 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 23:05:27,218 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:05:27,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:05:27,226 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 23:05:27,226 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:05:27,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:05:27,242 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-19 23:05:27,242 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 48 transitions. cyclomatic complexity: 16 Second operand 4 states. [2019-11-19 23:05:27,261 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 37 states and 48 transitions. cyclomatic complexity: 16. Second operand 4 states. Result 55 states and 69 transitions. Complement of second has 5 states. [2019-11-19 23:05:27,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-19 23:05:27,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-19 23:05:27,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2019-11-19 23:05:27,266 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 3 letters. [2019-11-19 23:05:27,266 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:05:27,266 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 15 letters. Loop has 3 letters. [2019-11-19 23:05:27,267 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:05:27,267 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 6 letters. [2019-11-19 23:05:27,267 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:05:27,267 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 55 states and 69 transitions. [2019-11-19 23:05:27,268 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2019-11-19 23:05:27,269 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 55 states to 52 states and 65 transitions. [2019-11-19 23:05:27,269 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2019-11-19 23:05:27,270 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2019-11-19 23:05:27,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 65 transitions. [2019-11-19 23:05:27,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 23:05:27,270 INFO L688 BuchiCegarLoop]: Abstraction has 52 states and 65 transitions. [2019-11-19 23:05:27,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 65 transitions. [2019-11-19 23:05:27,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2019-11-19 23:05:27,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-19 23:05:27,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 52 transitions. [2019-11-19 23:05:27,274 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 52 transitions. [2019-11-19 23:05:27,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:05:27,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 23:05:27,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-19 23:05:27,275 INFO L87 Difference]: Start difference. First operand 40 states and 52 transitions. Second operand 4 states. [2019-11-19 23:05:27,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:05:27,369 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2019-11-19 23:05:27,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-19 23:05:27,370 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 55 transitions. [2019-11-19 23:05:27,371 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-19 23:05:27,371 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 43 states and 54 transitions. [2019-11-19 23:05:27,372 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2019-11-19 23:05:27,372 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2019-11-19 23:05:27,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 54 transitions. [2019-11-19 23:05:27,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 23:05:27,372 INFO L688 BuchiCegarLoop]: Abstraction has 43 states and 54 transitions. [2019-11-19 23:05:27,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 54 transitions. [2019-11-19 23:05:27,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2019-11-19 23:05:27,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-19 23:05:27,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2019-11-19 23:05:27,376 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2019-11-19 23:05:27,376 INFO L591 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2019-11-19 23:05:27,376 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-19 23:05:27,376 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 51 transitions. [2019-11-19 23:05:27,377 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-19 23:05:27,377 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 23:05:27,377 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 23:05:27,378 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:05:27,378 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-19 23:05:27,379 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 [2019-11-19 23:05:27,379 INFO L796 eck$LassoCheckResult]: Loop: 1239#L47-11 assume !false; 1268#L48-3 assume base2flt_~m % 4294967296 >= 33554432; 1246#L49-3 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 1239#L47-11 [2019-11-19 23:05:27,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:05:27,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1360904017, now seen corresponding path program 1 times [2019-11-19 23:05:27,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:05:27,380 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403041952] [2019-11-19 23:05:27,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:05:27,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:05:27,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:05:27,489 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403041952] [2019-11-19 23:05:27,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:05:27,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-19 23:05:27,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281080205] [2019-11-19 23:05:27,490 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-19 23:05:27,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:05:27,490 INFO L82 PathProgramCache]: Analyzing trace with hash 261296, now seen corresponding path program 1 times [2019-11-19 23:05:27,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:05:27,490 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961891348] [2019-11-19 23:05:27,491 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:05:27,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:05:27,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:05:27,515 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:05:27,542 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 23:05:27,542 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 23:05:27,542 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 23:05:27,542 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 23:05:27,542 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 23:05:27,542 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:05:27,542 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 23:05:27,543 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 23:05:27,543 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration6_Loop [2019-11-19 23:05:27,543 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 23:05:27,543 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 23:05:27,544 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:05:27,552 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:05:27,666 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 23:05:27,666 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 23:05:27,674 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 23:05:27,674 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 23:05:27,690 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 23:05:27,691 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:05:27,701 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 23:05:27,703 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 23:05:27,703 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 23:05:27,704 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 23:05:27,704 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 23:05:27,704 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 23:05:27,704 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:05:27,704 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 23:05:27,704 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 23:05:27,704 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration6_Loop [2019-11-19 23:05:27,704 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 23:05:27,704 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 23:05:27,705 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:05:27,714 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:05:27,837 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 23:05:27,838 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/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) [2019-11-19 23:05:27,847 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:05:27,849 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:05:27,849 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:05:27,849 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:05:27,850 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:05:27,850 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:05:27,851 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:05:27,851 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:05:27,855 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 23:05:27,859 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-19 23:05:27,859 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_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/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) [2019-11-19 23:05:27,869 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 23:05:27,870 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 23:05:27,870 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 23:05:27,870 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2019-11-19 23:05:27,873 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:05:27,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:05:27,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:05:27,929 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 23:05:27,931 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:05:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:05:27,941 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 23:05:27,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:05:27,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:05:27,943 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-19 23:05:27,943 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 51 transitions. cyclomatic complexity: 16 Second operand 3 states. [2019-11-19 23:05:27,955 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 51 transitions. cyclomatic complexity: 16. Second operand 3 states. Result 43 states and 55 transitions. Complement of second has 4 states. [2019-11-19 23:05:27,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-19 23:05:27,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-19 23:05:27,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2019-11-19 23:05:27,956 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 17 letters. Loop has 3 letters. [2019-11-19 23:05:27,957 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:05:27,957 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 20 letters. Loop has 3 letters. [2019-11-19 23:05:27,957 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:05:27,957 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 17 letters. Loop has 6 letters. [2019-11-19 23:05:27,958 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:05:27,958 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 55 transitions. [2019-11-19 23:05:27,959 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-19 23:05:27,959 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 37 states and 47 transitions. [2019-11-19 23:05:27,959 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2019-11-19 23:05:27,960 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2019-11-19 23:05:27,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 47 transitions. [2019-11-19 23:05:27,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 23:05:27,960 INFO L688 BuchiCegarLoop]: Abstraction has 37 states and 47 transitions. [2019-11-19 23:05:27,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 47 transitions. [2019-11-19 23:05:27,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-11-19 23:05:27,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-19 23:05:27,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2019-11-19 23:05:27,963 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 47 transitions. [2019-11-19 23:05:27,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:05:27,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 23:05:27,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-19 23:05:27,964 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand 4 states. [2019-11-19 23:05:28,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:05:28,067 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2019-11-19 23:05:28,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-19 23:05:28,068 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 56 transitions. [2019-11-19 23:05:28,069 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-19 23:05:28,070 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 45 states and 56 transitions. [2019-11-19 23:05:28,070 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2019-11-19 23:05:28,070 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2019-11-19 23:05:28,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 56 transitions. [2019-11-19 23:05:28,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 23:05:28,071 INFO L688 BuchiCegarLoop]: Abstraction has 45 states and 56 transitions. [2019-11-19 23:05:28,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 56 transitions. [2019-11-19 23:05:28,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2019-11-19 23:05:28,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-19 23:05:28,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2019-11-19 23:05:28,074 INFO L711 BuchiCegarLoop]: Abstraction has 39 states and 50 transitions. [2019-11-19 23:05:28,074 INFO L591 BuchiCegarLoop]: Abstraction has 39 states and 50 transitions. [2019-11-19 23:05:28,074 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-19 23:05:28,074 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 50 transitions. [2019-11-19 23:05:28,075 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-19 23:05:28,075 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 23:05:28,075 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 23:05:28,076 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:05:28,076 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-19 23:05:28,079 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 [2019-11-19 23:05:28,079 INFO L796 eck$LassoCheckResult]: Loop: 1480#L37-7 assume !false; 1481#L28-3 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1505#L37-6 assume base2flt_~m % 4294967296 < 16777216; 1480#L37-7 [2019-11-19 23:05:28,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:05:28,083 INFO L82 PathProgramCache]: Analyzing trace with hash -377438794, now seen corresponding path program 1 times [2019-11-19 23:05:28,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:05:28,084 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690320545] [2019-11-19 23:05:28,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:05:28,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:05:28,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:05:28,175 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690320545] [2019-11-19 23:05:28,175 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620703150] [2019-11-19 23:05:28,175 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/bin/uautomizer/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 23:05:28,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:05:28,231 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 23:05:28,233 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:05:28,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:05:28,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 23:05:28,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2019-11-19 23:05:28,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180103310] [2019-11-19 23:05:28,242 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-19 23:05:28,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:05:28,243 INFO L82 PathProgramCache]: Analyzing trace with hash 235537, now seen corresponding path program 1 times [2019-11-19 23:05:28,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:05:28,243 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618444622] [2019-11-19 23:05:28,244 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:05:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:05:28,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:05:28,260 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:05:28,289 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 23:05:28,289 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 23:05:28,289 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 23:05:28,289 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 23:05:28,290 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 23:05:28,290 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:05:28,290 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 23:05:28,290 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 23:05:28,290 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration7_Loop [2019-11-19 23:05:28,291 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 23:05:28,291 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 23:05:28,292 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:05:28,303 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:05:28,404 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 23:05:28,404 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/bin/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 23:05:28,413 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 23:05:28,413 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:05:28,422 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 23:05:28,422 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_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 23:05:28,434 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 23:05:28,434 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 23:05:28,450 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 23:05:28,450 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:05:28,460 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 23:05:28,462 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 23:05:28,462 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 23:05:28,462 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 23:05:28,463 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 23:05:28,463 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 23:05:28,463 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:05:28,463 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 23:05:28,463 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 23:05:28,463 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration7_Loop [2019-11-19 23:05:28,463 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 23:05:28,463 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 23:05:28,464 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:05:28,471 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:05:28,533 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 23:05:28,533 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/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 [2019-11-19 23:05:28,539 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:05:28,540 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:05:28,540 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:05:28,541 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:05:28,541 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:05:28,541 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:05:28,543 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:05:28,544 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 23:05:28,547 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/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 [2019-11-19 23:05:28,552 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:05:28,557 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:05:28,557 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:05:28,558 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:05:28,558 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:05:28,558 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:05:28,559 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:05:28,559 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 23:05:28,562 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 23:05:28,564 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-19 23:05:28,564 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_f7162cf3-44ae-473f-a1f8-23bc7ac7a613/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 [2019-11-19 23:05:28,569 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 23:05:28,569 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 23:05:28,569 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 23:05:28,569 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2019-11-19 23:05:28,571 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-19 23:05:28,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:05:28,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:05:28,613 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 23:05:28,614 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:05:28,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:05:28,625 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 23:05:28,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:05:28,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:05:28,653 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-19 23:05:28,654 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 50 transitions. cyclomatic complexity: 15 Second operand 4 states. [2019-11-19 23:05:28,662 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 50 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 43 states and 54 transitions. Complement of second has 4 states. [2019-11-19 23:05:28,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-19 23:05:28,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-19 23:05:28,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2019-11-19 23:05:28,666 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 18 letters. Loop has 3 letters. [2019-11-19 23:05:28,666 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:05:28,666 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 21 letters. Loop has 3 letters. [2019-11-19 23:05:28,667 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:05:28,667 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 18 letters. Loop has 6 letters. [2019-11-19 23:05:28,667 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:05:28,667 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 54 transitions. [2019-11-19 23:05:28,668 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-19 23:05:28,668 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 0 states and 0 transitions. [2019-11-19 23:05:28,668 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-19 23:05:28,668 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-19 23:05:28,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-19 23:05:28,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-19 23:05:28,669 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 23:05:28,669 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 23:05:28,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:05:28,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 23:05:28,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-19 23:05:28,670 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2019-11-19 23:05:28,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:05:28,670 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-11-19 23:05:28,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-19 23:05:28,670 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-11-19 23:05:28,670 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-19 23:05:28,670 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-11-19 23:05:28,671 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-19 23:05:28,671 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-19 23:05:28,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-19 23:05:28,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-19 23:05:28,671 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 23:05:28,671 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 23:05:28,671 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 23:05:28,671 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-11-19 23:05:28,671 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-19 23:05:28,672 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-19 23:05:28,674 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-19 23:05:28,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.11 11:05:28 BoogieIcfgContainer [2019-11-19 23:05:28,686 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-19 23:05:28,686 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 23:05:28,687 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 23:05:28,687 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 23:05:28,688 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:05:22" (3/4) ... [2019-11-19 23:05:28,692 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-19 23:05:28,692 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 23:05:28,697 INFO L168 Benchmark]: Toolchain (without parser) took 7311.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 220.7 MB). Free memory was 950.1 MB in the beginning and 930.5 MB in the end (delta: 19.6 MB). Peak memory consumption was 240.3 MB. Max. memory is 11.5 GB. [2019-11-19 23:05:28,698 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:05:28,705 INFO L168 Benchmark]: CACSL2BoogieTranslator took 518.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -181.0 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. [2019-11-19 23:05:28,705 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-11-19 23:05:28,706 INFO L168 Benchmark]: Boogie Preprocessor took 43.09 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:05:28,707 INFO L168 Benchmark]: RCFGBuilder took 735.12 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: 35.6 MB). Peak memory consumption was 35.6 MB. Max. memory is 11.5 GB. [2019-11-19 23:05:28,711 INFO L168 Benchmark]: BuchiAutomizer took 5943.33 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 79.2 MB). Free memory was 1.1 GB in the beginning and 930.5 MB in the end (delta: 158.2 MB). Peak memory consumption was 237.4 MB. Max. memory is 11.5 GB. [2019-11-19 23:05:28,714 INFO L168 Benchmark]: Witness Printer took 6.24 ms. Allocated memory is still 1.2 GB. Free memory is still 930.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:05:28,721 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 518.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -181.0 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 58.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 43.09 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 735.12 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: 35.6 MB). Peak memory consumption was 35.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 5943.33 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 79.2 MB). Free memory was 1.1 GB in the beginning and 930.5 MB in the end (delta: 158.2 MB). Peak memory consumption was 237.4 MB. Max. memory is 11.5 GB. * Witness Printer took 6.24 ms. Allocated memory is still 1.2 GB. Free memory is still 930.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 13 terminating modules (6 trivial, 7 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * e + 253 and consists of 4 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. 6 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.8s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 4.3s. Construction of modules took 0.4s. Büchi inclusion checks took 0.8s. 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, 0.4s 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: 34ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...