./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2002814e-6e54-45ac-aa7c-007a8d403640/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 cac40a9ba224163bfdf0833231d07bf58d2881f1 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 15:00:33,294 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:00:33,295 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:00:33,304 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:00:33,304 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:00:33,305 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:00:33,306 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:00:33,308 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:00:33,310 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:00:33,310 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:00:33,311 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:00:33,312 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:00:33,312 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:00:33,313 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:00:33,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:00:33,314 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:00:33,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:00:33,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:00:33,318 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:00:33,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:00:33,320 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:00:33,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:00:33,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:00:33,323 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:00:33,325 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:00:33,325 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:00:33,325 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:00:33,326 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:00:33,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:00:33,327 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:00:33,327 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:00:33,328 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:00:33,328 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:00:33,329 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:00:33,330 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:00:33,330 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:00:33,330 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:00:33,331 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:00:33,331 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:00:33,332 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:00:33,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:00:33,333 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-12-07 15:00:33,348 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:00:33,348 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:00:33,349 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 15:00:33,349 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 15:00:33,350 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 15:00:33,350 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 15:00:33,350 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 15:00:33,350 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 15:00:33,350 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 15:00:33,350 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 15:00:33,351 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 15:00:33,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:00:33,351 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 15:00:33,351 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 15:00:33,351 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 15:00:33,352 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 15:00:33,352 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:00:33,352 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 15:00:33,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 15:00:33,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 15:00:33,352 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 15:00:33,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 15:00:33,353 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 15:00:33,353 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:00:33,353 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 15:00:33,353 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:00:33,353 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 15:00:33,354 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 15:00:33,354 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:00:33,354 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 15:00:33,354 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:00:33,354 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 15:00:33,355 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 15:00:33,355 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_2002814e-6e54-45ac-aa7c-007a8d403640/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 -> cac40a9ba224163bfdf0833231d07bf58d2881f1 [2019-12-07 15:00:33,467 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:00:33,475 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:00:33,477 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:00:33,478 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:00:33,478 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:00:33,479 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c [2019-12-07 15:00:33,523 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/data/1bfd8808e/1ccff5ec35d94a4a9515c36eb67d264c/FLAG8d5c03bc7 [2019-12-07 15:00:33,951 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:00:33,952 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2002814e-6e54-45ac-aa7c-007a8d403640/sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c [2019-12-07 15:00:33,956 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/data/1bfd8808e/1ccff5ec35d94a4a9515c36eb67d264c/FLAG8d5c03bc7 [2019-12-07 15:00:33,965 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/data/1bfd8808e/1ccff5ec35d94a4a9515c36eb67d264c [2019-12-07 15:00:33,967 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:00:33,968 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 15:00:33,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:00:33,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:00:33,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:00:33,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:00:33" (1/1) ... [2019-12-07 15:00:33,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17574348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:00:33, skipping insertion in model container [2019-12-07 15:00:33,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:00:33" (1/1) ... [2019-12-07 15:00:33,978 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:00:33,994 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:00:34,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:00:34,150 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:00:34,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:00:34,185 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:00:34,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:00:34 WrapperNode [2019-12-07 15:00:34,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:00:34,186 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 15:00:34,186 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 15:00:34,186 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 15:00:34,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:00:34" (1/1) ... [2019-12-07 15:00:34,197 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:00:34" (1/1) ... [2019-12-07 15:00:34,215 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 15:00:34,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:00:34,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:00:34,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:00:34,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:00:34" (1/1) ... [2019-12-07 15:00:34,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:00:34" (1/1) ... [2019-12-07 15:00:34,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:00:34" (1/1) ... [2019-12-07 15:00:34,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:00:34" (1/1) ... [2019-12-07 15:00:34,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:00:34" (1/1) ... [2019-12-07 15:00:34,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:00:34" (1/1) ... [2019-12-07 15:00:34,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:00:34" (1/1) ... [2019-12-07 15:00:34,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:00:34,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:00:34,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:00:34,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:00:34,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:00:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:34,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:00:34,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:00:34,517 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:00:34,517 INFO L287 CfgBuilder]: Removed 24 assume(true) statements. [2019-12-07 15:00:34,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:00:34 BoogieIcfgContainer [2019-12-07 15:00:34,518 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:00:34,519 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 15:00:34,519 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 15:00:34,521 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 15:00:34,521 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 15:00:34,521 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 03:00:33" (1/3) ... [2019-12-07 15:00:34,522 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@68985541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 03:00:34, skipping insertion in model container [2019-12-07 15:00:34,522 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 15:00:34,522 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:00:34" (2/3) ... [2019-12-07 15:00:34,523 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@68985541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 03:00:34, skipping insertion in model container [2019-12-07 15:00:34,523 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 15:00:34,523 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:00:34" (3/3) ... [2019-12-07 15:00:34,524 INFO L371 chiAutomizerObserver]: Analyzing ICFG soft_float_3a.c.cil.c [2019-12-07 15:00:34,552 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 15:00:34,552 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 15:00:34,552 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 15:00:34,552 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:00:34,552 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:00:34,552 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 15:00:34,552 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:00:34,553 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 15:00:34,563 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 69 states. [2019-12-07 15:00:34,579 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2019-12-07 15:00:34,579 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:00:34,579 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:00:34,584 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-12-07 15:00:34,584 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 15:00:34,584 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 15:00:34,584 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 69 states. [2019-12-07 15:00:34,588 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2019-12-07 15:00:34,588 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:00:34,588 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:00:34,588 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-12-07 15:00:34,588 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 15:00:34,593 INFO L794 eck$LassoCheckResult]: Stem: 41#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 35#L19true assume !(0 == base2flt_~m % 4294967296); 23#L25true assume !(base2flt_~m % 4294967296 < 16777216); 17#L47-2true [2019-12-07 15:00:34,593 INFO L796 eck$LassoCheckResult]: Loop: 17#L47-2true assume !false; 28#L48true assume base2flt_~m % 4294967296 >= 33554432; 53#L49true assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 17#L47-2true [2019-12-07 15:00:34,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:00:34,598 INFO L82 PathProgramCache]: Analyzing trace with hash 30973, now seen corresponding path program 1 times [2019-12-07 15:00:34,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:00:34,603 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299917122] [2019-12-07 15:00:34,603 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:00:34,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:00:34,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:00:34,703 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299917122] [2019-12-07 15:00:34,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:00:34,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 15:00:34,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681454711] [2019-12-07 15:00:34,708 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 15:00:34,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:00:34,708 INFO L82 PathProgramCache]: Analyzing trace with hash 73619, now seen corresponding path program 1 times [2019-12-07 15:00:34,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:00:34,708 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665638226] [2019-12-07 15:00:34,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:00:34,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:00:34,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:00:34,732 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:00:34,758 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:00:34,759 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:00:34,759 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:00:34,759 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:00:34,759 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 15:00:34,759 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:34,759 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:00:34,759 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:00:34,759 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration1_Loop [2019-12-07 15:00:34,760 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:00:34,760 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:00:34,773 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:00:34,782 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:00:34,849 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:00:34,849 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:34,853 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:00:34,854 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:00:34,864 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:00:34,864 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_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:34,868 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:00:34,868 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:34,874 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 15:00:34,874 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:00:34,879 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 15:00:34,880 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:00:34,880 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:00:34,880 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:00:34,880 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:00:34,880 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 15:00:34,881 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:34,881 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:00:34,881 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:00:34,881 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration1_Loop [2019-12-07 15:00:34,881 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:00:34,881 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:00:34,882 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:00:34,888 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:00:34,945 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:00:34,948 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:34,951 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:00:34,953 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:00:34,953 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:00:34,954 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:00:34,954 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:00:34,954 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:00:34,956 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:00:34,956 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:00:34,959 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:34,963 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:00:34,965 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:00:34,965 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:00:34,965 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:00:34,965 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:00:34,965 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:00:34,966 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:00:34,966 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:00:34,968 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 15:00:34,972 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 15:00:34,972 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_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:34,976 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 15:00:34,976 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 15:00:34,976 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 15:00:34,977 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2019-12-07 15:00:34,979 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 15:00:34,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:00:35,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:00:35,005 INFO L264 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:00:35,006 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:00:35,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:00:35,017 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 15:00:35,018 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:00:35,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:00:35,029 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-12-07 15:00:35,030 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 69 states. Second operand 3 states. [2019-12-07 15:00:35,085 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 69 states.. Second operand 3 states. Result 200 states and 340 transitions. Complement of second has 6 states. [2019-12-07 15:00:35,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 15:00:35,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 15:00:35,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 225 transitions. [2019-12-07 15:00:35,090 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 225 transitions. Stem has 3 letters. Loop has 3 letters. [2019-12-07 15:00:35,091 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:00:35,091 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 225 transitions. Stem has 6 letters. Loop has 3 letters. [2019-12-07 15:00:35,091 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:00:35,092 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 225 transitions. Stem has 3 letters. Loop has 6 letters. [2019-12-07 15:00:35,092 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:00:35,092 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 200 states and 340 transitions. [2019-12-07 15:00:35,101 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 39 [2019-12-07 15:00:35,105 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 200 states to 78 states and 119 transitions. [2019-12-07 15:00:35,105 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2019-12-07 15:00:35,106 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 75 [2019-12-07 15:00:35,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 119 transitions. [2019-12-07 15:00:35,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:00:35,107 INFO L688 BuchiCegarLoop]: Abstraction has 78 states and 119 transitions. [2019-12-07 15:00:35,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states and 119 transitions. [2019-12-07 15:00:35,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 67. [2019-12-07 15:00:35,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-12-07 15:00:35,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 107 transitions. [2019-12-07 15:00:35,129 INFO L711 BuchiCegarLoop]: Abstraction has 67 states and 107 transitions. [2019-12-07 15:00:35,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:00:35,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:00:35,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:00:35,132 INFO L87 Difference]: Start difference. First operand 67 states and 107 transitions. Second operand 3 states. [2019-12-07 15:00:35,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:00:35,174 INFO L93 Difference]: Finished difference Result 34 states and 47 transitions. [2019-12-07 15:00:35,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:00:35,175 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 47 transitions. [2019-12-07 15:00:35,176 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2019-12-07 15:00:35,176 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 34 states and 47 transitions. [2019-12-07 15:00:35,177 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2019-12-07 15:00:35,177 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2019-12-07 15:00:35,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 47 transitions. [2019-12-07 15:00:35,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 15:00:35,177 INFO L688 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2019-12-07 15:00:35,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 47 transitions. [2019-12-07 15:00:35,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-12-07 15:00:35,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-07 15:00:35,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2019-12-07 15:00:35,179 INFO L711 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2019-12-07 15:00:35,179 INFO L591 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2019-12-07 15:00:35,179 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 15:00:35,179 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 47 transitions. [2019-12-07 15:00:35,180 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2019-12-07 15:00:35,180 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:00:35,180 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:00:35,180 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-12-07 15:00:35,180 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 15:00:35,180 INFO L794 eck$LassoCheckResult]: Stem: 443#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; 441#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 414#L69 base2flt_#res := base2flt_~__retres4~0; 415#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; 438#L19-1 assume !(0 == base2flt_~m % 4294967296); 426#L25-1 assume !(base2flt_~m % 4294967296 < 16777216); 418#L47-5 [2019-12-07 15:00:35,181 INFO L796 eck$LassoCheckResult]: Loop: 418#L47-5 assume !false; 421#L48-1 assume base2flt_~m % 4294967296 >= 33554432; 416#L49-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 418#L47-5 [2019-12-07 15:00:35,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:00:35,181 INFO L82 PathProgramCache]: Analyzing trace with hash 921737699, now seen corresponding path program 1 times [2019-12-07 15:00:35,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:00:35,181 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198193502] [2019-12-07 15:00:35,181 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:00:35,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:00:35,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:00:35,216 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198193502] [2019-12-07 15:00:35,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:00:35,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:00:35,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839780523] [2019-12-07 15:00:35,217 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 15:00:35,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:00:35,217 INFO L82 PathProgramCache]: Analyzing trace with hash 136178, now seen corresponding path program 1 times [2019-12-07 15:00:35,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:00:35,217 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860660648] [2019-12-07 15:00:35,217 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:00:35,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:00:35,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:00:35,228 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:00:35,243 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:00:35,243 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:00:35,244 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:00:35,244 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:00:35,244 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 15:00:35,244 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:35,244 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:00:35,244 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:00:35,244 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration2_Loop [2019-12-07 15:00:35,244 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:00:35,244 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:00:35,245 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:00:35,252 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:00:35,306 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:00:35,306 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:35,309 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:00:35,309 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:00:35,314 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:00:35,314 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_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:35,319 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:00:35,319 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:35,325 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 15:00:35,325 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:00:35,332 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 15:00:35,333 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:00:35,333 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:00:35,333 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:00:35,333 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:00:35,333 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 15:00:35,333 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:35,333 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:00:35,333 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:00:35,333 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration2_Loop [2019-12-07 15:00:35,334 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:00:35,334 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:00:35,334 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:00:35,341 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:00:35,391 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:00:35,391 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:35,395 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:00:35,396 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:00:35,396 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:00:35,396 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:00:35,396 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:00:35,396 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:00:35,398 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:00:35,398 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:00:35,401 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:35,407 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:00:35,409 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:00:35,409 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:00:35,409 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:00:35,409 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:00:35,409 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:00:35,410 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:00:35,411 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:00:35,413 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 15:00:35,416 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 15:00:35,416 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_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:35,418 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 15:00:35,419 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 15:00:35,419 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 15:00:35,419 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2019-12-07 15:00:35,420 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 15:00:35,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:00:35,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:00:35,437 INFO L264 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:00:35,438 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:00:35,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:00:35,441 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 15:00:35,441 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:00:35,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:00:35,442 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-12-07 15:00:35,442 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 47 transitions. cyclomatic complexity: 19 Second operand 3 states. [2019-12-07 15:00:35,454 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 34 states and 47 transitions. cyclomatic complexity: 19. Second operand 3 states. Result 62 states and 84 transitions. Complement of second has 5 states. [2019-12-07 15:00:35,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 15:00:35,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 15:00:35,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2019-12-07 15:00:35,455 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 6 letters. Loop has 3 letters. [2019-12-07 15:00:35,455 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:00:35,455 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 9 letters. Loop has 3 letters. [2019-12-07 15:00:35,455 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:00:35,455 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 6 letters. Loop has 6 letters. [2019-12-07 15:00:35,456 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:00:35,456 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 84 transitions. [2019-12-07 15:00:35,457 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2019-12-07 15:00:35,458 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 59 states and 80 transitions. [2019-12-07 15:00:35,458 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 55 [2019-12-07 15:00:35,458 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 56 [2019-12-07 15:00:35,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 80 transitions. [2019-12-07 15:00:35,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:00:35,459 INFO L688 BuchiCegarLoop]: Abstraction has 59 states and 80 transitions. [2019-12-07 15:00:35,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states and 80 transitions. [2019-12-07 15:00:35,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 37. [2019-12-07 15:00:35,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-12-07 15:00:35,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2019-12-07 15:00:35,462 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 51 transitions. [2019-12-07 15:00:35,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:00:35,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:00:35,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:00:35,462 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand 3 states. [2019-12-07 15:00:35,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:00:35,497 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2019-12-07 15:00:35,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:00:35,497 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 46 transitions. [2019-12-07 15:00:35,498 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2019-12-07 15:00:35,498 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 46 transitions. [2019-12-07 15:00:35,498 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2019-12-07 15:00:35,499 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2019-12-07 15:00:35,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 46 transitions. [2019-12-07 15:00:35,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 15:00:35,499 INFO L688 BuchiCegarLoop]: Abstraction has 35 states and 46 transitions. [2019-12-07 15:00:35,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 46 transitions. [2019-12-07 15:00:35,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2019-12-07 15:00:35,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-07 15:00:35,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2019-12-07 15:00:35,502 INFO L711 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2019-12-07 15:00:35,502 INFO L591 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2019-12-07 15:00:35,502 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 15:00:35,502 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 41 transitions. [2019-12-07 15:00:35,502 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2019-12-07 15:00:35,503 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:00:35,503 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:00:35,503 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-12-07 15:00:35,503 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 15:00:35,503 INFO L794 eck$LassoCheckResult]: Stem: 654#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 651#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 628#L69 base2flt_#res := base2flt_~__retres4~0; 629#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 648#L19-1 assume !(0 == base2flt_~m % 4294967296); 636#L25-1 assume base2flt_~m % 4294967296 < 16777216; 637#L37-3 [2019-12-07 15:00:35,504 INFO L796 eck$LassoCheckResult]: Loop: 637#L37-3 assume !false; 646#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 647#L37-2 assume base2flt_~m % 4294967296 < 16777216; 637#L37-3 [2019-12-07 15:00:35,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:00:35,504 INFO L82 PathProgramCache]: Analyzing trace with hash 921737673, now seen corresponding path program 1 times [2019-12-07 15:00:35,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:00:35,504 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277423255] [2019-12-07 15:00:35,505 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:00:35,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:00:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:00:35,521 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:00:35,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:00:35,521 INFO L82 PathProgramCache]: Analyzing trace with hash 110419, now seen corresponding path program 1 times [2019-12-07 15:00:35,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:00:35,521 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920276592] [2019-12-07 15:00:35,522 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:00:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:00:35,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:00:35,528 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:00:35,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:00:35,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1761173643, now seen corresponding path program 1 times [2019-12-07 15:00:35,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:00:35,528 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443264708] [2019-12-07 15:00:35,529 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:00:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:00:35,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:00:35,550 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:00:35,564 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:00:35,564 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:00:35,564 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:00:35,564 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:00:35,565 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 15:00:35,565 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:35,565 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:00:35,565 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:00:35,565 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration3_Loop [2019-12-07 15:00:35,565 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:00:35,565 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:00:35,566 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:00:35,570 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:00:35,617 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:00:35,617 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:35,620 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:00:35,620 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:00:35,625 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:00:35,625 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_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:35,628 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:00:35,628 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:35,641 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 15:00:35,641 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:00:35,646 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 15:00:35,647 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:00:35,647 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:00:35,647 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:00:35,647 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:00:35,647 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 15:00:35,647 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:35,647 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:00:35,647 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:00:35,647 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration3_Loop [2019-12-07 15:00:35,647 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:00:35,647 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:00:35,649 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:00:35,653 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:00:35,689 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:00:35,689 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:35,692 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:00:35,693 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:00:35,693 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:00:35,693 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:00:35,694 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:00:35,694 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:00:35,695 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:00:35,695 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:00:35,697 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:35,701 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:00:35,702 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:00:35,702 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:00:35,702 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:00:35,702 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:00:35,702 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:00:35,703 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:00:35,703 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:00:35,705 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 15:00:35,707 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 15:00:35,707 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_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:35,709 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 15:00:35,710 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 15:00:35,710 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 15:00:35,710 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2019-12-07 15:00:35,711 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 15:00:35,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:00:35,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:00:35,736 INFO L264 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:00:35,736 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:00:35,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:00:35,740 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 15:00:35,740 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:00:35,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:00:35,754 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 15:00:35,754 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 41 transitions. cyclomatic complexity: 15 Second operand 4 states. [2019-12-07 15:00:35,763 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 41 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 59 states and 78 transitions. Complement of second has 5 states. [2019-12-07 15:00:35,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 15:00:35,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 15:00:35,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2019-12-07 15:00:35,764 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 6 letters. Loop has 3 letters. [2019-12-07 15:00:35,764 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:00:35,764 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 3 letters. [2019-12-07 15:00:35,764 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:00:35,764 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 6 letters. Loop has 6 letters. [2019-12-07 15:00:35,764 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:00:35,764 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 59 states and 78 transitions. [2019-12-07 15:00:35,765 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2019-12-07 15:00:35,766 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 59 states to 56 states and 74 transitions. [2019-12-07 15:00:35,766 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 50 [2019-12-07 15:00:35,766 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2019-12-07 15:00:35,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 74 transitions. [2019-12-07 15:00:35,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:00:35,766 INFO L688 BuchiCegarLoop]: Abstraction has 56 states and 74 transitions. [2019-12-07 15:00:35,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 74 transitions. [2019-12-07 15:00:35,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 34. [2019-12-07 15:00:35,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-07 15:00:35,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2019-12-07 15:00:35,768 INFO L711 BuchiCegarLoop]: Abstraction has 34 states and 45 transitions. [2019-12-07 15:00:35,768 INFO L591 BuchiCegarLoop]: Abstraction has 34 states and 45 transitions. [2019-12-07 15:00:35,768 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 15:00:35,768 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 45 transitions. [2019-12-07 15:00:35,769 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2019-12-07 15:00:35,769 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:00:35,769 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:00:35,769 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:00:35,769 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 15:00:35,769 INFO L794 eck$LassoCheckResult]: Stem: 793#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; 790#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 766#L69 base2flt_#res := base2flt_~__retres4~0; 767#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; 787#L19-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 778#L69-1 base2flt_#res := base2flt_~__retres4~0; 779#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; 782#L19-2 assume !(0 == base2flt_~m % 4294967296); 772#L25-2 assume !(base2flt_~m % 4294967296 < 16777216); 765#L47-8 [2019-12-07 15:00:35,769 INFO L796 eck$LassoCheckResult]: Loop: 765#L47-8 assume !false; 788#L48-2 assume base2flt_~m % 4294967296 >= 33554432; 763#L49-2 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 765#L47-8 [2019-12-07 15:00:35,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:00:35,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1760951196, now seen corresponding path program 1 times [2019-12-07 15:00:35,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:00:35,770 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299019666] [2019-12-07 15:00:35,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:00:35,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:00:35,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:00:35,799 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299019666] [2019-12-07 15:00:35,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:00:35,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 15:00:35,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771916190] [2019-12-07 15:00:35,799 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 15:00:35,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:00:35,800 INFO L82 PathProgramCache]: Analyzing trace with hash 198737, now seen corresponding path program 1 times [2019-12-07 15:00:35,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:00:35,800 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608214754] [2019-12-07 15:00:35,800 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:00:35,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:00:35,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:00:35,806 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:00:35,819 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:00:35,819 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:00:35,819 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:00:35,819 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:00:35,819 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 15:00:35,819 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:35,819 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:00:35,819 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:00:35,819 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration4_Loop [2019-12-07 15:00:35,819 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:00:35,819 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:00:35,820 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:00:35,829 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:00:35,875 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:00:35,875 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:35,879 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:00:35,879 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:35,885 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 15:00:35,885 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:00:35,891 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 15:00:35,892 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:00:35,892 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:00:35,892 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:00:35,892 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:00:35,892 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 15:00:35,892 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:35,892 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:00:35,893 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:00:35,893 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration4_Loop [2019-12-07 15:00:35,893 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:00:35,893 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:00:35,893 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:00:35,897 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:00:35,940 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:00:35,941 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:35,943 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:00:35,944 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:00:35,944 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:00:35,944 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:00:35,944 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:00:35,944 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:00:35,945 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:00:35,945 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:00:35,947 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 15:00:35,948 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 15:00:35,948 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_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:35,951 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 15:00:35,951 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 15:00:35,951 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 15:00:35,951 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2019-12-07 15:00:35,953 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 15:00:35,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:00:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:00:35,969 INFO L264 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:00:35,969 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:00:35,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:00:35,973 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 15:00:35,973 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:00:35,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:00:35,974 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-12-07 15:00:35,974 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 45 transitions. cyclomatic complexity: 16 Second operand 3 states. [2019-12-07 15:00:35,982 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 34 states and 45 transitions. cyclomatic complexity: 16. Second operand 3 states. Result 51 states and 65 transitions. Complement of second has 5 states. [2019-12-07 15:00:35,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 15:00:35,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 15:00:35,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2019-12-07 15:00:35,982 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 3 letters. [2019-12-07 15:00:35,983 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:00:35,983 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 3 letters. [2019-12-07 15:00:35,983 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:00:35,983 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 6 letters. [2019-12-07 15:00:35,983 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:00:35,983 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 65 transitions. [2019-12-07 15:00:35,984 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2019-12-07 15:00:35,984 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 48 states and 61 transitions. [2019-12-07 15:00:35,984 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2019-12-07 15:00:35,985 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2019-12-07 15:00:35,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 61 transitions. [2019-12-07 15:00:35,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:00:35,985 INFO L688 BuchiCegarLoop]: Abstraction has 48 states and 61 transitions. [2019-12-07 15:00:35,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 61 transitions. [2019-12-07 15:00:35,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 37. [2019-12-07 15:00:35,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-12-07 15:00:35,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2019-12-07 15:00:35,987 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 49 transitions. [2019-12-07 15:00:35,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:00:35,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:00:35,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:00:35,988 INFO L87 Difference]: Start difference. First operand 37 states and 49 transitions. Second operand 3 states. [2019-12-07 15:00:36,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:00:36,017 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2019-12-07 15:00:36,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:00:36,017 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 52 transitions. [2019-12-07 15:00:36,017 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2019-12-07 15:00:36,018 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 41 states and 52 transitions. [2019-12-07 15:00:36,018 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2019-12-07 15:00:36,018 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2019-12-07 15:00:36,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 52 transitions. [2019-12-07 15:00:36,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:00:36,018 INFO L688 BuchiCegarLoop]: Abstraction has 41 states and 52 transitions. [2019-12-07 15:00:36,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 52 transitions. [2019-12-07 15:00:36,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2019-12-07 15:00:36,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-12-07 15:00:36,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2019-12-07 15:00:36,020 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2019-12-07 15:00:36,020 INFO L591 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2019-12-07 15:00:36,020 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-12-07 15:00:36,020 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 37 states and 48 transitions. [2019-12-07 15:00:36,021 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2019-12-07 15:00:36,021 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:00:36,021 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:00:36,021 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:00:36,021 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 15:00:36,021 INFO L794 eck$LassoCheckResult]: Stem: 1014#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; 1011#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 985#L69 base2flt_#res := base2flt_~__retres4~0; 986#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; 1007#L19-1 assume !(0 == base2flt_~m % 4294967296); 994#L25-1 assume base2flt_~m % 4294967296 < 16777216; 995#L37-3 assume !false; 1004#L28-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 998#L69-1 base2flt_#res := base2flt_~__retres4~0; 999#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; 1002#L19-2 assume !(0 == base2flt_~m % 4294967296); 991#L25-2 assume base2flt_~m % 4294967296 < 16777216; 993#L37-5 [2019-12-07 15:00:36,021 INFO L796 eck$LassoCheckResult]: Loop: 993#L37-5 assume !false; 1000#L28-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1001#L37-4 assume base2flt_~m % 4294967296 < 16777216; 993#L37-5 [2019-12-07 15:00:36,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:00:36,022 INFO L82 PathProgramCache]: Analyzing trace with hash -197167406, now seen corresponding path program 1 times [2019-12-07 15:00:36,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:00:36,022 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705304240] [2019-12-07 15:00:36,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:00:36,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:00:36,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:00:36,040 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705304240] [2019-12-07 15:00:36,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:00:36,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 15:00:36,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330998782] [2019-12-07 15:00:36,041 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 15:00:36,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:00:36,041 INFO L82 PathProgramCache]: Analyzing trace with hash 172978, now seen corresponding path program 1 times [2019-12-07 15:00:36,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:00:36,041 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668991938] [2019-12-07 15:00:36,041 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:00:36,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:00:36,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:00:36,046 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:00:36,061 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:00:36,061 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:00:36,061 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:00:36,061 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:00:36,061 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 15:00:36,061 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:36,061 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:00:36,061 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:00:36,061 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration5_Loop [2019-12-07 15:00:36,061 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:00:36,061 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:00:36,062 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:00:36,066 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:00:36,102 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:00:36,102 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:36,105 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:00:36,105 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:00:36,111 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:00:36,111 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_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:36,115 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:00:36,115 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:36,122 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 15:00:36,122 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:00:36,127 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 15:00:36,128 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:00:36,128 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:00:36,128 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:00:36,128 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:00:36,128 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 15:00:36,129 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:36,129 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:00:36,129 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:00:36,129 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration5_Loop [2019-12-07 15:00:36,129 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:00:36,129 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:00:36,129 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:00:36,134 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:00:36,170 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:00:36,170 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:36,173 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:00:36,174 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:00:36,174 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:00:36,174 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:00:36,174 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:00:36,174 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:00:36,175 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:00:36,175 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:00:36,177 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:36,181 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:00:36,182 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:00:36,182 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:00:36,182 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:00:36,182 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:00:36,182 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:00:36,183 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:00:36,183 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:00:36,185 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 15:00:36,187 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 15:00:36,187 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_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:36,190 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 15:00:36,190 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 15:00:36,190 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 15:00:36,190 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2019-12-07 15:00:36,192 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 15:00:36,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:00:36,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:00:36,207 INFO L264 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:00:36,207 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:00:36,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:00:36,210 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 15:00:36,210 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:00:36,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:00:36,219 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 15:00:36,219 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 48 transitions. cyclomatic complexity: 16 Second operand 4 states. [2019-12-07 15:00:36,225 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 37 states and 48 transitions. cyclomatic complexity: 16. Second operand 4 states. Result 55 states and 69 transitions. Complement of second has 5 states. [2019-12-07 15:00:36,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 15:00:36,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 15:00:36,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2019-12-07 15:00:36,226 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 3 letters. [2019-12-07 15:00:36,226 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:00:36,226 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 15 letters. Loop has 3 letters. [2019-12-07 15:00:36,226 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:00:36,226 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 6 letters. [2019-12-07 15:00:36,226 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:00:36,226 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 55 states and 69 transitions. [2019-12-07 15:00:36,227 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2019-12-07 15:00:36,227 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 55 states to 52 states and 65 transitions. [2019-12-07 15:00:36,227 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2019-12-07 15:00:36,228 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2019-12-07 15:00:36,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 65 transitions. [2019-12-07 15:00:36,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:00:36,228 INFO L688 BuchiCegarLoop]: Abstraction has 52 states and 65 transitions. [2019-12-07 15:00:36,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 65 transitions. [2019-12-07 15:00:36,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2019-12-07 15:00:36,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-12-07 15:00:36,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 52 transitions. [2019-12-07 15:00:36,229 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 52 transitions. [2019-12-07 15:00:36,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:00:36,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 15:00:36,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:00:36,230 INFO L87 Difference]: Start difference. First operand 40 states and 52 transitions. Second operand 4 states. [2019-12-07 15:00:36,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:00:36,277 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2019-12-07 15:00:36,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:00:36,277 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 55 transitions. [2019-12-07 15:00:36,278 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-12-07 15:00:36,278 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 43 states and 54 transitions. [2019-12-07 15:00:36,278 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2019-12-07 15:00:36,278 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2019-12-07 15:00:36,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 54 transitions. [2019-12-07 15:00:36,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:00:36,278 INFO L688 BuchiCegarLoop]: Abstraction has 43 states and 54 transitions. [2019-12-07 15:00:36,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 54 transitions. [2019-12-07 15:00:36,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2019-12-07 15:00:36,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-12-07 15:00:36,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2019-12-07 15:00:36,280 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2019-12-07 15:00:36,280 INFO L591 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2019-12-07 15:00:36,280 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-12-07 15:00:36,280 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 51 transitions. [2019-12-07 15:00:36,280 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-12-07 15:00:36,280 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:00:36,280 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:00:36,281 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:00:36,281 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 15:00:36,281 INFO L794 eck$LassoCheckResult]: Stem: 1262#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; 1257#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1230#L69 base2flt_#res := base2flt_~__retres4~0; 1231#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; 1253#L19-1 assume !(0 == base2flt_~m % 4294967296); 1239#L25-1 assume base2flt_~m % 4294967296 < 16777216; 1240#L37-3 assume !false; 1251#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1252#L37-2 assume !(base2flt_~m % 4294967296 < 16777216); 1258#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; 1243#L69-1 base2flt_#res := base2flt_~__retres4~0; 1244#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; 1248#L19-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1227#L69-2 base2flt_#res := base2flt_~__retres4~0; 1241#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; 1249#L19-3 assume !(0 == base2flt_~m % 4294967296); 1234#L25-3 assume !(base2flt_~m % 4294967296 < 16777216); 1235#L47-11 [2019-12-07 15:00:36,281 INFO L796 eck$LassoCheckResult]: Loop: 1235#L47-11 assume !false; 1264#L48-3 assume base2flt_~m % 4294967296 >= 33554432; 1242#L49-3 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 1235#L47-11 [2019-12-07 15:00:36,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:00:36,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1360904017, now seen corresponding path program 1 times [2019-12-07 15:00:36,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:00:36,281 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163703924] [2019-12-07 15:00:36,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:00:36,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:00:36,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:00:36,314 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163703924] [2019-12-07 15:00:36,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:00:36,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 15:00:36,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496106568] [2019-12-07 15:00:36,315 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 15:00:36,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:00:36,315 INFO L82 PathProgramCache]: Analyzing trace with hash 261296, now seen corresponding path program 1 times [2019-12-07 15:00:36,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:00:36,315 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234428711] [2019-12-07 15:00:36,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:00:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:00:36,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:00:36,320 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:00:36,343 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:00:36,343 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:00:36,343 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:00:36,343 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:00:36,343 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 15:00:36,343 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:36,343 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:00:36,343 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:00:36,343 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration6_Loop [2019-12-07 15:00:36,344 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:00:36,344 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:00:36,344 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:00:36,348 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:00:36,400 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:00:36,400 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:36,403 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:00:36,403 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:36,410 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 15:00:36,410 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:00:36,415 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 15:00:36,417 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:00:36,417 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:00:36,417 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:00:36,417 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:00:36,417 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 15:00:36,417 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:36,417 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:00:36,417 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:00:36,417 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration6_Loop [2019-12-07 15:00:36,417 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:00:36,417 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:00:36,418 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:00:36,422 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:00:36,465 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:00:36,465 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:36,468 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:00:36,469 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:00:36,469 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:00:36,470 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:00:36,470 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:00:36,470 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:00:36,470 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:00:36,470 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:00:36,472 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 15:00:36,474 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 15:00:36,474 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_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:36,476 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 15:00:36,477 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 15:00:36,477 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 15:00:36,477 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2019-12-07 15:00:36,478 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 15:00:36,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:00:36,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:00:36,497 INFO L264 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:00:36,497 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:00:36,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:00:36,500 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 15:00:36,501 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:00:36,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:00:36,501 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-12-07 15:00:36,501 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 51 transitions. cyclomatic complexity: 16 Second operand 3 states. [2019-12-07 15:00:36,505 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 51 transitions. cyclomatic complexity: 16. Second operand 3 states. Result 43 states and 55 transitions. Complement of second has 4 states. [2019-12-07 15:00:36,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 15:00:36,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 15:00:36,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2019-12-07 15:00:36,505 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 17 letters. Loop has 3 letters. [2019-12-07 15:00:36,506 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:00:36,506 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 20 letters. Loop has 3 letters. [2019-12-07 15:00:36,506 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:00:36,506 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 17 letters. Loop has 6 letters. [2019-12-07 15:00:36,506 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:00:36,506 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 55 transitions. [2019-12-07 15:00:36,507 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 15:00:36,507 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 37 states and 47 transitions. [2019-12-07 15:00:36,507 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2019-12-07 15:00:36,507 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2019-12-07 15:00:36,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 47 transitions. [2019-12-07 15:00:36,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:00:36,507 INFO L688 BuchiCegarLoop]: Abstraction has 37 states and 47 transitions. [2019-12-07 15:00:36,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 47 transitions. [2019-12-07 15:00:36,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-12-07 15:00:36,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-12-07 15:00:36,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2019-12-07 15:00:36,509 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 47 transitions. [2019-12-07 15:00:36,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:00:36,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 15:00:36,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:00:36,509 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand 4 states. [2019-12-07 15:00:36,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:00:36,547 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2019-12-07 15:00:36,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:00:36,547 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 56 transitions. [2019-12-07 15:00:36,547 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 15:00:36,548 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 45 states and 56 transitions. [2019-12-07 15:00:36,548 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2019-12-07 15:00:36,548 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2019-12-07 15:00:36,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 56 transitions. [2019-12-07 15:00:36,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:00:36,548 INFO L688 BuchiCegarLoop]: Abstraction has 45 states and 56 transitions. [2019-12-07 15:00:36,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 56 transitions. [2019-12-07 15:00:36,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2019-12-07 15:00:36,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-12-07 15:00:36,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2019-12-07 15:00:36,549 INFO L711 BuchiCegarLoop]: Abstraction has 39 states and 50 transitions. [2019-12-07 15:00:36,549 INFO L591 BuchiCegarLoop]: Abstraction has 39 states and 50 transitions. [2019-12-07 15:00:36,549 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-12-07 15:00:36,550 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 50 transitions. [2019-12-07 15:00:36,550 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 15:00:36,550 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:00:36,550 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:00:36,550 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:00:36,550 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 15:00:36,550 INFO L794 eck$LassoCheckResult]: Stem: 1502#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; 1499#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1474#L69 base2flt_#res := base2flt_~__retres4~0; 1475#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; 1495#L19-1 assume !(0 == base2flt_~m % 4294967296); 1482#L25-1 assume base2flt_~m % 4294967296 < 16777216; 1483#L37-3 assume !false; 1493#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1494#L37-2 assume base2flt_~m % 4294967296 < 16777216; 1505#L37-3 assume !false; 1492#L28-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 1485#L69-1 base2flt_#res := base2flt_~__retres4~0; 1486#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; 1490#L19-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1471#L69-2 base2flt_#res := base2flt_~__retres4~0; 1484#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; 1491#L19-3 assume !(0 == base2flt_~m % 4294967296); 1478#L25-3 assume base2flt_~m % 4294967296 < 16777216; 1476#L37-7 [2019-12-07 15:00:36,551 INFO L796 eck$LassoCheckResult]: Loop: 1476#L37-7 assume !false; 1477#L28-3 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1501#L37-6 assume base2flt_~m % 4294967296 < 16777216; 1476#L37-7 [2019-12-07 15:00:36,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:00:36,551 INFO L82 PathProgramCache]: Analyzing trace with hash -377438794, now seen corresponding path program 1 times [2019-12-07 15:00:36,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:00:36,551 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322988668] [2019-12-07 15:00:36,551 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:00:36,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:00:36,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:00:36,572 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322988668] [2019-12-07 15:00:36,573 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940027284] [2019-12-07 15:00:36,573 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:00:36,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:00:36,599 INFO L264 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 15:00:36,599 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:00:36,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:00:36,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:00:36,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2019-12-07 15:00:36,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598831307] [2019-12-07 15:00:36,602 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 15:00:36,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:00:36,603 INFO L82 PathProgramCache]: Analyzing trace with hash 235537, now seen corresponding path program 1 times [2019-12-07 15:00:36,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:00:36,603 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362132417] [2019-12-07 15:00:36,603 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:00:36,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:00:36,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:00:36,606 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:00:36,618 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:00:36,618 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:00:36,618 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:00:36,618 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:00:36,618 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 15:00:36,618 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:36,618 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:00:36,618 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:00:36,618 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration7_Loop [2019-12-07 15:00:36,618 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:00:36,618 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:00:36,619 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:00:36,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:00:36,662 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:00:36,662 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:36,674 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:00:36,674 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:00:36,679 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:00:36,679 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_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:36,683 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:00:36,683 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:36,688 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 15:00:36,688 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:00:36,693 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 15:00:36,695 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:00:36,695 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:00:36,695 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:00:36,695 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:00:36,695 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 15:00:36,695 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:36,695 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:00:36,695 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:00:36,695 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration7_Loop [2019-12-07 15:00:36,695 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:00:36,695 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:00:36,696 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:00:36,700 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:00:36,738 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:00:36,738 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:36,740 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:00:36,741 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:00:36,741 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:00:36,742 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:00:36,742 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:00:36,742 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:00:36,742 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:00:36,743 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:00:36,744 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:36,748 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:00:36,749 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:00:36,749 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:00:36,749 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:00:36,749 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:00:36,749 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:00:36,750 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:00:36,750 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:00:36,751 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 15:00:36,753 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 15:00:36,753 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_2002814e-6e54-45ac-aa7c-007a8d403640/bin/uautomizer/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:00:36,756 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 15:00:36,756 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 15:00:36,756 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 15:00:36,756 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2019-12-07 15:00:36,758 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 15:00:36,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:00:36,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:00:36,775 INFO L264 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:00:36,776 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:00:36,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:00:36,779 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 15:00:36,779 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:00:36,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:00:36,788 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 15:00:36,788 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 50 transitions. cyclomatic complexity: 15 Second operand 4 states. [2019-12-07 15:00:36,792 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 50 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 43 states and 54 transitions. Complement of second has 4 states. [2019-12-07 15:00:36,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 15:00:36,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 15:00:36,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2019-12-07 15:00:36,793 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 18 letters. Loop has 3 letters. [2019-12-07 15:00:36,793 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:00:36,793 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 21 letters. Loop has 3 letters. [2019-12-07 15:00:36,793 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:00:36,793 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 18 letters. Loop has 6 letters. [2019-12-07 15:00:36,793 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:00:36,793 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 54 transitions. [2019-12-07 15:00:36,794 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 15:00:36,794 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 0 states and 0 transitions. [2019-12-07 15:00:36,794 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 15:00:36,794 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 15:00:36,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 15:00:36,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 15:00:36,794 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 15:00:36,794 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 15:00:36,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:00:36,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 15:00:36,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 15:00:36,794 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2019-12-07 15:00:36,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:00:36,794 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-12-07 15:00:36,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 15:00:36,795 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-12-07 15:00:36,795 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 15:00:36,795 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 15:00:36,795 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 15:00:36,795 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 15:00:36,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 15:00:36,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 15:00:36,795 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 15:00:36,795 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 15:00:36,795 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 15:00:36,795 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-12-07 15:00:36,795 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 15:00:36,795 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 15:00:36,795 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 15:00:36,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 03:00:36 BoogieIcfgContainer [2019-12-07 15:00:36,800 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 15:00:36,800 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:00:36,800 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:00:36,800 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:00:36,800 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:00:34" (3/4) ... [2019-12-07 15:00:36,802 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 15:00:36,802 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:00:36,804 INFO L168 Benchmark]: Toolchain (without parser) took 2835.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -165.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:00:36,804 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:00:36,805 INFO L168 Benchmark]: CACSL2BoogieTranslator took 217.24 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 90.7 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -146.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-12-07 15:00:36,805 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.66 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 15:00:36,806 INFO L168 Benchmark]: Boogie Preprocessor took 21.51 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:00:36,806 INFO L168 Benchmark]: RCFGBuilder took 281.58 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. [2019-12-07 15:00:36,807 INFO L168 Benchmark]: BuchiAutomizer took 2280.93 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 65.5 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -57.6 MB). Peak memory consumption was 7.9 MB. Max. memory is 11.5 GB. [2019-12-07 15:00:36,807 INFO L168 Benchmark]: Witness Printer took 2.50 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. [2019-12-07 15:00:36,810 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 217.24 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 90.7 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -146.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.66 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.51 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 281.58 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2280.93 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 65.5 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -57.6 MB). Peak memory consumption was 7.9 MB. Max. memory is 11.5 GB. * Witness Printer took 2.50 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 13 terminating modules (6 trivial, 7 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * e + 253 and consists of 4 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. 6 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.2s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 1.6s. Construction of modules took 0.1s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 9. Automata minimization 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 95 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 40 states and ocurred in iteration 5. Nontrivial modules had stage [7, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 541 SDtfs, 372 SDslu, 116 SDs, 0 SdLazy, 207 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT6 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf95 lsp57 ukn100 mio100 lsp100 div575 bol100 ite100 ukn100 eq132 hnf44 smp92 dnf100 smp100 tf105 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 10ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...