./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 94419cb5ed7b14b2ed497048686126b88cc40ca2 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 20:38:11,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:38:11,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:38:11,214 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:38:11,214 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:38:11,215 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:38:11,217 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:38:11,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:38:11,221 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:38:11,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:38:11,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:38:11,224 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:38:11,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:38:11,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:38:11,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:38:11,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:38:11,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:38:11,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:38:11,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:38:11,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:38:11,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:38:11,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:38:11,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:38:11,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:38:11,244 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:38:11,244 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:38:11,244 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:38:11,245 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:38:11,246 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:38:11,247 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:38:11,247 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:38:11,248 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:38:11,249 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:38:11,250 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:38:11,251 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:38:11,251 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:38:11,252 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:38:11,252 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:38:11,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:38:11,253 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:38:11,254 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:38:11,255 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-28 20:38:11,271 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:38:11,272 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:38:11,273 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:38:11,273 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:38:11,273 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:38:11,274 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 20:38:11,274 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 20:38:11,274 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 20:38:11,274 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 20:38:11,274 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 20:38:11,275 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 20:38:11,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:38:11,275 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 20:38:11,275 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:38:11,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:38:11,276 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 20:38:11,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:38:11,276 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 20:38:11,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 20:38:11,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 20:38:11,277 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 20:38:11,277 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 20:38:11,277 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 20:38:11,277 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:38:11,278 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 20:38:11,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:38:11,278 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:38:11,278 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 20:38:11,279 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:38:11,279 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:38:11,279 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:38:11,279 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 20:38:11,280 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 20:38:11,280 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> 94419cb5ed7b14b2ed497048686126b88cc40ca2 [2019-11-28 20:38:11,573 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:38:11,587 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:38:11,590 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:38:11,592 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:38:11,592 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:38:11,593 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c [2019-11-28 20:38:11,650 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d54d23ae8/5cfa3ff56d4f4b1184ea3272ee875269/FLAG9e16d0a59 [2019-11-28 20:38:12,130 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:38:12,130 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c [2019-11-28 20:38:12,144 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d54d23ae8/5cfa3ff56d4f4b1184ea3272ee875269/FLAG9e16d0a59 [2019-11-28 20:38:12,460 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d54d23ae8/5cfa3ff56d4f4b1184ea3272ee875269 [2019-11-28 20:38:12,464 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:38:12,465 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 20:38:12,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:38:12,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:38:12,470 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:38:12,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:38:12" (1/1) ... [2019-11-28 20:38:12,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dccbe97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:12, skipping insertion in model container [2019-11-28 20:38:12,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:38:12" (1/1) ... [2019-11-28 20:38:12,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:38:12,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:38:12,843 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:38:12,850 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:38:12,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:38:12,997 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:38:12,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:12 WrapperNode [2019-11-28 20:38:12,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:38:12,999 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 20:38:13,000 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 20:38:13,000 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 20:38:13,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:12" (1/1) ... [2019-11-28 20:38:13,016 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:12" (1/1) ... [2019-11-28 20:38:13,056 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 20:38:13,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:38:13,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:38:13,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:38:13,069 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:12" (1/1) ... [2019-11-28 20:38:13,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:12" (1/1) ... [2019-11-28 20:38:13,072 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:12" (1/1) ... [2019-11-28 20:38:13,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:12" (1/1) ... [2019-11-28 20:38:13,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:12" (1/1) ... [2019-11-28 20:38:13,088 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:12" (1/1) ... [2019-11-28 20:38:13,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:12" (1/1) ... [2019-11-28 20:38:13,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:38:13,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:38:13,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:38:13,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:38:13,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:13,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:38:13,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:38:13,682 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:38:13,682 INFO L287 CfgBuilder]: Removed 30 assume(true) statements. [2019-11-28 20:38:13,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:38:13 BoogieIcfgContainer [2019-11-28 20:38:13,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:38:13,684 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 20:38:13,685 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 20:38:13,688 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 20:38:13,689 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:38:13,689 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 08:38:12" (1/3) ... [2019-11-28 20:38:13,690 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2fb5e087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 08:38:13, skipping insertion in model container [2019-11-28 20:38:13,691 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:38:13,691 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:12" (2/3) ... [2019-11-28 20:38:13,691 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2fb5e087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 08:38:13, skipping insertion in model container [2019-11-28 20:38:13,691 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:38:13,692 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:38:13" (3/3) ... [2019-11-28 20:38:13,693 INFO L371 chiAutomizerObserver]: Analyzing ICFG soft_float_4-2a.c.cil.c [2019-11-28 20:38:13,739 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 20:38:13,739 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 20:38:13,739 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 20:38:13,740 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:38:13,741 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:38:13,741 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 20:38:13,741 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:38:13,741 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 20:38:13,757 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 72 states. [2019-11-28 20:38:13,784 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2019-11-28 20:38:13,784 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:38:13,785 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:38:13,791 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-28 20:38:13,792 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 20:38:13,792 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 20:38:13,792 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 72 states. [2019-11-28 20:38:13,798 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2019-11-28 20:38:13,800 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:38:13,800 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:38:13,801 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-28 20:38:13,801 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 20:38:13,810 INFO L794 eck$LassoCheckResult]: Stem: 36#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_#t~ret9, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add1~0, main_~r_add2~0, main_~zero~0, main_~tmp~2, main_~tmp___0~0, main_~__retres14~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet1;havoc main_#t~nondet1;main_~ea~2 := main_#t~nondet2;havoc main_#t~nondet2;havoc main_~b~0;main_~mb~2 := main_#t~nondet3;havoc main_#t~nondet3;main_~eb~2 := main_#t~nondet4;havoc main_#t~nondet4;havoc main_~r_add1~0;havoc main_~r_add2~0;havoc main_~zero~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~__retres14~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 58#L20true assume !(0 == base2flt_~m % 4294967296); 23#L26true assume !(base2flt_~m % 4294967296 < 16777216); 41#L48-2true [2019-11-28 20:38:13,810 INFO L796 eck$LassoCheckResult]: Loop: 41#L48-2true assume !false; 53#L49true assume base2flt_~m % 4294967296 >= 33554432; 70#L50true assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 41#L48-2true [2019-11-28 20:38:13,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:13,818 INFO L82 PathProgramCache]: Analyzing trace with hash 30973, now seen corresponding path program 1 times [2019-11-28 20:38:13,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:13,828 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772604808] [2019-11-28 20:38:13,828 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:13,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:13,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:38:13,997 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772604808] [2019-11-28 20:38:13,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:38:13,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-28 20:38:14,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067365886] [2019-11-28 20:38:14,005 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-28 20:38:14,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:14,006 INFO L82 PathProgramCache]: Analyzing trace with hash 73619, now seen corresponding path program 1 times [2019-11-28 20:38:14,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:14,007 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405897212] [2019-11-28 20:38:14,007 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:14,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:14,047 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:38:14,114 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:38:14,115 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:38:14,116 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:38:14,117 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:38:14,117 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:38:14,117 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:14,117 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:38:14,118 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:38:14,118 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration1_Loop [2019-11-28 20:38:14,119 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:38:14,119 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:38:14,152 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:38:14,170 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:38:14,317 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:38:14,318 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 20:38:14,327 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:38:14,327 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:14,339 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:38:14,340 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 20:38:14,351 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:38:14,354 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:38:14,354 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:38:14,355 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:38:14,355 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:38:14,355 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:38:14,355 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:14,355 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:38:14,355 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:38:14,355 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration1_Loop [2019-11-28 20:38:14,356 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:38:14,357 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:38:14,358 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:38:14,368 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:38:14,478 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:38:14,483 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:14,491 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:38:14,493 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:38:14,493 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:38:14,494 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:38:14,494 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:38:14,494 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:38:14,498 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:38:14,498 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 20:38:14,500 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:38:14,512 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 20:38:14,513 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:14,520 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:38:14,520 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:38:14,521 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:38:14,522 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2019-11-28 20:38:14,530 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 20:38:14,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:14,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:14,575 INFO L264 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:38:14,577 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:38:14,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:14,589 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:38:14,590 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:38:14,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:38:14,610 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-28 20:38:14,612 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 72 states. Second operand 3 states. [2019-11-28 20:38:14,702 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 72 states.. Second operand 3 states. Result 212 states and 334 transitions. Complement of second has 6 states. [2019-11-28 20:38:14,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 20:38:14,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 20:38:14,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 219 transitions. [2019-11-28 20:38:14,710 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 219 transitions. Stem has 3 letters. Loop has 3 letters. [2019-11-28 20:38:14,711 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:14,712 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 219 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-28 20:38:14,712 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:14,713 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 219 transitions. Stem has 3 letters. Loop has 6 letters. [2019-11-28 20:38:14,713 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:14,715 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 212 states and 334 transitions. [2019-11-28 20:38:14,738 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2019-11-28 20:38:14,746 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 212 states to 56 states and 81 transitions. [2019-11-28 20:38:14,748 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 52 [2019-11-28 20:38:14,749 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2019-11-28 20:38:14,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 81 transitions. [2019-11-28 20:38:14,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:38:14,751 INFO L688 BuchiCegarLoop]: Abstraction has 56 states and 81 transitions. [2019-11-28 20:38:14,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 81 transitions. [2019-11-28 20:38:14,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 45. [2019-11-28 20:38:14,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-28 20:38:14,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 69 transitions. [2019-11-28 20:38:14,792 INFO L711 BuchiCegarLoop]: Abstraction has 45 states and 69 transitions. [2019-11-28 20:38:14,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:38:14,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:38:14,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:38:14,797 INFO L87 Difference]: Start difference. First operand 45 states and 69 transitions. Second operand 3 states. [2019-11-28 20:38:14,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:38:14,851 INFO L93 Difference]: Finished difference Result 23 states and 30 transitions. [2019-11-28 20:38:14,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:38:14,852 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2019-11-28 20:38:14,856 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2019-11-28 20:38:14,856 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 23 states and 30 transitions. [2019-11-28 20:38:14,860 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2019-11-28 20:38:14,861 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2019-11-28 20:38:14,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 30 transitions. [2019-11-28 20:38:14,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 20:38:14,863 INFO L688 BuchiCegarLoop]: Abstraction has 23 states and 30 transitions. [2019-11-28 20:38:14,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 30 transitions. [2019-11-28 20:38:14,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-28 20:38:14,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-28 20:38:14,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2019-11-28 20:38:14,867 INFO L711 BuchiCegarLoop]: Abstraction has 23 states and 30 transitions. [2019-11-28 20:38:14,867 INFO L591 BuchiCegarLoop]: Abstraction has 23 states and 30 transitions. [2019-11-28 20:38:14,868 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 20:38:14,868 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 30 transitions. [2019-11-28 20:38:14,871 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2019-11-28 20:38:14,871 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:38:14,872 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:38:14,872 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-28 20:38:14,872 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 20:38:14,873 INFO L794 eck$LassoCheckResult]: Stem: 413#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_#t~ret9, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add1~0, main_~r_add2~0, main_~zero~0, main_~tmp~2, main_~tmp___0~0, main_~__retres14~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet1;havoc main_#t~nondet1;main_~ea~2 := main_#t~nondet2;havoc main_#t~nondet2;havoc main_~b~0;main_~mb~2 := main_#t~nondet3;havoc main_#t~nondet3;main_~eb~2 := main_#t~nondet4;havoc main_#t~nondet4;havoc main_~r_add1~0;havoc main_~r_add2~0;havoc main_~zero~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~__retres14~0;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; 412#L20 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 403#L70 base2flt_#res := base2flt_~__retres4~0; 404#L71 main_#t~ret5 := base2flt_#res;main_~zero~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; 409#L20-1 assume !(0 == base2flt_~m % 4294967296); 411#L26-1 assume !(base2flt_~m % 4294967296 < 16777216); 406#L48-5 [2019-11-28 20:38:14,873 INFO L796 eck$LassoCheckResult]: Loop: 406#L48-5 assume !false; 398#L49-1 assume base2flt_~m % 4294967296 >= 33554432; 400#L50-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 406#L48-5 [2019-11-28 20:38:14,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:14,873 INFO L82 PathProgramCache]: Analyzing trace with hash 921737699, now seen corresponding path program 1 times [2019-11-28 20:38:14,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:14,874 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111089463] [2019-11-28 20:38:14,874 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:14,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:14,918 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:38:14,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:14,922 INFO L82 PathProgramCache]: Analyzing trace with hash 136178, now seen corresponding path program 1 times [2019-11-28 20:38:14,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:14,923 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998791780] [2019-11-28 20:38:14,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:14,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:14,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:14,940 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:38:14,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:14,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1761973968, now seen corresponding path program 1 times [2019-11-28 20:38:14,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:14,942 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847716779] [2019-11-28 20:38:14,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:14,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:14,995 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:38:15,019 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:38:15,020 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:38:15,020 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:38:15,020 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:38:15,020 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:38:15,020 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:15,021 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:38:15,021 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:38:15,021 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration2_Loop [2019-11-28 20:38:15,021 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:38:15,021 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:38:15,022 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:38:15,039 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:38:15,143 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:38:15,143 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:15,159 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:38:15,159 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:15,168 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:38:15,168 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:15,186 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:38:15,187 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:15,209 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:38:15,209 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:15,225 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:38:15,227 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:38:15,228 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:38:15,228 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:38:15,228 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:38:15,228 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:38:15,228 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:15,228 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:38:15,229 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:38:15,229 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration2_Loop [2019-11-28 20:38:15,229 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:38:15,229 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:38:15,230 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:38:15,244 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:38:15,337 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:38:15,337 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 20:38:15,347 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:38:15,349 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:38:15,349 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:38:15,349 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:38:15,349 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:38:15,349 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:38:15,353 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:38:15,354 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 20:38:15,360 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 20:38:15,370 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:38:15,372 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:38:15,372 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:38:15,372 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:38:15,372 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:38:15,372 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:38:15,374 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:38:15,374 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 20:38:15,377 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:38:15,380 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 20:38:15,380 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 20:38:15,391 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:38:15,392 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:38:15,392 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:38:15,392 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2019-11-28 20:38:15,399 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 20:38:15,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:15,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:15,439 INFO L264 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:38:15,440 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:38:15,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:15,447 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:38:15,447 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:38:15,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:38:15,450 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-28 20:38:15,451 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 30 transitions. cyclomatic complexity: 11 Second operand 3 states. [2019-11-28 20:38:15,475 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 30 transitions. cyclomatic complexity: 11. Second operand 3 states. Result 40 states and 50 transitions. Complement of second has 5 states. [2019-11-28 20:38:15,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 20:38:15,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 20:38:15,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 32 transitions. [2019-11-28 20:38:15,480 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 32 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-28 20:38:15,481 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:15,481 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 32 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-28 20:38:15,481 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:15,481 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 32 transitions. Stem has 6 letters. Loop has 6 letters. [2019-11-28 20:38:15,481 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:15,482 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 50 transitions. [2019-11-28 20:38:15,483 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2019-11-28 20:38:15,484 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 37 states and 46 transitions. [2019-11-28 20:38:15,484 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2019-11-28 20:38:15,484 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2019-11-28 20:38:15,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 46 transitions. [2019-11-28 20:38:15,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:38:15,486 INFO L688 BuchiCegarLoop]: Abstraction has 37 states and 46 transitions. [2019-11-28 20:38:15,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 46 transitions. [2019-11-28 20:38:15,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 26. [2019-11-28 20:38:15,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-28 20:38:15,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2019-11-28 20:38:15,489 INFO L711 BuchiCegarLoop]: Abstraction has 26 states and 34 transitions. [2019-11-28 20:38:15,489 INFO L591 BuchiCegarLoop]: Abstraction has 26 states and 34 transitions. [2019-11-28 20:38:15,489 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-28 20:38:15,489 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 34 transitions. [2019-11-28 20:38:15,491 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2019-11-28 20:38:15,491 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:38:15,491 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:38:15,492 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-28 20:38:15,493 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 20:38:15,494 INFO L794 eck$LassoCheckResult]: Stem: 525#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_#t~ret9, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add1~0, main_~r_add2~0, main_~zero~0, main_~tmp~2, main_~tmp___0~0, main_~__retres14~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet1;havoc main_#t~nondet1;main_~ea~2 := main_#t~nondet2;havoc main_#t~nondet2;havoc main_~b~0;main_~mb~2 := main_#t~nondet3;havoc main_#t~nondet3;main_~eb~2 := main_#t~nondet4;havoc main_#t~nondet4;havoc main_~r_add1~0;havoc main_~r_add2~0;havoc main_~zero~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~__retres14~0;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; 524#L20 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 515#L70 base2flt_#res := base2flt_~__retres4~0; 516#L71 main_#t~ret5 := base2flt_#res;main_~zero~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; 521#L20-1 assume !(0 == base2flt_~m % 4294967296); 523#L26-1 assume base2flt_~m % 4294967296 < 16777216; 528#L38-3 [2019-11-28 20:38:15,494 INFO L796 eck$LassoCheckResult]: Loop: 528#L38-3 assume !false; 519#L29-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 520#L38-2 assume base2flt_~m % 4294967296 < 16777216; 528#L38-3 [2019-11-28 20:38:15,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:15,494 INFO L82 PathProgramCache]: Analyzing trace with hash 921737673, now seen corresponding path program 1 times [2019-11-28 20:38:15,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:15,495 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441608141] [2019-11-28 20:38:15,495 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:15,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:15,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:15,536 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:38:15,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:15,537 INFO L82 PathProgramCache]: Analyzing trace with hash 110419, now seen corresponding path program 1 times [2019-11-28 20:38:15,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:15,540 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797039078] [2019-11-28 20:38:15,540 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:15,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:15,564 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:38:15,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:15,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1761173643, now seen corresponding path program 1 times [2019-11-28 20:38:15,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:15,566 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082785279] [2019-11-28 20:38:15,566 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:15,619 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:38:15,645 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:38:15,645 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:38:15,645 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:38:15,646 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:38:15,646 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:38:15,646 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:15,646 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:38:15,646 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:38:15,647 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration3_Loop [2019-11-28 20:38:15,647 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:38:15,647 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:38:15,648 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:38:15,657 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:38:15,736 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:38:15,737 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:15,756 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:38:15,756 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:15,764 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:38:15,764 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:15,781 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:38:15,781 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:15,804 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:38:15,804 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:15,816 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:38:15,820 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:38:15,820 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:38:15,820 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:38:15,820 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:38:15,820 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:38:15,820 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:15,821 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:38:15,821 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:38:15,821 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration3_Loop [2019-11-28 20:38:15,821 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:38:15,821 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:38:15,826 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:38:15,834 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:38:15,911 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:38:15,911 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:15,929 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:38:15,931 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:38:15,931 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:38:15,931 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:38:15,931 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:38:15,931 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:38:15,934 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:38:15,934 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:15,939 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:15,956 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:38:15,958 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:38:15,958 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:38:15,958 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:38:15,959 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:38:15,959 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:38:15,962 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:38:15,962 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:15,966 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:38:15,970 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 20:38:15,970 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:15,989 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:38:15,989 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:38:15,990 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:38:15,990 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2019-11-28 20:38:15,992 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:16,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:16,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:16,028 INFO L264 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:38:16,029 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:38:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:16,036 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:38:16,036 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:38:16,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:38:16,070 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-28 20:38:16,070 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 34 transitions. cyclomatic complexity: 12 Second operand 4 states. [2019-11-28 20:38:16,094 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 34 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 44 states and 55 transitions. Complement of second has 5 states. [2019-11-28 20:38:16,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 20:38:16,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 20:38:16,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 33 transitions. [2019-11-28 20:38:16,096 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-28 20:38:16,097 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:16,097 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-28 20:38:16,097 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:16,097 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 6 letters. Loop has 6 letters. [2019-11-28 20:38:16,098 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:16,098 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 55 transitions. [2019-11-28 20:38:16,099 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2019-11-28 20:38:16,102 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 41 states and 51 transitions. [2019-11-28 20:38:16,102 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2019-11-28 20:38:16,102 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2019-11-28 20:38:16,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 51 transitions. [2019-11-28 20:38:16,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:38:16,103 INFO L688 BuchiCegarLoop]: Abstraction has 41 states and 51 transitions. [2019-11-28 20:38:16,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 51 transitions. [2019-11-28 20:38:16,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 29. [2019-11-28 20:38:16,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-28 20:38:16,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2019-11-28 20:38:16,109 INFO L711 BuchiCegarLoop]: Abstraction has 29 states and 38 transitions. [2019-11-28 20:38:16,109 INFO L591 BuchiCegarLoop]: Abstraction has 29 states and 38 transitions. [2019-11-28 20:38:16,109 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-28 20:38:16,109 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states and 38 transitions. [2019-11-28 20:38:16,110 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-28 20:38:16,110 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:38:16,110 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:38:16,111 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:38:16,111 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 20:38:16,112 INFO L794 eck$LassoCheckResult]: Stem: 644#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_#t~ret9, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add1~0, main_~r_add2~0, main_~zero~0, main_~tmp~2, main_~tmp___0~0, main_~__retres14~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet1;havoc main_#t~nondet1;main_~ea~2 := main_#t~nondet2;havoc main_#t~nondet2;havoc main_~b~0;main_~mb~2 := main_#t~nondet3;havoc main_#t~nondet3;main_~eb~2 := main_#t~nondet4;havoc main_#t~nondet4;havoc main_~r_add1~0;havoc main_~r_add2~0;havoc main_~zero~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~__retres14~0;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; 643#L20 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 634#L70 base2flt_#res := base2flt_~__retres4~0; 635#L71 main_#t~ret5 := base2flt_#res;main_~zero~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; 640#L20-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 623#L70-1 base2flt_#res := base2flt_~__retres4~0; 624#L71-1 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; 633#L20-2 assume !(0 == base2flt_~m % 4294967296); 641#L26-2 assume !(base2flt_~m % 4294967296 < 16777216); 630#L48-8 [2019-11-28 20:38:16,112 INFO L796 eck$LassoCheckResult]: Loop: 630#L48-8 assume !false; 621#L49-2 assume base2flt_~m % 4294967296 >= 33554432; 622#L50-2 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 630#L48-8 [2019-11-28 20:38:16,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:16,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1760951196, now seen corresponding path program 1 times [2019-11-28 20:38:16,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:16,113 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415929405] [2019-11-28 20:38:16,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:16,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:16,159 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:38:16,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:16,159 INFO L82 PathProgramCache]: Analyzing trace with hash 198737, now seen corresponding path program 1 times [2019-11-28 20:38:16,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:16,160 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045400781] [2019-11-28 20:38:16,160 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:16,174 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:38:16,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:16,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1766695638, now seen corresponding path program 1 times [2019-11-28 20:38:16,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:16,178 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87009611] [2019-11-28 20:38:16,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:16,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:16,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:16,228 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:38:16,279 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:38:16,279 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:38:16,279 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:38:16,279 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:38:16,280 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:38:16,280 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:16,280 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:38:16,280 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:38:16,280 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration4_Loop [2019-11-28 20:38:16,280 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:38:16,280 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:38:16,281 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:38:16,296 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:38:16,466 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:38:16,467 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:16,472 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:38:16,472 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:16,490 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:38:16,491 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:16,499 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:38:16,501 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:38:16,501 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:38:16,501 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:38:16,501 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:38:16,501 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:38:16,502 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:16,502 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:38:16,502 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:38:16,502 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration4_Loop [2019-11-28 20:38:16,502 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:38:16,502 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:38:16,504 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:38:16,510 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:38:16,587 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:38:16,590 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:16,601 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:38:16,603 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:38:16,603 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:38:16,604 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:38:16,604 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:38:16,604 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:38:16,605 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:38:16,605 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:16,609 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:38:16,613 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 20:38:16,613 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:16,618 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:38:16,619 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:38:16,619 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:38:16,619 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Exception during sending of exit command (exit): Broken pipe [2019-11-28 20:38:16,622 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:16,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:16,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:16,690 INFO L264 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:38:16,691 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:38:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:16,702 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:38:16,703 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:38:16,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:38:16,704 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-28 20:38:16,704 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 29 states and 38 transitions. cyclomatic complexity: 13 Second operand 3 states. [2019-11-28 20:38:16,714 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 29 states and 38 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 32 states and 42 transitions. Complement of second has 4 states. [2019-11-28 20:38:16,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 20:38:16,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 20:38:16,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 30 transitions. [2019-11-28 20:38:16,715 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 30 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-28 20:38:16,715 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:16,716 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 30 transitions. Stem has 12 letters. Loop has 3 letters. [2019-11-28 20:38:16,716 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:16,716 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 30 transitions. Stem has 9 letters. Loop has 6 letters. [2019-11-28 20:38:16,716 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:16,716 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 42 transitions. [2019-11-28 20:38:16,718 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 20:38:16,718 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 26 states and 34 transitions. [2019-11-28 20:38:16,718 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2019-11-28 20:38:16,718 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2019-11-28 20:38:16,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 34 transitions. [2019-11-28 20:38:16,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:38:16,719 INFO L688 BuchiCegarLoop]: Abstraction has 26 states and 34 transitions. [2019-11-28 20:38:16,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 34 transitions. [2019-11-28 20:38:16,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-28 20:38:16,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-28 20:38:16,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2019-11-28 20:38:16,726 INFO L711 BuchiCegarLoop]: Abstraction has 26 states and 34 transitions. [2019-11-28 20:38:16,726 INFO L591 BuchiCegarLoop]: Abstraction has 26 states and 34 transitions. [2019-11-28 20:38:16,726 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-28 20:38:16,726 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 34 transitions. [2019-11-28 20:38:16,727 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 20:38:16,727 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:38:16,727 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:38:16,727 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:38:16,727 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 20:38:16,728 INFO L794 eck$LassoCheckResult]: Stem: 757#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_#t~ret9, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add1~0, main_~r_add2~0, main_~zero~0, main_~tmp~2, main_~tmp___0~0, main_~__retres14~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet1;havoc main_#t~nondet1;main_~ea~2 := main_#t~nondet2;havoc main_#t~nondet2;havoc main_~b~0;main_~mb~2 := main_#t~nondet3;havoc main_#t~nondet3;main_~eb~2 := main_#t~nondet4;havoc main_#t~nondet4;havoc main_~r_add1~0;havoc main_~r_add2~0;havoc main_~zero~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~__retres14~0;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; 756#L20 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 747#L70 base2flt_#res := base2flt_~__retres4~0; 748#L71 main_#t~ret5 := base2flt_#res;main_~zero~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; 753#L20-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 737#L70-1 base2flt_#res := base2flt_~__retres4~0; 738#L71-1 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; 746#L20-2 assume !(0 == base2flt_~m % 4294967296); 754#L26-2 assume base2flt_~m % 4294967296 < 16777216; 759#L38-5 [2019-11-28 20:38:16,728 INFO L796 eck$LassoCheckResult]: Loop: 759#L38-5 assume !false; 744#L29-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 745#L38-4 assume base2flt_~m % 4294967296 < 16777216; 759#L38-5 [2019-11-28 20:38:16,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:16,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1760951170, now seen corresponding path program 1 times [2019-11-28 20:38:16,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:16,729 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914012520] [2019-11-28 20:38:16,730 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:16,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:16,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:16,760 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:38:16,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:16,761 INFO L82 PathProgramCache]: Analyzing trace with hash 172978, now seen corresponding path program 1 times [2019-11-28 20:38:16,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:16,762 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126716078] [2019-11-28 20:38:16,762 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:16,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:16,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:16,768 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:38:16,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:16,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1765895313, now seen corresponding path program 1 times [2019-11-28 20:38:16,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:16,769 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164021144] [2019-11-28 20:38:16,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:16,793 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:38:16,812 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:38:16,812 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:38:16,812 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:38:16,812 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:38:16,812 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:38:16,812 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:16,812 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:38:16,812 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:38:16,813 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration5_Loop [2019-11-28 20:38:16,813 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:38:16,813 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:38:16,814 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:38:16,820 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:38:16,886 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:38:16,887 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 20:38:16,900 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:38:16,901 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 20:38:16,923 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:38:16,923 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 20:38:16,932 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:38:16,935 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:38:16,935 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:38:16,935 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:38:16,936 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:38:16,936 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:38:16,936 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:16,936 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:38:16,936 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:38:16,936 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration5_Loop [2019-11-28 20:38:16,936 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:38:16,936 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:38:16,937 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:38:16,946 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:38:17,008 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:38:17,008 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:17,023 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:38:17,025 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:38:17,025 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:38:17,025 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:38:17,026 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:38:17,026 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:38:17,027 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:38:17,027 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:17,030 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:38:17,034 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 20:38:17,034 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:17,039 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:38:17,039 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:38:17,039 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:38:17,039 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2019-11-28 20:38:17,042 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:17,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:17,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:17,083 INFO L264 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:38:17,084 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:38:17,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:17,091 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:38:17,091 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:38:17,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:38:17,111 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-28 20:38:17,111 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 34 transitions. cyclomatic complexity: 11 Second operand 4 states. [2019-11-28 20:38:17,119 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 34 transitions. cyclomatic complexity: 11. Second operand 4 states. Result 30 states and 38 transitions. Complement of second has 4 states. [2019-11-28 20:38:17,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 20:38:17,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 20:38:17,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 27 transitions. [2019-11-28 20:38:17,121 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 27 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-28 20:38:17,121 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:17,121 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 27 transitions. Stem has 12 letters. Loop has 3 letters. [2019-11-28 20:38:17,121 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:17,122 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 27 transitions. Stem has 9 letters. Loop has 6 letters. [2019-11-28 20:38:17,123 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:17,123 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 38 transitions. [2019-11-28 20:38:17,124 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 20:38:17,125 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 0 states and 0 transitions. [2019-11-28 20:38:17,126 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-28 20:38:17,126 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-28 20:38:17,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-28 20:38:17,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 20:38:17,126 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:38:17,126 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:38:17,126 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:38:17,126 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-28 20:38:17,127 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-28 20:38:17,127 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 20:38:17,127 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-28 20:38:17,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 08:38:17 BoogieIcfgContainer [2019-11-28 20:38:17,134 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 20:38:17,136 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:38:17,136 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:38:17,137 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:38:17,137 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:38:13" (3/4) ... [2019-11-28 20:38:17,142 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 20:38:17,142 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:38:17,145 INFO L168 Benchmark]: Toolchain (without parser) took 4678.50 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 221.8 MB). Free memory was 963.0 MB in the beginning and 1.1 GB in the end (delta: -138.0 MB). Peak memory consumption was 83.8 MB. Max. memory is 11.5 GB. [2019-11-28 20:38:17,146 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:38:17,147 INFO L168 Benchmark]: CACSL2BoogieTranslator took 532.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 963.0 MB in the beginning and 1.1 GB in the end (delta: -171.5 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. [2019-11-28 20:38:17,148 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.49 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:38:17,152 INFO L168 Benchmark]: Boogie Preprocessor took 37.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2019-11-28 20:38:17,153 INFO L168 Benchmark]: RCFGBuilder took 588.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 11.5 GB. [2019-11-28 20:38:17,159 INFO L168 Benchmark]: BuchiAutomizer took 3450.11 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 77.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -5.4 MB). Peak memory consumption was 71.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:38:17,159 INFO L168 Benchmark]: Witness Printer took 5.78 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. [2019-11-28 20:38:17,173 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 532.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 963.0 MB in the beginning and 1.1 GB in the end (delta: -171.5 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 57.49 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 588.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3450.11 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 77.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -5.4 MB). Peak memory consumption was 71.7 MB. Max. memory is 11.5 GB. * Witness Printer took 5.78 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24 B). Peak memory consumption was 24 B. 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 6 terminating modules (1 trivial, 5 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. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.4s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 2.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 34 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 29 states and ocurred in iteration 3. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 247 SDtfs, 215 SDslu, 26 SDs, 0 SdLazy, 38 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf95 lsp57 ukn100 mio100 lsp100 div583 bol100 ite100 ukn100 eq132 hnf44 smp92 dnf100 smp100 tf105 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 37ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...