./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 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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 9c532f6b804ad7a925ea1538a844c05d7db150e0 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:45:43,091 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:45:43,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:45:43,132 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:45:43,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:45:43,141 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:45:43,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:45:43,147 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:45:43,150 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:45:43,153 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:45:43,154 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:45:43,156 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:45:43,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:45:43,159 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:45:43,160 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:45:43,162 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:45:43,164 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:45:43,165 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:45:43,177 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:45:43,184 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:45:43,186 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:45:43,187 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:45:43,189 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:45:43,190 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:45:43,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:45:43,206 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:45:43,206 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:45:43,207 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:45:43,208 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:45:43,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:45:43,210 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:45:43,214 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:45:43,215 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:45:43,216 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:45:43,217 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:45:43,217 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:45:43,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:45:43,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:45:43,220 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:45:43,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:45:43,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:45:43,223 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-20 06:45:43,260 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:45:43,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:45:43,263 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:45:43,263 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:45:43,264 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:45:43,264 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 06:45:43,264 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 06:45:43,264 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 06:45:43,264 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 06:45:43,265 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 06:45:43,266 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 06:45:43,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:45:43,266 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:45:43,267 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:45:43,267 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:45:43,267 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:45:43,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:45:43,268 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 06:45:43,268 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 06:45:43,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 06:45:43,269 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:45:43,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:45:43,269 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 06:45:43,270 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:45:43,270 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 06:45:43,270 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:45:43,270 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:45:43,271 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 06:45:43,271 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:45:43,271 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:45:43,271 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:45:43,272 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 06:45:43,273 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 06:45:43,274 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 -> 9c532f6b804ad7a925ea1538a844c05d7db150e0 [2020-10-20 06:45:43,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:45:43,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:45:43,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:45:43,498 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:45:43,498 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:45:43,499 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c [2020-10-20 06:45:43,597 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a88b4b8d1/7eaece76a58142ff83977de4d7a85bee/FLAGf9e3e1664 [2020-10-20 06:45:44,150 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:45:44,151 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c [2020-10-20 06:45:44,159 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a88b4b8d1/7eaece76a58142ff83977de4d7a85bee/FLAGf9e3e1664 [2020-10-20 06:45:44,486 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a88b4b8d1/7eaece76a58142ff83977de4d7a85bee [2020-10-20 06:45:44,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:45:44,495 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:45:44,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:45:44,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:45:44,500 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:45:44,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:45:44" (1/1) ... [2020-10-20 06:45:44,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79c96c6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:45:44, skipping insertion in model container [2020-10-20 06:45:44,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:45:44" (1/1) ... [2020-10-20 06:45:44,513 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:45:44,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:45:44,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:45:44,872 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:45:44,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:45:44,933 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:45:44,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:45:44 WrapperNode [2020-10-20 06:45:44,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:45:44,935 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:45:44,935 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:45:44,935 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:45:44,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:45:44" (1/1) ... [2020-10-20 06:45:44,953 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:45:44" (1/1) ... [2020-10-20 06:45:44,987 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:45:44,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:45:44,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:45:44,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:45:44,997 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:45:44" (1/1) ... [2020-10-20 06:45:44,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:45:44" (1/1) ... [2020-10-20 06:45:45,001 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:45:44" (1/1) ... [2020-10-20 06:45:45,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:45:44" (1/1) ... [2020-10-20 06:45:45,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:45:44" (1/1) ... [2020-10-20 06:45:45,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:45:44" (1/1) ... [2020-10-20 06:45:45,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:45:44" (1/1) ... [2020-10-20 06:45:45,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:45:45,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:45:45,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:45:45,034 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:45:45,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:45:44" (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 [2020-10-20 06:45:45,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 06:45:45,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:45:45,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:45:45,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:45:45,638 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:45:45,639 INFO L298 CfgBuilder]: Removed 40 assume(true) statements. [2020-10-20 06:45:45,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:45:45 BoogieIcfgContainer [2020-10-20 06:45:45,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:45:45,642 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 06:45:45,642 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 06:45:45,646 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 06:45:45,647 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:45:45,648 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 06:45:44" (1/3) ... [2020-10-20 06:45:45,649 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@27988ca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:45:45, skipping insertion in model container [2020-10-20 06:45:45,649 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:45:45,649 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:45:44" (2/3) ... [2020-10-20 06:45:45,650 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@27988ca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:45:45, skipping insertion in model container [2020-10-20 06:45:45,650 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:45:45,650 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:45:45" (3/3) ... [2020-10-20 06:45:45,652 INFO L373 chiAutomizerObserver]: Analyzing ICFG soft_float_4-2a.c.cil.c [2020-10-20 06:45:45,705 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 06:45:45,706 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 06:45:45,706 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 06:45:45,706 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:45:45,706 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:45:45,707 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 06:45:45,707 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:45:45,707 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 06:45:45,731 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 82 states. [2020-10-20 06:45:45,757 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2020-10-20 06:45:45,758 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:45:45,758 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:45:45,764 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-20 06:45:45,764 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:45:45,764 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 06:45:45,764 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 82 states. [2020-10-20 06:45:45,771 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2020-10-20 06:45:45,772 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:45:45,772 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:45:45,772 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-20 06:45:45,772 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:45:45,779 INFO L794 eck$LassoCheckResult]: Stem: 40#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 14#L-1true havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add1~0, main_~r_add2~0, main_~zero~0, main_~tmp~2, main_~tmp___0~0, main_~__retres14~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_add1~0;havoc main_~r_add2~0;havoc main_~zero~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~__retres14~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 42#L22true assume !(0 == base2flt_~m % 4294967296); 69#L28true assume !(base2flt_~m % 4294967296 < 16777216); 63#L50-2true [2020-10-20 06:45:45,779 INFO L796 eck$LassoCheckResult]: Loop: 63#L50-2true assume !false; 11#L51true assume base2flt_~m % 4294967296 >= 33554432; 38#L52true assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 63#L50-2true [2020-10-20 06:45:45,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:45,785 INFO L82 PathProgramCache]: Analyzing trace with hash 925696, now seen corresponding path program 1 times [2020-10-20 06:45:45,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:45,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517554670] [2020-10-20 06:45:45,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:45,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:45,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:45:45,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517554670] [2020-10-20 06:45:45,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:45:45,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:45:45,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466443737] [2020-10-20 06:45:45,997 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-20 06:45:45,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:45,998 INFO L82 PathProgramCache]: Analyzing trace with hash 74612, now seen corresponding path program 1 times [2020-10-20 06:45:45,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:45,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468849985] [2020-10-20 06:45:45,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:46,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:46,013 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:46,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:46,021 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:46,039 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:45:46,093 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:45:46,094 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:45:46,095 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:45:46,095 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:45:46,095 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:45:46,096 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:46,096 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:45:46,096 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:45:46,096 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration1_Loop [2020-10-20 06:45:46,096 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:45:46,097 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:45:46,129 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:46,152 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:46,268 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:45:46,269 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) [2020-10-20 06:45:46,276 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:45:46,277 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 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) [2020-10-20 06:45:46,323 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:45:46,323 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:46,365 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:45:46,368 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:45:46,368 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:45:46,368 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:45:46,369 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:45:46,369 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:45:46,369 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:46,369 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:45:46,370 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:45:46,370 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration1_Loop [2020-10-20 06:45:46,370 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:45:46,370 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:45:46,372 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:46,379 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:46,478 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:45:46,484 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 [2020-10-20 06:45:46,495 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 [2020-10-20 06:45:46,497 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:45:46,497 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:45:46,498 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:45:46,498 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:45:46,498 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:45:46,501 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:45:46,502 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:45:46,506 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:45:46,517 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:45:46,518 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) [2020-10-20 06:45:46,536 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:45:46,536 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:45:46,538 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:45:46,540 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:46,580 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:45:46,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:46,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:45:46,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:45:46,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:46,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:45:46,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:45:46,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:45:46,685 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 [2020-10-20 06:45:46,703 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 82 states. Second operand 3 states. [2020-10-20 06:45:46,847 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 82 states.. Second operand 3 states. Result 237 states and 365 transitions. Complement of second has 6 states. [2020-10-20 06:45:46,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:45:46,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:45:46,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 237 transitions. [2020-10-20 06:45:46,858 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 237 transitions. Stem has 4 letters. Loop has 3 letters. [2020-10-20 06:45:46,859 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:46,860 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 237 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-20 06:45:46,864 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:46,865 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 237 transitions. Stem has 4 letters. Loop has 6 letters. [2020-10-20 06:45:46,865 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:46,866 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 237 states and 365 transitions. [2020-10-20 06:45:46,878 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2020-10-20 06:45:46,885 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 237 states to 57 states and 82 transitions. [2020-10-20 06:45:46,887 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 53 [2020-10-20 06:45:46,888 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54 [2020-10-20 06:45:46,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 82 transitions. [2020-10-20 06:45:46,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:45:46,889 INFO L691 BuchiCegarLoop]: Abstraction has 57 states and 82 transitions. [2020-10-20 06:45:46,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states and 82 transitions. [2020-10-20 06:45:46,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 46. [2020-10-20 06:45:46,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-20 06:45:46,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 70 transitions. [2020-10-20 06:45:46,924 INFO L714 BuchiCegarLoop]: Abstraction has 46 states and 70 transitions. [2020-10-20 06:45:46,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:45:46,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:45:46,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:45:46,929 INFO L87 Difference]: Start difference. First operand 46 states and 70 transitions. Second operand 3 states. [2020-10-20 06:45:46,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:45:46,977 INFO L93 Difference]: Finished difference Result 24 states and 31 transitions. [2020-10-20 06:45:46,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:45:46,978 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2020-10-20 06:45:46,979 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-10-20 06:45:46,980 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 24 states and 31 transitions. [2020-10-20 06:45:46,980 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2020-10-20 06:45:46,981 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2020-10-20 06:45:46,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 31 transitions. [2020-10-20 06:45:46,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:45:46,981 INFO L691 BuchiCegarLoop]: Abstraction has 24 states and 31 transitions. [2020-10-20 06:45:46,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 31 transitions. [2020-10-20 06:45:46,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-20 06:45:46,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-20 06:45:46,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2020-10-20 06:45:46,985 INFO L714 BuchiCegarLoop]: Abstraction has 24 states and 31 transitions. [2020-10-20 06:45:46,985 INFO L594 BuchiCegarLoop]: Abstraction has 24 states and 31 transitions. [2020-10-20 06:45:46,985 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 06:45:46,985 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 31 transitions. [2020-10-20 06:45:46,986 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-10-20 06:45:46,986 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:45:46,986 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:45:46,987 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:45:46,987 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:45:46,988 INFO L794 eck$LassoCheckResult]: Stem: 456#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 454#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, 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~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;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; 455#L22 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 451#L72 base2flt_#res := base2flt_~__retres4~0; 452#L73 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;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; 453#L22-1 assume !(0 == base2flt_~m % 4294967296); 438#L28-1 assume !(base2flt_~m % 4294967296 < 16777216); 439#L50-5 [2020-10-20 06:45:46,988 INFO L796 eck$LassoCheckResult]: Loop: 439#L50-5 assume !false; 446#L51-1 assume base2flt_~m % 4294967296 >= 33554432; 447#L52-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 439#L50-5 [2020-10-20 06:45:46,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:46,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1806627809, now seen corresponding path program 1 times [2020-10-20 06:45:46,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:46,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085099528] [2020-10-20 06:45:46,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:47,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:47,009 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:47,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:47,028 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:47,034 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:45:47,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:47,037 INFO L82 PathProgramCache]: Analyzing trace with hash 137171, now seen corresponding path program 1 times [2020-10-20 06:45:47,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:47,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113542053] [2020-10-20 06:45:47,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:47,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:47,055 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:47,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:47,073 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:47,076 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:45:47,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:47,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1013979123, now seen corresponding path program 1 times [2020-10-20 06:45:47,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:47,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397198021] [2020-10-20 06:45:47,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:47,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:47,146 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:47,178 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:47,189 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:45:47,219 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:45:47,219 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:45:47,219 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:45:47,220 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:45:47,220 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:45:47,220 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:47,220 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:45:47,220 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:45:47,220 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration2_Loop [2020-10-20 06:45:47,221 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:45:47,221 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:45:47,223 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:47,231 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:47,314 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:45:47,315 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) [2020-10-20 06:45:47,326 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:45:47,327 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 [2020-10-20 06:45:47,367 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:45:47,367 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) [2020-10-20 06:45:47,381 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:45:47,381 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) [2020-10-20 06:45:47,436 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:45:47,436 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 [2020-10-20 06:45:47,482 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:45:47,484 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:45:47,485 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:45:47,485 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:45:47,485 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:45:47,485 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:45:47,485 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:47,485 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:45:47,485 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:45:47,486 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration2_Loop [2020-10-20 06:45:47,486 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:45:47,486 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:45:47,488 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:47,496 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:47,603 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:45:47,603 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 [2020-10-20 06:45:47,607 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 [2020-10-20 06:45:47,609 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:45:47,609 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:45:47,609 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:45:47,610 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:45:47,610 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:45:47,612 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:45:47,612 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:45:47,615 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 [2020-10-20 06:45:47,660 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 [2020-10-20 06:45:47,663 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:45:47,663 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:45:47,663 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:45:47,664 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:45:47,664 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:45:47,668 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:45:47,668 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:45:47,673 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:45:47,681 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:45:47,681 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) [2020-10-20 06:45:47,686 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:45:47,687 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:45:47,687 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:45:47,687 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:47,730 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:45:47,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:47,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:47,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:45:47,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:45:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:47,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:45:47,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:45:47,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:45:47,774 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 [2020-10-20 06:45:47,774 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 31 transitions. cyclomatic complexity: 11 Second operand 3 states. [2020-10-20 06:45:47,788 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 31 transitions. cyclomatic complexity: 11. Second operand 3 states. Result 41 states and 51 transitions. Complement of second has 5 states. [2020-10-20 06:45:47,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:45:47,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:45:47,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 33 transitions. [2020-10-20 06:45:47,801 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-20 06:45:47,802 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:47,802 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 10 letters. Loop has 3 letters. [2020-10-20 06:45:47,802 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:47,803 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 7 letters. Loop has 6 letters. [2020-10-20 06:45:47,803 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:47,803 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 51 transitions. [2020-10-20 06:45:47,805 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2020-10-20 06:45:47,806 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 38 states and 47 transitions. [2020-10-20 06:45:47,806 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2020-10-20 06:45:47,807 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2020-10-20 06:45:47,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 47 transitions. [2020-10-20 06:45:47,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:45:47,807 INFO L691 BuchiCegarLoop]: Abstraction has 38 states and 47 transitions. [2020-10-20 06:45:47,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 47 transitions. [2020-10-20 06:45:47,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2020-10-20 06:45:47,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-20 06:45:47,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-10-20 06:45:47,819 INFO L714 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-10-20 06:45:47,819 INFO L594 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-10-20 06:45:47,819 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-20 06:45:47,820 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 35 transitions. [2020-10-20 06:45:47,820 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-10-20 06:45:47,822 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:45:47,822 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:45:47,823 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:45:47,824 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:45:47,824 INFO L794 eck$LassoCheckResult]: Stem: 574#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 572#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, 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~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;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; 573#L22 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 568#L72 base2flt_#res := base2flt_~__retres4~0; 569#L73 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;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; 571#L22-1 assume !(0 == base2flt_~m % 4294967296); 553#L28-1 assume base2flt_~m % 4294967296 < 16777216; 551#L40-3 [2020-10-20 06:45:47,824 INFO L796 eck$LassoCheckResult]: Loop: 551#L40-3 assume !false; 552#L31-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 555#L40-2 assume base2flt_~m % 4294967296 < 16777216; 551#L40-3 [2020-10-20 06:45:47,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:47,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1806627783, now seen corresponding path program 1 times [2020-10-20 06:45:47,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:47,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365253624] [2020-10-20 06:45:47,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:47,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:47,868 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:47,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:47,886 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:47,891 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:45:47,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:47,892 INFO L82 PathProgramCache]: Analyzing trace with hash 111412, now seen corresponding path program 1 times [2020-10-20 06:45:47,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:47,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123470727] [2020-10-20 06:45:47,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:47,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:47,897 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:47,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:47,900 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:47,902 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:45:47,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:47,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1013178798, now seen corresponding path program 1 times [2020-10-20 06:45:47,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:47,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819547648] [2020-10-20 06:45:47,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:47,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:47,920 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:47,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:47,937 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:47,942 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:45:47,969 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:45:47,970 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:45:47,970 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:45:47,970 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:45:47,970 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:45:47,970 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:47,970 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:45:47,970 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:45:47,970 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration3_Loop [2020-10-20 06:45:47,971 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:45:47,971 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:45:47,972 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:47,980 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:48,043 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:45:48,044 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) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:48,047 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:45:48,047 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:45:48,086 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:45:48,086 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) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:48,092 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:45:48,092 INFO L160 nArgumentSynthesizer]: Using integer mode. 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) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:48,132 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:45:48,132 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:45:48,183 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:45:48,185 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:45:48,185 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:45:48,185 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:45:48,185 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:45:48,185 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:45:48,185 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:48,186 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:45:48,186 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:45:48,186 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration3_Loop [2020-10-20 06:45:48,186 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:45:48,186 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:45:48,188 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:48,196 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:48,268 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:45:48,268 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) [2020-10-20 06:45:48,284 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:48,286 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:45:48,286 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:45:48,287 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:45:48,287 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:45:48,287 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:45:48,289 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:45:48,289 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:45:48,292 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) [2020-10-20 06:45:48,340 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 [2020-10-20 06:45:48,342 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:45:48,342 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:45:48,343 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:45:48,343 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:45:48,343 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:45:48,344 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:45:48,344 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 [2020-10-20 06:45:48,347 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:45:48,350 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:45:48,350 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) [2020-10-20 06:45:48,362 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:45:48,362 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:45:48,362 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:45:48,362 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:48,396 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:45:48,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:48,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:48,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:45:48,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:45:48,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:48,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:45:48,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:45:48,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:45:48,488 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 [2020-10-20 06:45:48,488 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 35 transitions. cyclomatic complexity: 12 Second operand 4 states. [2020-10-20 06:45:48,545 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 35 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 45 states and 56 transitions. Complement of second has 5 states. [2020-10-20 06:45:48,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:45:48,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 06:45:48,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 34 transitions. [2020-10-20 06:45:48,546 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 34 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-20 06:45:48,546 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:48,547 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 34 transitions. Stem has 10 letters. Loop has 3 letters. [2020-10-20 06:45:48,547 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:48,547 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 34 transitions. Stem has 7 letters. Loop has 6 letters. [2020-10-20 06:45:48,547 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:48,548 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 56 transitions. [2020-10-20 06:45:48,549 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-10-20 06:45:48,549 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 42 states and 52 transitions. [2020-10-20 06:45:48,550 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2020-10-20 06:45:48,550 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2020-10-20 06:45:48,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 52 transitions. [2020-10-20 06:45:48,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:45:48,551 INFO L691 BuchiCegarLoop]: Abstraction has 42 states and 52 transitions. [2020-10-20 06:45:48,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 52 transitions. [2020-10-20 06:45:48,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2020-10-20 06:45:48,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-20 06:45:48,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2020-10-20 06:45:48,554 INFO L714 BuchiCegarLoop]: Abstraction has 30 states and 39 transitions. [2020-10-20 06:45:48,554 INFO L594 BuchiCegarLoop]: Abstraction has 30 states and 39 transitions. [2020-10-20 06:45:48,554 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-20 06:45:48,555 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 39 transitions. [2020-10-20 06:45:48,555 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-10-20 06:45:48,555 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:45:48,555 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:45:48,556 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:45:48,556 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:45:48,557 INFO L794 eck$LassoCheckResult]: Stem: 700#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 698#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, 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~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;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; 699#L22 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 694#L72 base2flt_#res := base2flt_~__retres4~0; 695#L73 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;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; 697#L22-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 685#L72-1 base2flt_#res := base2flt_~__retres4~0; 686#L73-1 main_#t~ret12 := base2flt_#res;main_~a~0 := main_#t~ret12;havoc main_#t~ret12;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; 693#L22-2 assume !(0 == base2flt_~m % 4294967296); 671#L28-2 assume !(base2flt_~m % 4294967296 < 16777216); 672#L50-8 [2020-10-20 06:45:48,557 INFO L796 eck$LassoCheckResult]: Loop: 672#L50-8 assume !false; 683#L51-2 assume base2flt_~m % 4294967296 >= 33554432; 684#L52-2 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 672#L50-8 [2020-10-20 06:45:48,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:48,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1012956351, now seen corresponding path program 1 times [2020-10-20 06:45:48,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:48,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203751567] [2020-10-20 06:45:48,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:48,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:48,590 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:48,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:48,614 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:48,623 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:45:48,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:48,626 INFO L82 PathProgramCache]: Analyzing trace with hash 199730, now seen corresponding path program 1 times [2020-10-20 06:45:48,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:48,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540327774] [2020-10-20 06:45:48,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:48,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:48,637 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:48,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:48,649 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:48,653 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:45:48,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:48,654 INFO L82 PathProgramCache]: Analyzing trace with hash 542600884, now seen corresponding path program 1 times [2020-10-20 06:45:48,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:48,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230325960] [2020-10-20 06:45:48,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:48,687 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:48,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:48,716 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:48,727 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:45:48,757 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:45:48,757 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:45:48,757 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:45:48,757 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:45:48,757 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:45:48,758 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:48,758 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:45:48,758 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:45:48,758 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration4_Loop [2020-10-20 06:45:48,758 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:45:48,758 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:45:48,760 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:48,768 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:48,856 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:45:48,856 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) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:48,860 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:45:48,861 INFO L160 nArgumentSynthesizer]: Using integer mode. 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) [2020-10-20 06:45:48,918 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:45:48,919 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 [2020-10-20 06:45:48,961 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:45:48,963 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:45:48,963 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:45:48,963 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:45:48,964 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:45:48,964 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:45:48,964 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:48,964 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:45:48,964 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:45:48,964 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration4_Loop [2020-10-20 06:45:48,964 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:45:48,965 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:45:48,978 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:48,986 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:49,062 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:45:49,063 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) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:49,071 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 [2020-10-20 06:45:49,073 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:45:49,073 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:45:49,073 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:45:49,073 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:45:49,073 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:45:49,074 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:45:49,075 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:45:49,080 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:45:49,084 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:45:49,084 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) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:49,094 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:45:49,095 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:45:49,095 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:45:49,095 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2020-10-20 06:45:49,131 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:45:49,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:49,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:49,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:45:49,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:45:49,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:49,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:45:49,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:45:49,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:45:49,185 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 [2020-10-20 06:45:49,186 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 30 states and 39 transitions. cyclomatic complexity: 13 Second operand 3 states. [2020-10-20 06:45:49,296 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 30 states and 39 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 33 states and 43 transitions. Complement of second has 4 states. [2020-10-20 06:45:49,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:45:49,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:45:49,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 31 transitions. [2020-10-20 06:45:49,302 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 10 letters. Loop has 3 letters. [2020-10-20 06:45:49,302 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:49,303 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 13 letters. Loop has 3 letters. [2020-10-20 06:45:49,303 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:49,303 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 10 letters. Loop has 6 letters. [2020-10-20 06:45:49,303 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:49,303 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 43 transitions. [2020-10-20 06:45:49,304 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 06:45:49,308 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 27 states and 35 transitions. [2020-10-20 06:45:49,309 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2020-10-20 06:45:49,309 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2020-10-20 06:45:49,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 35 transitions. [2020-10-20 06:45:49,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:45:49,309 INFO L691 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-10-20 06:45:49,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 35 transitions. [2020-10-20 06:45:49,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-20 06:45:49,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-20 06:45:49,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-10-20 06:45:49,320 INFO L714 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-10-20 06:45:49,320 INFO L594 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-10-20 06:45:49,320 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-20 06:45:49,320 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 35 transitions. [2020-10-20 06:45:49,321 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 06:45:49,321 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:45:49,321 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:45:49,324 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:45:49,325 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:45:49,325 INFO L794 eck$LassoCheckResult]: Stem: 818#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 816#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, 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~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;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; 817#L22 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 811#L72 base2flt_#res := base2flt_~__retres4~0; 812#L73 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;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; 815#L22-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 803#L72-1 base2flt_#res := base2flt_~__retres4~0; 804#L73-1 main_#t~ret12 := base2flt_#res;main_~a~0 := main_#t~ret12;havoc main_#t~ret12;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; 813#L22-2 assume !(0 == base2flt_~m % 4294967296); 792#L28-2 assume base2flt_~m % 4294967296 < 16777216; 793#L40-5 [2020-10-20 06:45:49,325 INFO L796 eck$LassoCheckResult]: Loop: 793#L40-5 assume !false; 809#L31-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 810#L40-4 assume base2flt_~m % 4294967296 < 16777216; 793#L40-5 [2020-10-20 06:45:49,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:49,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1012956325, now seen corresponding path program 1 times [2020-10-20 06:45:49,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:49,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444490663] [2020-10-20 06:45:49,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:49,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:49,371 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:49,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:49,409 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:49,420 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:45:49,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:49,424 INFO L82 PathProgramCache]: Analyzing trace with hash 173971, now seen corresponding path program 1 times [2020-10-20 06:45:49,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:49,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244233082] [2020-10-20 06:45:49,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:49,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:49,430 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:49,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:49,437 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:49,439 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:45:49,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:49,442 INFO L82 PathProgramCache]: Analyzing trace with hash 541800559, now seen corresponding path program 1 times [2020-10-20 06:45:49,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:49,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137923218] [2020-10-20 06:45:49,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:49,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:49,465 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:49,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:49,476 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:49,481 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:45:49,501 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:45:49,501 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:45:49,501 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:45:49,501 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:45:49,502 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:45:49,502 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:49,502 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:45:49,502 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:45:49,502 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration5_Loop [2020-10-20 06:45:49,502 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:45:49,502 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:45:49,503 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:49,512 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:49,572 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:45:49,573 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) [2020-10-20 06:45:49,576 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:45:49,576 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 22 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:45:49,621 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:45:49,621 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:49,665 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:45:49,667 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:45:49,667 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:45:49,668 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:45:49,668 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:45:49,668 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:45:49,668 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:49,668 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:45:49,668 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:45:49,668 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration5_Loop [2020-10-20 06:45:49,668 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:45:49,668 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:45:49,670 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:49,677 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:49,741 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:45:49,741 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) [2020-10-20 06:45:49,749 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 [2020-10-20 06:45:49,751 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:45:49,751 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:45:49,752 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:45:49,752 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:45:49,752 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:45:49,753 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:45:49,753 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 [2020-10-20 06:45:49,756 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:45:49,760 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:45:49,761 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) [2020-10-20 06:45:49,764 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:45:49,764 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:45:49,764 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:45:49,764 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:49,795 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:45:49,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:49,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:45:49,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:45:49,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:49,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:45:49,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:45:49,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:45:49,877 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 [2020-10-20 06:45:49,877 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 35 transitions. cyclomatic complexity: 11 Second operand 4 states. [2020-10-20 06:45:49,884 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 35 transitions. cyclomatic complexity: 11. Second operand 4 states. Result 31 states and 39 transitions. Complement of second has 4 states. [2020-10-20 06:45:49,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:45:49,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 06:45:49,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 28 transitions. [2020-10-20 06:45:49,887 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 28 transitions. Stem has 10 letters. Loop has 3 letters. [2020-10-20 06:45:49,887 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:49,887 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 28 transitions. Stem has 13 letters. Loop has 3 letters. [2020-10-20 06:45:49,888 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:49,888 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 28 transitions. Stem has 10 letters. Loop has 6 letters. [2020-10-20 06:45:49,888 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:49,889 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 39 transitions. [2020-10-20 06:45:49,889 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:45:49,889 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 0 states and 0 transitions. [2020-10-20 06:45:49,889 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 06:45:49,890 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 06:45:49,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 06:45:49,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:45:49,890 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:45:49,890 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:45:49,890 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:45:49,890 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-10-20 06:45:49,890 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:45:49,890 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:45:49,891 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-20 06:45:49,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 06:45:49 BoogieIcfgContainer [2020-10-20 06:45:49,898 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 06:45:49,899 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:45:49,899 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:45:49,899 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:45:49,900 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:45:45" (3/4) ... [2020-10-20 06:45:49,903 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:45:49,903 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:45:49,908 INFO L168 Benchmark]: Toolchain (without parser) took 5414.36 ms. Allocated memory was 40.4 MB in the beginning and 68.7 MB in the end (delta: 28.3 MB). Free memory was 16.9 MB in the beginning and 28.9 MB in the end (delta: -12.0 MB). Peak memory consumption was 16.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:45:49,910 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 31.5 MB. Free memory was 6.8 MB in the beginning and 6.8 MB in the end (delta: 45.7 kB). Peak memory consumption was 45.7 kB. Max. memory is 14.3 GB. [2020-10-20 06:45:49,912 INFO L168 Benchmark]: CACSL2BoogieTranslator took 438.56 ms. Allocated memory was 40.4 MB in the beginning and 40.9 MB in the end (delta: 524.3 kB). Free memory was 16.0 MB in the beginning and 12.7 MB in the end (delta: 3.3 MB). Peak memory consumption was 8.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:45:49,917 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.00 ms. Allocated memory is still 40.9 MB. Free memory was 12.6 MB in the beginning and 10.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:45:49,918 INFO L168 Benchmark]: Boogie Preprocessor took 38.28 ms. Allocated memory is still 40.9 MB. Free memory was 10.1 MB in the beginning and 8.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:45:49,921 INFO L168 Benchmark]: RCFGBuilder took 615.47 ms. Allocated memory was 40.9 MB in the beginning and 43.5 MB in the end (delta: 2.6 MB). Free memory was 8.1 MB in the beginning and 12.9 MB in the end (delta: -4.9 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:45:49,927 INFO L168 Benchmark]: BuchiAutomizer took 4256.44 ms. Allocated memory was 43.5 MB in the beginning and 68.7 MB in the end (delta: 25.2 MB). Free memory was 12.9 MB in the beginning and 29.5 MB in the end (delta: -16.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:45:49,930 INFO L168 Benchmark]: Witness Printer took 4.78 ms. Allocated memory is still 68.7 MB. Free memory was 29.5 MB in the beginning and 28.9 MB in the end (delta: 636.1 kB). Peak memory consumption was 636.1 kB. Max. memory is 14.3 GB. [2020-10-20 06:45:49,939 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 31.5 MB. Free memory was 6.8 MB in the beginning and 6.8 MB in the end (delta: 45.7 kB). Peak memory consumption was 45.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 438.56 ms. Allocated memory was 40.4 MB in the beginning and 40.9 MB in the end (delta: 524.3 kB). Free memory was 16.0 MB in the beginning and 12.7 MB in the end (delta: 3.3 MB). Peak memory consumption was 8.5 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 52.00 ms. Allocated memory is still 40.9 MB. Free memory was 12.6 MB in the beginning and 10.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 38.28 ms. Allocated memory is still 40.9 MB. Free memory was 10.1 MB in the beginning and 8.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * RCFGBuilder took 615.47 ms. Allocated memory was 40.9 MB in the beginning and 43.5 MB in the end (delta: 2.6 MB). Free memory was 8.1 MB in the beginning and 12.9 MB in the end (delta: -4.9 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 4256.44 ms. Allocated memory was 43.5 MB in the beginning and 68.7 MB in the end (delta: 25.2 MB). Free memory was 12.9 MB in the beginning and 29.5 MB in the end (delta: -16.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 14.3 GB. * Witness Printer took 4.78 ms. Allocated memory is still 68.7 MB. Free memory was 29.5 MB in the beginning and 28.9 MB in the end (delta: 636.1 kB). Peak memory consumption was 636.1 kB. Max. memory is 14.3 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 4.2s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 3.1s. Construction of modules took 0.1s. Büchi inclusion checks took 0.6s. 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 30 states and ocurred in iteration 3. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 257 SDtfs, 224 SDslu, 27 SDs, 0 SdLazy, 38 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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: 52ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...