./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/bitvector/soft_float_5a.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 6029375071a37af887817933cb6d522f173528f0 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:52:55,145 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:52:55,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:52:55,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:52:55,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:52:55,200 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:52:55,202 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:52:55,205 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:52:55,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:52:55,210 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:52:55,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:52:55,215 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:52:55,216 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:52:55,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:52:55,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:52:55,226 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:52:55,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:52:55,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:52:55,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:52:55,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:52:55,241 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:52:55,242 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:52:55,245 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:52:55,246 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:52:55,251 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:52:55,252 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:52:55,252 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:52:55,254 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:52:55,255 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:52:55,256 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:52:55,257 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:52:55,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:52:55,258 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:52:55,259 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:52:55,261 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:52:55,261 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:52:55,262 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:52:55,262 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:52:55,262 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:52:55,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:52:55,265 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:52:55,266 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-19 18:52:55,314 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:52:55,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:52:55,316 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:52:55,316 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:52:55,316 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:52:55,317 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-19 18:52:55,317 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-19 18:52:55,317 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-19 18:52:55,317 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-19 18:52:55,318 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-19 18:52:55,318 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-19 18:52:55,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:52:55,319 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:52:55,319 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:52:55,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:52:55,319 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:52:55,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:52:55,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-19 18:52:55,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-19 18:52:55,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-19 18:52:55,321 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:52:55,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 18:52:55,321 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-19 18:52:55,321 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:52:55,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-19 18:52:55,322 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:52:55,322 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:52:55,323 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-19 18:52:55,323 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:52:55,323 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:52:55,323 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:52:55,324 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-19 18:52:55,325 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-19 18:52:55,325 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 -> 6029375071a37af887817933cb6d522f173528f0 [2020-10-19 18:52:55,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:52:55,651 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:52:55,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:52:55,657 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:52:55,657 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:52:55,658 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2020-10-19 18:52:55,722 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3595408fd/43893c30cc6a45c0831bc236022af90a/FLAG710ca471c [2020-10-19 18:52:56,158 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:52:56,159 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2020-10-19 18:52:56,169 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3595408fd/43893c30cc6a45c0831bc236022af90a/FLAG710ca471c [2020-10-19 18:52:56,553 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3595408fd/43893c30cc6a45c0831bc236022af90a [2020-10-19 18:52:56,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:52:56,564 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 18:52:56,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:52:56,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:52:56,570 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:52:56,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:52:56" (1/1) ... [2020-10-19 18:52:56,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f290273 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:56, skipping insertion in model container [2020-10-19 18:52:56,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:52:56" (1/1) ... [2020-10-19 18:52:56,588 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:52:56,641 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:52:56,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:52:56,873 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:52:56,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:52:56,995 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:52:56,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:56 WrapperNode [2020-10-19 18:52:56,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:52:56,997 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 18:52:56,997 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 18:52:56,997 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 18:52:57,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:56" (1/1) ... [2020-10-19 18:52:57,016 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:56" (1/1) ... [2020-10-19 18:52:57,050 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 18:52:57,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:52:57,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:52:57,051 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:52:57,061 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:56" (1/1) ... [2020-10-19 18:52:57,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:56" (1/1) ... [2020-10-19 18:52:57,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:56" (1/1) ... [2020-10-19 18:52:57,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:56" (1/1) ... [2020-10-19 18:52:57,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:56" (1/1) ... [2020-10-19 18:52:57,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:56" (1/1) ... [2020-10-19 18:52:57,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:56" (1/1) ... [2020-10-19 18:52:57,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:52:57,090 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:52:57,090 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:52:57,091 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:52:57,092 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:56" (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 [2020-10-19 18:52:57,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 18:52:57,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:52:57,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:52:57,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:52:57,788 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:52:57,789 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-10-19 18:52:57,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:52:57 BoogieIcfgContainer [2020-10-19 18:52:57,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:52:57,792 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-19 18:52:57,792 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-19 18:52:57,796 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-19 18:52:57,797 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:52:57,798 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.10 06:52:56" (1/3) ... [2020-10-19 18:52:57,799 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@12b2c32c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 06:52:57, skipping insertion in model container [2020-10-19 18:52:57,799 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:52:57,799 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:56" (2/3) ... [2020-10-19 18:52:57,800 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@12b2c32c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 06:52:57, skipping insertion in model container [2020-10-19 18:52:57,800 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:52:57,800 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:52:57" (3/3) ... [2020-10-19 18:52:57,802 INFO L373 chiAutomizerObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2020-10-19 18:52:57,847 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-19 18:52:57,847 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-19 18:52:57,847 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-19 18:52:57,847 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:52:57,848 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:52:57,848 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-19 18:52:57,848 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:52:57,848 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-19 18:52:57,865 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 72 states. [2020-10-19 18:52:57,889 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2020-10-19 18:52:57,890 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:52:57,890 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:52:57,898 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-19 18:52:57,898 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 18:52:57,898 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-19 18:52:57,899 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 72 states. [2020-10-19 18:52:57,905 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2020-10-19 18:52:57,905 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:52:57,906 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:52:57,906 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-19 18:52:57,906 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 18:52:57,915 INFO L794 eck$LassoCheckResult]: Stem: 35#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 12#L-1true havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 15#L21true assume !(0 == base2flt_~m % 4294967296); 44#L27true assume !(base2flt_~m % 4294967296 < 16777216); 41#L49-2true [2020-10-19 18:52:57,916 INFO L796 eck$LassoCheckResult]: Loop: 41#L49-2true assume !false; 64#L50true assume base2flt_~m % 4294967296 >= 33554432; 10#L51true assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 41#L49-2true [2020-10-19 18:52:57,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:57,923 INFO L82 PathProgramCache]: Analyzing trace with hash 925696, now seen corresponding path program 1 times [2020-10-19 18:52:57,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:57,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543172396] [2020-10-19 18:52:57,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:58,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:52:58,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543172396] [2020-10-19 18:52:58,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:52:58,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 18:52:58,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475185176] [2020-10-19 18:52:58,142 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-19 18:52:58,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:58,143 INFO L82 PathProgramCache]: Analyzing trace with hash 74612, now seen corresponding path program 1 times [2020-10-19 18:52:58,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:58,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586307590] [2020-10-19 18:52:58,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:58,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:58,159 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:58,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:58,168 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:58,191 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:52:58,243 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:52:58,244 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:52:58,244 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:52:58,244 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:52:58,244 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:52:58,245 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:58,245 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:52:58,245 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:52:58,245 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration1_Loop [2020-10-19 18:52:58,246 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:52:58,246 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:52:58,269 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:58,284 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:58,404 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:52:58,405 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) [2020-10-19 18:52:58,413 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:52:58,413 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 [2020-10-19 18:52:58,454 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 18:52:58,454 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 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:52:58,467 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:52:58,467 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 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 [2020-10-19 18:52:58,512 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:52:58,513 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 18:52:58,548 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:52:58,550 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:52:58,550 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:52:58,550 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:52:58,550 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:52:58,551 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:52:58,551 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:58,551 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:52:58,551 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:52:58,551 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration1_Loop [2020-10-19 18:52:58,551 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:52:58,552 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:52:58,554 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:58,564 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:58,663 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:52:58,669 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:58,675 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 [2020-10-19 18:52:58,677 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:52:58,678 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:52:58,679 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:52:58,679 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:52:58,679 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:52:58,684 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:52:58,684 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:52:58,690 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 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:58,726 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 [2020-10-19 18:52:58,728 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:52:58,728 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:52:58,729 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:52:58,729 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:52:58,729 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:52:58,732 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:52:58,732 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:52:58,736 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:52:58,741 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:52:58,741 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:52:58,758 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:52:58,758 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:52:58,758 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:52:58,759 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:58,795 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:52:58,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:58,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:58,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:52:58,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:58,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:58,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:52:58,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:58,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:52:58,888 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 [2020-10-19 18:52:58,890 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 72 states. Second operand 3 states. [2020-10-19 18:52:58,981 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 72 states.. Second operand 3 states. Result 206 states and 346 transitions. Complement of second has 6 states. [2020-10-19 18:52:58,982 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 [2020-10-19 18:52:58,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:52:58,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 229 transitions. [2020-10-19 18:52:58,988 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 229 transitions. Stem has 4 letters. Loop has 3 letters. [2020-10-19 18:52:58,990 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:58,990 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 229 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-19 18:52:58,991 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:58,991 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 229 transitions. Stem has 4 letters. Loop has 6 letters. [2020-10-19 18:52:58,991 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:58,992 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 206 states and 346 transitions. [2020-10-19 18:52:59,004 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 39 [2020-10-19 18:52:59,012 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 206 states to 79 states and 120 transitions. [2020-10-19 18:52:59,013 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 75 [2020-10-19 18:52:59,014 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 76 [2020-10-19 18:52:59,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 120 transitions. [2020-10-19 18:52:59,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:52:59,016 INFO L691 BuchiCegarLoop]: Abstraction has 79 states and 120 transitions. [2020-10-19 18:52:59,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states and 120 transitions. [2020-10-19 18:52:59,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 68. [2020-10-19 18:52:59,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-19 18:52:59,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 108 transitions. [2020-10-19 18:52:59,053 INFO L714 BuchiCegarLoop]: Abstraction has 68 states and 108 transitions. [2020-10-19 18:52:59,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:52:59,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:52:59,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:52:59,058 INFO L87 Difference]: Start difference. First operand 68 states and 108 transitions. Second operand 3 states. [2020-10-19 18:52:59,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:52:59,145 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2020-10-19 18:52:59,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:52:59,146 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 48 transitions. [2020-10-19 18:52:59,148 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2020-10-19 18:52:59,149 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 48 transitions. [2020-10-19 18:52:59,149 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2020-10-19 18:52:59,149 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2020-10-19 18:52:59,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 48 transitions. [2020-10-19 18:52:59,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:52:59,151 INFO L691 BuchiCegarLoop]: Abstraction has 35 states and 48 transitions. [2020-10-19 18:52:59,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 48 transitions. [2020-10-19 18:52:59,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-19 18:52:59,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-19 18:52:59,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 48 transitions. [2020-10-19 18:52:59,155 INFO L714 BuchiCegarLoop]: Abstraction has 35 states and 48 transitions. [2020-10-19 18:52:59,155 INFO L594 BuchiCegarLoop]: Abstraction has 35 states and 48 transitions. [2020-10-19 18:52:59,155 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-19 18:52:59,155 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 48 transitions. [2020-10-19 18:52:59,157 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2020-10-19 18:52:59,157 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:52:59,157 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:52:59,158 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:52:59,158 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 18:52:59,159 INFO L794 eck$LassoCheckResult]: Stem: 459#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(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 439#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_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~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_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 440#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 436#L71 base2flt_#res := base2flt_~__retres4~0; 437#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 458#L21-1 assume !(0 == base2flt_~m % 4294967296); 425#L27-1 assume !(base2flt_~m % 4294967296 < 16777216); 426#L49-5 [2020-10-19 18:52:59,159 INFO L796 eck$LassoCheckResult]: Loop: 426#L49-5 assume !false; 443#L50-1 assume base2flt_~m % 4294967296 >= 33554432; 438#L51-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 426#L49-5 [2020-10-19 18:52:59,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:59,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1806627809, now seen corresponding path program 1 times [2020-10-19 18:52:59,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:59,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931108122] [2020-10-19 18:52:59,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:59,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:52:59,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931108122] [2020-10-19 18:52:59,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:52:59,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 18:52:59,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989524000] [2020-10-19 18:52:59,210 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-19 18:52:59,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:59,211 INFO L82 PathProgramCache]: Analyzing trace with hash 137171, now seen corresponding path program 1 times [2020-10-19 18:52:59,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:59,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490531983] [2020-10-19 18:52:59,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:59,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:59,219 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:59,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:59,226 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:59,229 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:52:59,255 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:52:59,255 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:52:59,255 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:52:59,255 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:52:59,256 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:52:59,256 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:59,256 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:52:59,256 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:52:59,256 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration2_Loop [2020-10-19 18:52:59,256 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:52:59,256 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:52:59,258 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:59,268 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:59,355 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:52:59,355 INFO L404 LassoAnalysis]: Checking for nontermination... 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) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:59,361 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:52:59,361 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 18:52:59,398 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 18:52:59,399 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:52:59,407 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:52:59,407 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /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) [2020-10-19 18:52:59,462 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:52:59,463 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:59,506 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:52:59,509 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:52:59,510 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:52:59,511 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:52:59,511 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:52:59,511 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:52:59,511 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:59,511 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:52:59,512 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:52:59,512 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration2_Loop [2020-10-19 18:52:59,512 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:52:59,512 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:52:59,514 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:59,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:59,621 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:52:59,621 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:59,629 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 [2020-10-19 18:52:59,631 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:52:59,631 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:52:59,632 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:52:59,632 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:52:59,632 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:52:59,635 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:52:59,635 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:52:59,639 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 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 [2020-10-19 18:52:59,673 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 [2020-10-19 18:52:59,674 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:52:59,675 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:52:59,675 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:52:59,675 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:52:59,675 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:52:59,677 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:52:59,677 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:52:59,683 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:52:59,686 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:52:59,687 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 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 [2020-10-19 18:52:59,691 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:52:59,691 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:52:59,691 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:52:59,691 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2020-10-19 18:52:59,714 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:52:59,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:59,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:59,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:52:59,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:59,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:52:59,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:59,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:52:59,814 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-10-19 18:52:59,814 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 48 transitions. cyclomatic complexity: 19 Second operand 3 states. [2020-10-19 18:52:59,883 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 48 transitions. cyclomatic complexity: 19. Second operand 3 states. Result 63 states and 85 transitions. Complement of second has 5 states. [2020-10-19 18:52:59,883 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 [2020-10-19 18:52:59,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:52:59,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2020-10-19 18:52:59,884 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 50 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-19 18:52:59,885 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:59,885 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 50 transitions. Stem has 10 letters. Loop has 3 letters. [2020-10-19 18:52:59,885 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:59,885 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 50 transitions. Stem has 7 letters. Loop has 6 letters. [2020-10-19 18:52:59,886 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:59,886 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 85 transitions. [2020-10-19 18:52:59,888 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2020-10-19 18:52:59,889 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 60 states and 81 transitions. [2020-10-19 18:52:59,889 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 56 [2020-10-19 18:52:59,890 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2020-10-19 18:52:59,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 81 transitions. [2020-10-19 18:52:59,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:52:59,890 INFO L691 BuchiCegarLoop]: Abstraction has 60 states and 81 transitions. [2020-10-19 18:52:59,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 81 transitions. [2020-10-19 18:52:59,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 38. [2020-10-19 18:52:59,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-19 18:52:59,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2020-10-19 18:52:59,895 INFO L714 BuchiCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-10-19 18:52:59,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:52:59,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:52:59,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:52:59,897 INFO L87 Difference]: Start difference. First operand 38 states and 52 transitions. Second operand 3 states. [2020-10-19 18:52:59,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:52:59,956 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2020-10-19 18:52:59,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:52:59,957 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 46 transitions. [2020-10-19 18:52:59,958 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2020-10-19 18:52:59,959 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 36 states and 46 transitions. [2020-10-19 18:52:59,959 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2020-10-19 18:52:59,959 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2020-10-19 18:52:59,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 46 transitions. [2020-10-19 18:52:59,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:52:59,960 INFO L691 BuchiCegarLoop]: Abstraction has 36 states and 46 transitions. [2020-10-19 18:52:59,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 46 transitions. [2020-10-19 18:52:59,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2020-10-19 18:52:59,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-19 18:52:59,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2020-10-19 18:52:59,964 INFO L714 BuchiCegarLoop]: Abstraction has 32 states and 41 transitions. [2020-10-19 18:52:59,965 INFO L594 BuchiCegarLoop]: Abstraction has 32 states and 41 transitions. [2020-10-19 18:52:59,965 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-19 18:52:59,965 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 41 transitions. [2020-10-19 18:52:59,966 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2020-10-19 18:52:59,966 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:52:59,966 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:52:59,967 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:52:59,967 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 18:52:59,968 INFO L794 eck$LassoCheckResult]: Stem: 677#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(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 658#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_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~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_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 659#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 656#L71 base2flt_#res := base2flt_~__retres4~0; 657#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 676#L21-1 assume !(0 == base2flt_~m % 4294967296); 646#L27-1 assume base2flt_~m % 4294967296 < 16777216; 647#L39-3 [2020-10-19 18:52:59,968 INFO L796 eck$LassoCheckResult]: Loop: 647#L39-3 assume !false; 675#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 667#L39-2 assume base2flt_~m % 4294967296 < 16777216; 647#L39-3 [2020-10-19 18:52:59,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:59,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1806627783, now seen corresponding path program 1 times [2020-10-19 18:52:59,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:59,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6920960] [2020-10-19 18:52:59,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:59,988 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:53:00,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:53:00,004 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:53:00,010 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:53:00,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:53:00,011 INFO L82 PathProgramCache]: Analyzing trace with hash 111412, now seen corresponding path program 1 times [2020-10-19 18:53:00,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:53:00,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086845282] [2020-10-19 18:53:00,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:53:00,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:53:00,017 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:53:00,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:53:00,021 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:53:00,023 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:53:00,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:53:00,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1013178798, now seen corresponding path program 1 times [2020-10-19 18:53:00,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:53:00,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116898209] [2020-10-19 18:53:00,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:53:00,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:53:00,044 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:53:00,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:53:00,065 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:53:00,072 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:53:00,097 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:53:00,097 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:53:00,097 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:53:00,097 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:53:00,098 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:53:00,098 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:53:00,098 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:53:00,098 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:53:00,099 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration3_Loop [2020-10-19 18:53:00,099 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:53:00,099 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:53:00,100 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:53:00,109 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:53:00,175 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:53:00,176 INFO L404 LassoAnalysis]: Checking for nontermination... 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) [2020-10-19 18:53:00,188 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:53:00,188 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:53:00,225 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 18:53:00,225 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:53:00,253 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:53:00,253 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 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 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:53:00,288 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:53:00,288 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 18:53:00,312 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:53:00,314 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:53:00,314 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:53:00,314 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:53:00,314 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:53:00,315 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:53:00,315 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:53:00,315 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:53:00,315 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:53:00,315 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration3_Loop [2020-10-19 18:53:00,316 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:53:00,316 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:53:00,320 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:53:00,337 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:53:00,421 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:53:00,424 INFO L489 LassoAnalysis]: Using template 'affine'. 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) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:53:00,435 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 [2020-10-19 18:53:00,437 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:53:00,437 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:53:00,437 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:53:00,437 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:53:00,437 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:53:00,439 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:53:00,439 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:53:00,448 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 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 [2020-10-19 18:53:00,475 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 [2020-10-19 18:53:00,477 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:53:00,477 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:53:00,477 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:53:00,477 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:53:00,477 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:53:00,478 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:53:00,478 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:53:00,480 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:53:00,484 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:53:00,484 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:53:00,487 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:53:00,487 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:53:00,488 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:53:00,488 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2020-10-19 18:53:00,510 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:53:00,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:53:00,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:53:00,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:53:00,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:53:00,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:53:00,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:53:00,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:53:00,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:53:00,619 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 [2020-10-19 18:53:00,620 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 41 transitions. cyclomatic complexity: 14 Second operand 4 states. [2020-10-19 18:53:00,631 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 32 states and 41 transitions. cyclomatic complexity: 14. Second operand 4 states. Result 39 states and 50 transitions. Complement of second has 5 states. [2020-10-19 18:53:00,632 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 [2020-10-19 18:53:00,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-19 18:53:00,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 15 transitions. [2020-10-19 18:53:00,633 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-19 18:53:00,633 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:53:00,633 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 10 letters. Loop has 3 letters. [2020-10-19 18:53:00,633 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:53:00,634 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 7 letters. Loop has 6 letters. [2020-10-19 18:53:00,634 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:53:00,634 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 50 transitions. [2020-10-19 18:53:00,636 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-10-19 18:53:00,636 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 36 states and 46 transitions. [2020-10-19 18:53:00,637 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2020-10-19 18:53:00,637 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2020-10-19 18:53:00,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 46 transitions. [2020-10-19 18:53:00,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:53:00,638 INFO L691 BuchiCegarLoop]: Abstraction has 36 states and 46 transitions. [2020-10-19 18:53:00,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 46 transitions. [2020-10-19 18:53:00,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-19 18:53:00,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-19 18:53:00,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2020-10-19 18:53:00,642 INFO L714 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2020-10-19 18:53:00,642 INFO L594 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2020-10-19 18:53:00,642 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-19 18:53:00,642 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 45 transitions. [2020-10-19 18:53:00,643 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-10-19 18:53:00,643 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:53:00,643 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:53:00,644 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:53:00,644 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 18:53:00,645 INFO L794 eck$LassoCheckResult]: Stem: 802#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(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 780#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_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~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_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 781#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 778#L71 base2flt_#res := base2flt_~__retres4~0; 779#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 801#L21-1 assume !(0 == base2flt_~m % 4294967296); 768#L27-1 assume base2flt_~m % 4294967296 < 16777216; 769#L39-3 assume !false; 799#L30-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 774#L71-1 base2flt_#res := base2flt_~__retres4~0; 775#L72-1 main_#t~ret12 := base2flt_#res;main_~one~0 := main_#t~ret12;havoc main_#t~ret12;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; 798#L21-2 assume !(0 == base2flt_~m % 4294967296); 786#L27-2 assume !(base2flt_~m % 4294967296 < 16777216); 777#L49-8 [2020-10-19 18:53:00,645 INFO L796 eck$LassoCheckResult]: Loop: 777#L49-8 assume !false; 792#L50-2 assume base2flt_~m % 4294967296 >= 33554432; 776#L51-2 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 777#L49-8 [2020-10-19 18:53:00,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:53:00,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1421262134, now seen corresponding path program 1 times [2020-10-19 18:53:00,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:53:00,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817983751] [2020-10-19 18:53:00,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:53:00,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:53:00,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:53:00,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817983751] [2020-10-19 18:53:00,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:53:00,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:53:00,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177082618] [2020-10-19 18:53:00,683 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-19 18:53:00,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:53:00,683 INFO L82 PathProgramCache]: Analyzing trace with hash 199730, now seen corresponding path program 1 times [2020-10-19 18:53:00,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:53:00,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415239237] [2020-10-19 18:53:00,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:53:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:53:00,691 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:53:00,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:53:00,697 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:53:00,699 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:53:00,756 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:53:00,757 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:53:00,757 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:53:00,757 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:53:00,757 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:53:00,757 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:53:00,757 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:53:00,757 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:53:00,757 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration4_Loop [2020-10-19 18:53:00,757 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:53:00,757 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:53:00,759 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:53:00,764 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:53:00,866 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:53:00,867 INFO L404 LassoAnalysis]: Checking for nontermination... 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 [2020-10-19 18:53:00,879 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:53:00,879 INFO L160 nArgumentSynthesizer]: Using integer mode. 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) [2020-10-19 18:53:00,948 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:53:00,948 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:53:00,984 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:53:00,986 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:53:00,986 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:53:00,986 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:53:00,987 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:53:00,987 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:53:00,987 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:53:00,987 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:53:00,987 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:53:00,987 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration4_Loop [2020-10-19 18:53:00,987 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:53:00,987 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:53:00,988 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:53:00,994 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:53:01,091 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:53:01,092 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:53:01,107 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 [2020-10-19 18:53:01,109 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:53:01,109 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:53:01,109 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:53:01,110 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:53:01,110 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:53:01,112 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:53:01,113 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:53:01,118 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:53:01,120 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:53:01,121 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:53:01,135 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:53:01,135 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:53:01,135 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:53:01,136 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:53:01,172 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:53:01,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:53:01,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:53:01,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:53:01,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:53:01,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:53:01,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:53:01,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:53:01,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:53:01,233 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 [2020-10-19 18:53:01,234 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 45 transitions. cyclomatic complexity: 15 Second operand 3 states. [2020-10-19 18:53:01,278 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 45 transitions. cyclomatic complexity: 15. Second operand 3 states. Result 52 states and 65 transitions. Complement of second has 5 states. [2020-10-19 18:53:01,282 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 [2020-10-19 18:53:01,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:53:01,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2020-10-19 18:53:01,284 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 13 letters. Loop has 3 letters. [2020-10-19 18:53:01,284 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:53:01,284 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 16 letters. Loop has 3 letters. [2020-10-19 18:53:01,285 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:53:01,285 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 13 letters. Loop has 6 letters. [2020-10-19 18:53:01,286 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:53:01,286 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 65 transitions. [2020-10-19 18:53:01,290 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2020-10-19 18:53:01,292 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 49 states and 61 transitions. [2020-10-19 18:53:01,292 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2020-10-19 18:53:01,294 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2020-10-19 18:53:01,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 61 transitions. [2020-10-19 18:53:01,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:53:01,295 INFO L691 BuchiCegarLoop]: Abstraction has 49 states and 61 transitions. [2020-10-19 18:53:01,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 61 transitions. [2020-10-19 18:53:01,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 38. [2020-10-19 18:53:01,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-19 18:53:01,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2020-10-19 18:53:01,301 INFO L714 BuchiCegarLoop]: Abstraction has 38 states and 49 transitions. [2020-10-19 18:53:01,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:53:01,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:53:01,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:53:01,303 INFO L87 Difference]: Start difference. First operand 38 states and 49 transitions. Second operand 3 states. [2020-10-19 18:53:01,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:53:01,327 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2020-10-19 18:53:01,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:53:01,328 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 50 transitions. [2020-10-19 18:53:01,329 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-10-19 18:53:01,332 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 39 states and 49 transitions. [2020-10-19 18:53:01,332 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2020-10-19 18:53:01,332 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2020-10-19 18:53:01,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 49 transitions. [2020-10-19 18:53:01,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:53:01,333 INFO L691 BuchiCegarLoop]: Abstraction has 39 states and 49 transitions. [2020-10-19 18:53:01,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 49 transitions. [2020-10-19 18:53:01,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2020-10-19 18:53:01,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-19 18:53:01,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2020-10-19 18:53:01,341 INFO L714 BuchiCegarLoop]: Abstraction has 38 states and 48 transitions. [2020-10-19 18:53:01,341 INFO L594 BuchiCegarLoop]: Abstraction has 38 states and 48 transitions. [2020-10-19 18:53:01,341 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-19 18:53:01,342 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 38 states and 48 transitions. [2020-10-19 18:53:01,342 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-10-19 18:53:01,343 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:53:01,343 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:53:01,344 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:53:01,345 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 18:53:01,345 INFO L794 eck$LassoCheckResult]: Stem: 1037#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(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1013#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_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~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_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1014#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1011#L71 base2flt_#res := base2flt_~__retres4~0; 1012#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1036#L21-1 assume !(0 == base2flt_~m % 4294967296); 1000#L27-1 assume base2flt_~m % 4294967296 < 16777216; 1001#L39-3 assume !false; 1035#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1023#L39-2 assume !(base2flt_~m % 4294967296 < 16777216); 1016#L65-1 base2flt_~m := ~bitwiseAnd(base2flt_~m, ~bitwiseComplement(16777216));base2flt_~res~0 := ~bitwiseOr(base2flt_~m, 16777216 * (128 + base2flt_~e));base2flt_~__retres4~0 := base2flt_~res~0; 1006#L71-1 base2flt_#res := base2flt_~__retres4~0; 1007#L72-1 main_#t~ret12 := base2flt_#res;main_~one~0 := main_#t~ret12;havoc main_#t~ret12;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; 1033#L21-2 assume !(0 == base2flt_~m % 4294967296); 1019#L27-2 assume base2flt_~m % 4294967296 < 16777216; 1021#L39-5 [2020-10-19 18:53:01,345 INFO L796 eck$LassoCheckResult]: Loop: 1021#L39-5 assume !false; 1031#L30-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1032#L39-4 assume base2flt_~m % 4294967296 < 16777216; 1021#L39-5 [2020-10-19 18:53:01,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:53:01,346 INFO L82 PathProgramCache]: Analyzing trace with hash 793003697, now seen corresponding path program 1 times [2020-10-19 18:53:01,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:53:01,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748221198] [2020-10-19 18:53:01,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:53:01,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:53:01,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:53:01,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748221198] [2020-10-19 18:53:01,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:53:01,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:53:01,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393457359] [2020-10-19 18:53:01,425 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-19 18:53:01,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:53:01,426 INFO L82 PathProgramCache]: Analyzing trace with hash 173971, now seen corresponding path program 1 times [2020-10-19 18:53:01,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:53:01,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602047553] [2020-10-19 18:53:01,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:53:01,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:53:01,431 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:53:01,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:53:01,434 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:53:01,435 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:53:01,455 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:53:01,455 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:53:01,455 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:53:01,455 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:53:01,455 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:53:01,455 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:53:01,455 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:53:01,455 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:53:01,456 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration5_Loop [2020-10-19 18:53:01,456 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:53:01,456 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:53:01,457 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:53:01,463 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:53:01,521 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:53:01,521 INFO L404 LassoAnalysis]: Checking for nontermination... 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) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:53:01,531 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:53:01,531 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 18:53:01,565 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 18:53:01,565 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:53:01,573 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:53:01,573 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 25 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:53:01,617 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:53:01,617 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:53:01,648 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:53:01,650 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:53:01,650 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:53:01,650 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:53:01,650 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:53:01,650 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:53:01,650 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:53:01,650 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:53:01,650 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:53:01,650 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration5_Loop [2020-10-19 18:53:01,651 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:53:01,651 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:53:01,652 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:53:01,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:53:01,732 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:53:01,732 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:53:01,742 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 [2020-10-19 18:53:01,744 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:53:01,744 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:53:01,745 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:53:01,745 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:53:01,745 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:53:01,748 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:53:01,748 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:53:01,751 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:53:01,796 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 [2020-10-19 18:53:01,797 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:53:01,798 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:53:01,798 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:53:01,798 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:53:01,798 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:53:01,799 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:53:01,799 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:53:01,802 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:53:01,806 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:53:01,806 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 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:53:01,809 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:53:01,809 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:53:01,810 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:53:01,810 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 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:53:01,839 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:53:01,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:53:01,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:53:01,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:53:01,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:53:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:53:01,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:53:01,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:53:01,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:53:01,913 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 [2020-10-19 18:53:01,913 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 38 states and 48 transitions. cyclomatic complexity: 15 Second operand 4 states. [2020-10-19 18:53:01,927 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 38 states and 48 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 56 states and 69 transitions. Complement of second has 5 states. [2020-10-19 18:53:01,927 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 [2020-10-19 18:53:01,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-19 18:53:01,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2020-10-19 18:53:01,928 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 15 letters. Loop has 3 letters. [2020-10-19 18:53:01,928 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:53:01,929 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 18 letters. Loop has 3 letters. [2020-10-19 18:53:01,929 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:53:01,929 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 15 letters. Loop has 6 letters. [2020-10-19 18:53:01,930 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:53:01,930 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 69 transitions. [2020-10-19 18:53:01,931 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-10-19 18:53:01,931 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 53 states and 65 transitions. [2020-10-19 18:53:01,931 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2020-10-19 18:53:01,932 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2020-10-19 18:53:01,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 65 transitions. [2020-10-19 18:53:01,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:53:01,933 INFO L691 BuchiCegarLoop]: Abstraction has 53 states and 65 transitions. [2020-10-19 18:53:01,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states and 65 transitions. [2020-10-19 18:53:01,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 41. [2020-10-19 18:53:01,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-19 18:53:01,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2020-10-19 18:53:01,936 INFO L714 BuchiCegarLoop]: Abstraction has 41 states and 52 transitions. [2020-10-19 18:53:01,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:53:01,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:53:01,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:53:01,937 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand 4 states. [2020-10-19 18:53:02,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:53:02,034 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2020-10-19 18:53:02,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:53:02,035 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 61 transitions. [2020-10-19 18:53:02,036 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-10-19 18:53:02,037 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 49 states and 61 transitions. [2020-10-19 18:53:02,037 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2020-10-19 18:53:02,038 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2020-10-19 18:53:02,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 61 transitions. [2020-10-19 18:53:02,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:53:02,039 INFO L691 BuchiCegarLoop]: Abstraction has 49 states and 61 transitions. [2020-10-19 18:53:02,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 61 transitions. [2020-10-19 18:53:02,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2020-10-19 18:53:02,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-19 18:53:02,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2020-10-19 18:53:02,043 INFO L714 BuchiCegarLoop]: Abstraction has 43 states and 55 transitions. [2020-10-19 18:53:02,043 INFO L594 BuchiCegarLoop]: Abstraction has 43 states and 55 transitions. [2020-10-19 18:53:02,043 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-10-19 18:53:02,043 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 43 states and 55 transitions. [2020-10-19 18:53:02,045 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-10-19 18:53:02,046 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:53:02,046 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:53:02,047 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:53:02,047 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 18:53:02,048 INFO L794 eck$LassoCheckResult]: Stem: 1297#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(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1272#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_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~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_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1273#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1270#L71 base2flt_#res := base2flt_~__retres4~0; 1271#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1296#L21-1 assume !(0 == base2flt_~m % 4294967296); 1259#L27-1 assume base2flt_~m % 4294967296 < 16777216; 1260#L39-3 assume !false; 1295#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1282#L39-2 assume base2flt_~m % 4294967296 < 16777216; 1284#L39-3 assume !false; 1294#L30-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 1265#L71-1 base2flt_#res := base2flt_~__retres4~0; 1266#L72-1 main_#t~ret12 := base2flt_#res;main_~one~0 := main_#t~ret12;havoc main_#t~ret12;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; 1293#L21-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1261#L71-2 base2flt_#res := base2flt_~__retres4~0; 1262#L72-2 main_#t~ret13 := base2flt_#res;main_~a~0 := main_#t~ret13;havoc main_#t~ret13;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; 1289#L21-3 assume !(0 == base2flt_~m % 4294967296); 1276#L27-3 assume !(base2flt_~m % 4294967296 < 16777216); 1264#L49-11 [2020-10-19 18:53:02,055 INFO L796 eck$LassoCheckResult]: Loop: 1264#L49-11 assume !false; 1281#L50-3 assume base2flt_~m % 4294967296 >= 33554432; 1263#L51-3 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 1264#L49-11 [2020-10-19 18:53:02,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:53:02,056 INFO L82 PathProgramCache]: Analyzing trace with hash -399436914, now seen corresponding path program 1 times [2020-10-19 18:53:02,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:53:02,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669606559] [2020-10-19 18:53:02,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:53:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:53:02,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:53:02,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669606559] [2020-10-19 18:53:02,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039090670] [2020-10-19 18:53:02,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:53:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:53:02,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:53:02,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:53:02,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:53:02,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:53:02,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-10-19 18:53:02,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815281546] [2020-10-19 18:53:02,185 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-19 18:53:02,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:53:02,185 INFO L82 PathProgramCache]: Analyzing trace with hash 262289, now seen corresponding path program 1 times [2020-10-19 18:53:02,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:53:02,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817643867] [2020-10-19 18:53:02,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:53:02,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:53:02,192 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:53:02,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:53:02,196 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:53:02,198 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:53:02,221 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:53:02,221 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:53:02,222 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:53:02,222 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:53:02,222 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:53:02,222 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:53:02,222 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:53:02,222 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:53:02,223 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration6_Loop [2020-10-19 18:53:02,223 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:53:02,223 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:53:02,224 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:53:02,231 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:53:02,307 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:53:02,308 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:53:02,311 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:53:02,311 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:53:02,353 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:53:02,353 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:53:02,390 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:53:02,392 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:53:02,393 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:53:02,393 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:53:02,393 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:53:02,393 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:53:02,393 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:53:02,393 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:53:02,393 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:53:02,393 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration6_Loop [2020-10-19 18:53:02,394 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:53:02,394 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:53:02,396 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:53:02,403 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:53:02,480 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:53:02,480 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:53:02,483 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 [2020-10-19 18:53:02,485 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:53:02,485 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:53:02,486 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:53:02,486 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:53:02,486 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:53:02,487 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:53:02,487 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:53:02,490 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:53:02,493 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:53:02,493 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 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:53:02,497 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:53:02,497 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:53:02,497 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:53:02,497 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 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:53:02,531 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:53:02,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:53:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:53:02,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:53:02,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:53:02,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:53:02,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:53:02,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:53:02,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:53:02,577 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 [2020-10-19 18:53:02,577 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 43 states and 55 transitions. cyclomatic complexity: 17 Second operand 3 states. [2020-10-19 18:53:02,584 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 43 states and 55 transitions. cyclomatic complexity: 17. Second operand 3 states. Result 46 states and 59 transitions. Complement of second has 4 states. [2020-10-19 18:53:02,585 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 [2020-10-19 18:53:02,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:53:02,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions. [2020-10-19 18:53:02,586 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 41 transitions. Stem has 19 letters. Loop has 3 letters. [2020-10-19 18:53:02,587 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:53:02,587 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 41 transitions. Stem has 22 letters. Loop has 3 letters. [2020-10-19 18:53:02,587 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:53:02,587 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 41 transitions. Stem has 19 letters. Loop has 6 letters. [2020-10-19 18:53:02,587 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:53:02,588 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 59 transitions. [2020-10-19 18:53:02,589 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-19 18:53:02,590 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 40 states and 51 transitions. [2020-10-19 18:53:02,590 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2020-10-19 18:53:02,590 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2020-10-19 18:53:02,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 51 transitions. [2020-10-19 18:53:02,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:53:02,590 INFO L691 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2020-10-19 18:53:02,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states and 51 transitions. [2020-10-19 18:53:02,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-19 18:53:02,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-19 18:53:02,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2020-10-19 18:53:02,594 INFO L714 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2020-10-19 18:53:02,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:53:02,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:53:02,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:53:02,595 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand 5 states. [2020-10-19 18:53:02,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:53:02,627 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2020-10-19 18:53:02,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:53:02,628 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 56 transitions. [2020-10-19 18:53:02,628 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-19 18:53:02,629 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 44 states and 54 transitions. [2020-10-19 18:53:02,629 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2020-10-19 18:53:02,629 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2020-10-19 18:53:02,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 54 transitions. [2020-10-19 18:53:02,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:53:02,629 INFO L691 BuchiCegarLoop]: Abstraction has 44 states and 54 transitions. [2020-10-19 18:53:02,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 54 transitions. [2020-10-19 18:53:02,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-10-19 18:53:02,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-19 18:53:02,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2020-10-19 18:53:02,633 INFO L714 BuchiCegarLoop]: Abstraction has 40 states and 50 transitions. [2020-10-19 18:53:02,633 INFO L594 BuchiCegarLoop]: Abstraction has 40 states and 50 transitions. [2020-10-19 18:53:02,633 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-10-19 18:53:02,633 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 50 transitions. [2020-10-19 18:53:02,634 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-19 18:53:02,634 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:53:02,634 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:53:02,635 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:53:02,635 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 18:53:02,635 INFO L794 eck$LassoCheckResult]: Stem: 1608#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(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1586#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_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~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_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1587#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1583#L71 base2flt_#res := base2flt_~__retres4~0; 1584#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1607#L21-1 assume !(0 == base2flt_~m % 4294967296); 1574#L27-1 assume base2flt_~m % 4294967296 < 16777216; 1575#L39-3 assume !false; 1606#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1594#L39-2 assume base2flt_~m % 4294967296 < 16777216; 1595#L39-3 assume !false; 1611#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1613#L39-2 assume !(base2flt_~m % 4294967296 < 16777216); 1588#L65-1 base2flt_~m := ~bitwiseAnd(base2flt_~m, ~bitwiseComplement(16777216));base2flt_~res~0 := ~bitwiseOr(base2flt_~m, 16777216 * (128 + base2flt_~e));base2flt_~__retres4~0 := base2flt_~res~0; 1578#L71-1 base2flt_#res := base2flt_~__retres4~0; 1579#L72-1 main_#t~ret12 := base2flt_#res;main_~one~0 := main_#t~ret12;havoc main_#t~ret12;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; 1604#L21-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1576#L71-2 base2flt_#res := base2flt_~__retres4~0; 1577#L72-2 main_#t~ret13 := base2flt_#res;main_~a~0 := main_#t~ret13;havoc main_#t~ret13;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; 1600#L21-3 assume !(0 == base2flt_~m % 4294967296); 1589#L27-3 assume base2flt_~m % 4294967296 < 16777216; 1590#L39-7 [2020-10-19 18:53:02,636 INFO L796 eck$LassoCheckResult]: Loop: 1590#L39-7 assume !false; 1598#L30-3 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1599#L39-6 assume base2flt_~m % 4294967296 < 16777216; 1590#L39-7 [2020-10-19 18:53:02,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:53:02,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1485728147, now seen corresponding path program 1 times [2020-10-19 18:53:02,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:53:02,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867705747] [2020-10-19 18:53:02,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:53:02,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:53:02,700 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:53:02,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867705747] [2020-10-19 18:53:02,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238992011] [2020-10-19 18:53:02,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:53:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:53:02,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-19 18:53:02,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:53:02,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:53:02,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:53:02,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-19 18:53:02,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27698713] [2020-10-19 18:53:02,811 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-19 18:53:02,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:53:02,811 INFO L82 PathProgramCache]: Analyzing trace with hash 236530, now seen corresponding path program 1 times [2020-10-19 18:53:02,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:53:02,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748398521] [2020-10-19 18:53:02,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:53:02,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:53:02,816 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:53:02,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:53:02,818 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:53:02,820 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:53:02,840 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:53:02,840 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:53:02,840 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:53:02,841 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:53:02,841 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:53:02,841 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:53:02,841 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:53:02,841 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:53:02,841 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration7_Loop [2020-10-19 18:53:02,841 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:53:02,841 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:53:02,843 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:53:02,851 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:53:02,903 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:53:02,904 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:53:02,913 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:53:02,913 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:53:02,943 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 18:53:02,943 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 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:53:02,948 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:53:02,948 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:53:02,973 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:53:02,973 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 18:53:02,999 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:53:03,001 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:53:03,001 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:53:03,001 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:53:03,001 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:53:03,001 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:53:03,001 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:53:03,001 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:53:03,001 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:53:03,002 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration7_Loop [2020-10-19 18:53:03,002 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:53:03,002 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:53:03,003 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:53:03,012 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:53:03,085 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:53:03,085 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:53:03,089 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 [2020-10-19 18:53:03,090 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:53:03,090 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:53:03,091 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:53:03,091 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:53:03,091 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:53:03,092 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:53:03,092 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:53:03,095 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 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:53:03,117 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 [2020-10-19 18:53:03,118 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:53:03,119 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:53:03,119 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:53:03,119 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:53:03,119 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:53:03,120 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:53:03,120 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:53:03,123 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:53:03,129 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:53:03,129 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 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:53:03,134 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:53:03,134 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:53:03,134 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:53:03,134 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 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:53:03,155 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:53:03,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:53:03,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:53:03,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:53:03,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:53:03,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:53:03,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:53:03,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:53:03,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:53:03,239 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 [2020-10-19 18:53:03,239 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 50 transitions. cyclomatic complexity: 14 Second operand 4 states. [2020-10-19 18:53:03,245 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 50 transitions. cyclomatic complexity: 14. Second operand 4 states. Result 44 states and 54 transitions. Complement of second has 4 states. [2020-10-19 18:53:03,246 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 [2020-10-19 18:53:03,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-19 18:53:03,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 38 transitions. [2020-10-19 18:53:03,246 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 21 letters. Loop has 3 letters. [2020-10-19 18:53:03,247 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:53:03,247 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 24 letters. Loop has 3 letters. [2020-10-19 18:53:03,247 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:53:03,247 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 21 letters. Loop has 6 letters. [2020-10-19 18:53:03,248 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:53:03,248 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 54 transitions. [2020-10-19 18:53:03,249 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 18:53:03,249 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 0 states and 0 transitions. [2020-10-19 18:53:03,249 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-19 18:53:03,249 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-19 18:53:03,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-19 18:53:03,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:53:03,250 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:53:03,250 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:53:03,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:53:03,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:53:03,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:53:03,251 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 6 states. [2020-10-19 18:53:03,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:53:03,251 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-10-19 18:53:03,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-19 18:53:03,251 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-10-19 18:53:03,251 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 18:53:03,252 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-10-19 18:53:03,252 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-19 18:53:03,252 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-19 18:53:03,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-19 18:53:03,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:53:03,253 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:53:03,253 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:53:03,253 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:53:03,253 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-10-19 18:53:03,254 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-19 18:53:03,254 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 18:53:03,254 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-19 18:53:03,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.10 06:53:03 BoogieIcfgContainer [2020-10-19 18:53:03,261 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-19 18:53:03,262 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:53:03,262 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:53:03,262 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:53:03,263 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:52:57" (3/4) ... [2020-10-19 18:53:03,266 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 18:53:03,267 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:53:03,269 INFO L168 Benchmark]: Toolchain (without parser) took 6709.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 214.4 MB). Free memory was 955.9 MB in the beginning and 863.2 MB in the end (delta: 92.7 MB). Peak memory consumption was 307.1 MB. Max. memory is 11.5 GB. [2020-10-19 18:53:03,270 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:53:03,271 INFO L168 Benchmark]: CACSL2BoogieTranslator took 431.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 955.9 MB in the beginning and 1.1 GB in the end (delta: -160.7 MB). Peak memory consumption was 25.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:53:03,272 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.30 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:53:03,272 INFO L168 Benchmark]: Boogie Preprocessor took 39.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:53:03,273 INFO L168 Benchmark]: RCFGBuilder took 701.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.0 MB). Peak memory consumption was 33.0 MB. Max. memory is 11.5 GB. [2020-10-19 18:53:03,274 INFO L168 Benchmark]: BuchiAutomizer took 5469.02 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 87.0 MB). Free memory was 1.1 GB in the beginning and 863.2 MB in the end (delta: 213.7 MB). Peak memory consumption was 300.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:53:03,275 INFO L168 Benchmark]: Witness Printer took 5.19 ms. Allocated memory is still 1.2 GB. Free memory is still 863.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:53:03,278 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 431.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 955.9 MB in the beginning and 1.1 GB in the end (delta: -160.7 MB). Peak memory consumption was 25.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 53.30 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 39.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 701.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.0 MB). Peak memory consumption was 33.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 5469.02 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 87.0 MB). Free memory was 1.1 GB in the beginning and 863.2 MB in the end (delta: 213.7 MB). Peak memory consumption was 300.8 MB. Max. memory is 11.5 GB. * Witness Printer took 5.19 ms. Allocated memory is still 1.2 GB. Free memory is still 863.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 13 terminating modules (6 trivial, 7 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * e + 253 and consists of 4 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. 6 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.4s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 4.0s. Construction of modules took 0.3s. Büchi inclusion checks took 0.8s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 9. Automata minimization 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 72 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 43 states and ocurred in iteration 5. Nontrivial modules had stage [7, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 528 SDtfs, 345 SDslu, 149 SDs, 0 SdLazy, 176 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT6 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf95 lsp57 ukn100 mio100 lsp100 div575 bol100 ite100 ukn100 eq132 hnf44 smp92 dnf100 smp100 tf105 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 19ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...