./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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_1-2a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d3e65a9c88991657ab2059827ecd5dfb9aad85be .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 04:27:45,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 04:27:45,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 04:27:45,075 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 04:27:45,075 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 04:27:45,081 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 04:27:45,085 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 04:27:45,092 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 04:27:45,100 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 04:27:45,104 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 04:27:45,106 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 04:27:45,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 04:27:45,108 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 04:27:45,116 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 04:27:45,118 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 04:27:45,120 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 04:27:45,121 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 04:27:45,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 04:27:45,130 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 04:27:45,134 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 04:27:45,138 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 04:27:45,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 04:27:45,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 04:27:45,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 04:27:45,147 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 04:27:45,147 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 04:27:45,148 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 04:27:45,149 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 04:27:45,150 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 04:27:45,151 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 04:27:45,152 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 04:27:45,153 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 04:27:45,154 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 04:27:45,155 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 04:27:45,156 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 04:27:45,157 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 04:27:45,158 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 04:27:45,158 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 04:27:45,158 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 04:27:45,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 04:27:45,160 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 04:27:45,162 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-26 04:27:45,193 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 04:27:45,194 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 04:27:45,195 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 04:27:45,196 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 04:27:45,196 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 04:27:45,196 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-26 04:27:45,197 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-26 04:27:45,197 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-26 04:27:45,197 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-26 04:27:45,198 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-26 04:27:45,198 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-26 04:27:45,198 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 04:27:45,199 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 04:27:45,199 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 04:27:45,199 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 04:27:45,200 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 04:27:45,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 04:27:45,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-26 04:27:45,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-26 04:27:45,201 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-26 04:27:45,201 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 04:27:45,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 04:27:45,202 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-26 04:27:45,202 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 04:27:45,202 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-26 04:27:45,203 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 04:27:45,203 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 04:27:45,203 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-26 04:27:45,203 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 04:27:45,204 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 04:27:45,204 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 04:27:45,204 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-26 04:27:45,206 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-26 04:27:45,206 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d3e65a9c88991657ab2059827ecd5dfb9aad85be [2020-10-26 04:27:45,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 04:27:45,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 04:27:45,654 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 04:27:45,655 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 04:27:45,658 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 04:27:45,660 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c [2020-10-26 04:27:45,750 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f75ce68c1/421e5350eced44a586939d4fe1215df9/FLAG079333d98 [2020-10-26 04:27:46,541 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 04:27:46,542 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c [2020-10-26 04:27:46,551 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f75ce68c1/421e5350eced44a586939d4fe1215df9/FLAG079333d98 [2020-10-26 04:27:46,836 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f75ce68c1/421e5350eced44a586939d4fe1215df9 [2020-10-26 04:27:46,840 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 04:27:46,848 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 04:27:46,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 04:27:46,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 04:27:46,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 04:27:46,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:27:46" (1/1) ... [2020-10-26 04:27:46,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31319526 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:27:46, skipping insertion in model container [2020-10-26 04:27:46,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:27:46" (1/1) ... [2020-10-26 04:27:46,869 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 04:27:46,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 04:27:47,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:27:47,183 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 04:27:47,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:27:47,310 INFO L208 MainTranslator]: Completed translation [2020-10-26 04:27:47,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:27:47 WrapperNode [2020-10-26 04:27:47,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 04:27:47,312 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 04:27:47,312 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 04:27:47,312 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 04:27:47,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:27:47" (1/1) ... [2020-10-26 04:27:47,334 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:27:47" (1/1) ... [2020-10-26 04:27:47,368 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 04:27:47,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 04:27:47,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 04:27:47,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 04:27:47,380 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:27:47" (1/1) ... [2020-10-26 04:27:47,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:27:47" (1/1) ... [2020-10-26 04:27:47,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:27:47" (1/1) ... [2020-10-26 04:27:47,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:27:47" (1/1) ... [2020-10-26 04:27:47,395 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:27:47" (1/1) ... [2020-10-26 04:27:47,414 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:27:47" (1/1) ... [2020-10-26 04:27:47,417 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:27:47" (1/1) ... [2020-10-26 04:27:47,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 04:27:47,430 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 04:27:47,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 04:27:47,430 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 04:27:47,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:27:47" (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 [2020-10-26 04:27:47,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 04:27:47,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 04:27:47,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 04:27:47,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 04:27:48,410 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 04:27:48,411 INFO L298 CfgBuilder]: Removed 38 assume(true) statements. [2020-10-26 04:27:48,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:27:48 BoogieIcfgContainer [2020-10-26 04:27:48,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 04:27:48,415 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-26 04:27:48,415 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-26 04:27:48,419 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-26 04:27:48,420 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:27:48,420 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.10 04:27:46" (1/3) ... [2020-10-26 04:27:48,421 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3d16184b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 04:27:48, skipping insertion in model container [2020-10-26 04:27:48,422 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:27:48,422 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:27:47" (2/3) ... [2020-10-26 04:27:48,422 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3d16184b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 04:27:48, skipping insertion in model container [2020-10-26 04:27:48,423 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:27:48,423 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:27:48" (3/3) ... [2020-10-26 04:27:48,425 INFO L373 chiAutomizerObserver]: Analyzing ICFG soft_float_1-2a.c.cil.c [2020-10-26 04:27:48,547 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-26 04:27:48,547 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-26 04:27:48,548 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-26 04:27:48,548 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 04:27:48,548 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 04:27:48,548 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-26 04:27:48,548 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 04:27:48,549 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-26 04:27:48,596 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 94 states. [2020-10-26 04:27:48,629 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2020-10-26 04:27:48,630 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:27:48,630 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:27:48,638 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-26 04:27:48,638 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:27:48,639 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-26 04:27:48,639 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 94 states. [2020-10-26 04:27:48,653 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2020-10-26 04:27:48,653 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:27:48,653 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:27:48,654 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-26 04:27:48,654 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:27:48,671 INFO L794 eck$LassoCheckResult]: Stem: 46#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 15#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_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add~0, main_~zero~0, main_~sa~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~tmp___2~0, main_~tmp___3~0, main_~tmp___4~0, main_~tmp___5~0, main_~tmp___6~0, main_~tmp___7~0, main_~tmp___8~0, main_~tmp___9~0, main_~__retres23~0;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_add~0;havoc main_~zero~0;havoc main_~sa~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~tmp___2~0;havoc main_~tmp___3~0;havoc main_~tmp___4~0;havoc main_~tmp___5~0;havoc main_~tmp___6~0;havoc main_~tmp___7~0;havoc main_~tmp___8~0;havoc main_~tmp___9~0;havoc main_~__retres23~0;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; 49#L22true assume !(0 == base2flt_~m % 4294967296); 82#L28true assume !(base2flt_~m % 4294967296 < 16777216); 75#L50-2true [2020-10-26 04:27:48,671 INFO L796 eck$LassoCheckResult]: Loop: 75#L50-2true assume !false; 11#L51true assume base2flt_~m % 4294967296 >= 33554432; 42#L52true assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 75#L50-2true [2020-10-26 04:27:48,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:48,678 INFO L82 PathProgramCache]: Analyzing trace with hash 925696, now seen corresponding path program 1 times [2020-10-26 04:27:48,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:27:48,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310984758] [2020-10-26 04:27:48,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:27:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:48,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:27:48,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310984758] [2020-10-26 04:27:48,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:27:48,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 04:27:48,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761096985] [2020-10-26 04:27:48,901 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-26 04:27:48,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:48,902 INFO L82 PathProgramCache]: Analyzing trace with hash 74612, now seen corresponding path program 1 times [2020-10-26 04:27:48,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:27:48,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692841295] [2020-10-26 04:27:48,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:27:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:48,918 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:48,928 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:48,949 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:27:49,017 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:27:49,018 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:27:49,018 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:27:49,018 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:27:49,019 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:27:49,019 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:49,020 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:27:49,020 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:27:49,020 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-2a.c.cil.c_Iteration1_Loop [2020-10-26 04:27:49,020 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:27:49,021 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:27:49,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:49,061 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:49,189 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:27:49,190 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:49,203 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:27:49,203 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:27:49,254 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:27:49,255 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:49,296 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:27:49,301 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:27:49,301 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:27:49,301 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:27:49,301 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:27:49,301 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:27:49,301 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:49,302 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:27:49,302 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:27:49,302 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-2a.c.cil.c_Iteration1_Loop [2020-10-26 04:27:49,302 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:27:49,302 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:27:49,304 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:49,313 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:49,469 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:27:49,475 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:49,482 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 [2020-10-26 04:27:49,485 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:27:49,485 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:27:49,486 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:27:49,486 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:27:49,486 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:27:49,491 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:27:49,491 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:27:49,498 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:27:49,508 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 04:27:49,508 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:49,514 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:27:49,514 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:27:49,515 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:27:49,516 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2020-10-26 04:27:49,551 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:27:49,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:49,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:49,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:27:49,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:27:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:49,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:27:49,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:27:49,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:27:49,643 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 [2020-10-26 04:27:49,645 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 94 states. Second operand 3 states. [2020-10-26 04:27:49,743 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 94 states.. Second operand 3 states. Result 272 states and 430 transitions. Complement of second has 6 states. [2020-10-26 04:27:49,744 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 [2020-10-26 04:27:49,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-26 04:27:49,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 281 transitions. [2020-10-26 04:27:49,750 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 281 transitions. Stem has 4 letters. Loop has 3 letters. [2020-10-26 04:27:49,751 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:49,751 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 281 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-26 04:27:49,752 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:49,752 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 281 transitions. Stem has 4 letters. Loop has 6 letters. [2020-10-26 04:27:49,752 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:49,753 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 272 states and 430 transitions. [2020-10-26 04:27:49,784 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2020-10-26 04:27:49,791 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 272 states to 57 states and 82 transitions. [2020-10-26 04:27:49,792 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 53 [2020-10-26 04:27:49,793 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54 [2020-10-26 04:27:49,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 82 transitions. [2020-10-26 04:27:49,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:27:49,794 INFO L691 BuchiCegarLoop]: Abstraction has 57 states and 82 transitions. [2020-10-26 04:27:49,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states and 82 transitions. [2020-10-26 04:27:49,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 46. [2020-10-26 04:27:49,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-26 04:27:49,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 70 transitions. [2020-10-26 04:27:49,829 INFO L714 BuchiCegarLoop]: Abstraction has 46 states and 70 transitions. [2020-10-26 04:27:49,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:27:49,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 04:27:49,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 04:27:49,835 INFO L87 Difference]: Start difference. First operand 46 states and 70 transitions. Second operand 3 states. [2020-10-26 04:27:49,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:27:49,896 INFO L93 Difference]: Finished difference Result 24 states and 31 transitions. [2020-10-26 04:27:49,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 04:27:49,897 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2020-10-26 04:27:49,899 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-10-26 04:27:49,899 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 24 states and 31 transitions. [2020-10-26 04:27:49,899 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2020-10-26 04:27:49,900 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2020-10-26 04:27:49,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 31 transitions. [2020-10-26 04:27:49,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 04:27:49,900 INFO L691 BuchiCegarLoop]: Abstraction has 24 states and 31 transitions. [2020-10-26 04:27:49,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 31 transitions. [2020-10-26 04:27:49,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-26 04:27:49,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-26 04:27:49,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2020-10-26 04:27:49,903 INFO L714 BuchiCegarLoop]: Abstraction has 24 states and 31 transitions. [2020-10-26 04:27:49,904 INFO L594 BuchiCegarLoop]: Abstraction has 24 states and 31 transitions. [2020-10-26 04:27:49,904 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-26 04:27:49,904 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 31 transitions. [2020-10-26 04:27:49,905 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-10-26 04:27:49,905 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:27:49,905 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:27:49,906 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-26 04:27:49,906 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:27:49,906 INFO L794 eck$LassoCheckResult]: Stem: 503#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 501#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_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add~0, main_~zero~0, main_~sa~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~tmp___2~0, main_~tmp___3~0, main_~tmp___4~0, main_~tmp___5~0, main_~tmp___6~0, main_~tmp___7~0, main_~tmp___8~0, main_~tmp___9~0, main_~__retres23~0;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_add~0;havoc main_~zero~0;havoc main_~sa~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~tmp___2~0;havoc main_~tmp___3~0;havoc main_~tmp___4~0;havoc main_~tmp___5~0;havoc main_~tmp___6~0;havoc main_~tmp___7~0;havoc main_~tmp___8~0;havoc main_~tmp___9~0;havoc main_~__retres23~0;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; 502#L22 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 497#L72 base2flt_#res := base2flt_~__retres4~0; 498#L73 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 500#L22-1 assume !(0 == base2flt_~m % 4294967296); 485#L28-1 assume !(base2flt_~m % 4294967296 < 16777216); 486#L50-5 [2020-10-26 04:27:49,907 INFO L796 eck$LassoCheckResult]: Loop: 486#L50-5 assume !false; 493#L51-1 assume base2flt_~m % 4294967296 >= 33554432; 494#L52-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 486#L50-5 [2020-10-26 04:27:49,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:49,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1806627809, now seen corresponding path program 1 times [2020-10-26 04:27:49,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:27:49,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908059448] [2020-10-26 04:27:49,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:27:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:49,944 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:49,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:49,963 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:49,970 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:27:49,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:49,971 INFO L82 PathProgramCache]: Analyzing trace with hash 137171, now seen corresponding path program 1 times [2020-10-26 04:27:49,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:27:49,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993185183] [2020-10-26 04:27:49,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:27:49,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:49,980 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:49,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:49,987 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:49,990 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:27:49,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:49,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1013979123, now seen corresponding path program 1 times [2020-10-26 04:27:49,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:27:49,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104630213] [2020-10-26 04:27:49,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:27:50,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:50,016 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:50,059 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:50,073 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:27:50,098 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:27:50,098 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:27:50,098 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:27:50,098 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:27:50,098 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:27:50,099 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:50,099 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:27:50,099 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:27:50,099 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-2a.c.cil.c_Iteration2_Loop [2020-10-26 04:27:50,099 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:27:50,100 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:27:50,101 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:50,109 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:50,210 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:27:50,211 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:27:50,217 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:27:50,218 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:50,260 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:27:50,260 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=-1} Honda state: {ULTIMATE.start_base2flt_~m=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:27:50,269 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:27:50,269 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:27:50,314 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:27:50,314 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:50,349 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:27:50,351 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:27:50,351 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:27:50,351 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:27:50,351 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:27:50,351 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:27:50,351 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:50,351 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:27:50,351 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:27:50,352 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-2a.c.cil.c_Iteration2_Loop [2020-10-26 04:27:50,352 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:27:50,352 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:27:50,353 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:50,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:50,444 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:27:50,444 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:27:50,457 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 [2020-10-26 04:27:50,459 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:27:50,459 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:27:50,459 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:27:50,460 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:27:50,460 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:27:50,462 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:27:50,463 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:50,467 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:27:50,506 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 [2020-10-26 04:27:50,508 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:27:50,508 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:27:50,508 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:27:50,508 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:27:50,508 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:27:50,510 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:27:50,510 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:27:50,513 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:50,517 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 04:27:50,517 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:50,524 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:27:50,525 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:27:50,525 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:27:50,525 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2020-10-26 04:27:50,561 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:27:50,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:50,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:27:50,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:27:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:50,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:27:50,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:27:50,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:27:50,631 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 [2020-10-26 04:27:50,632 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 31 transitions. cyclomatic complexity: 11 Second operand 3 states. [2020-10-26 04:27:50,657 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 31 transitions. cyclomatic complexity: 11. Second operand 3 states. Result 41 states and 51 transitions. Complement of second has 5 states. [2020-10-26 04:27:50,659 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 [2020-10-26 04:27:50,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-26 04:27:50,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 33 transitions. [2020-10-26 04:27:50,659 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-26 04:27:50,660 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:50,660 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 10 letters. Loop has 3 letters. [2020-10-26 04:27:50,660 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:50,660 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 7 letters. Loop has 6 letters. [2020-10-26 04:27:50,661 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:50,661 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 51 transitions. [2020-10-26 04:27:50,662 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2020-10-26 04:27:50,666 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 38 states and 47 transitions. [2020-10-26 04:27:50,666 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2020-10-26 04:27:50,666 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2020-10-26 04:27:50,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 47 transitions. [2020-10-26 04:27:50,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:27:50,667 INFO L691 BuchiCegarLoop]: Abstraction has 38 states and 47 transitions. [2020-10-26 04:27:50,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 47 transitions. [2020-10-26 04:27:50,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2020-10-26 04:27:50,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-26 04:27:50,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-10-26 04:27:50,673 INFO L714 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-10-26 04:27:50,673 INFO L594 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-10-26 04:27:50,673 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-26 04:27:50,673 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 35 transitions. [2020-10-26 04:27:50,674 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-10-26 04:27:50,674 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:27:50,674 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:27:50,675 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-26 04:27:50,688 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:27:50,705 INFO L794 eck$LassoCheckResult]: Stem: 621#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 619#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_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add~0, main_~zero~0, main_~sa~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~tmp___2~0, main_~tmp___3~0, main_~tmp___4~0, main_~tmp___5~0, main_~tmp___6~0, main_~tmp___7~0, main_~tmp___8~0, main_~tmp___9~0, main_~__retres23~0;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_add~0;havoc main_~zero~0;havoc main_~sa~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~tmp___2~0;havoc main_~tmp___3~0;havoc main_~tmp___4~0;havoc main_~tmp___5~0;havoc main_~tmp___6~0;havoc main_~tmp___7~0;havoc main_~tmp___8~0;havoc main_~tmp___9~0;havoc main_~__retres23~0;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; 620#L22 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 615#L72 base2flt_#res := base2flt_~__retres4~0; 616#L73 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 618#L22-1 assume !(0 == base2flt_~m % 4294967296); 600#L28-1 assume base2flt_~m % 4294967296 < 16777216; 598#L40-3 [2020-10-26 04:27:50,705 INFO L796 eck$LassoCheckResult]: Loop: 598#L40-3 assume !false; 599#L31-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 602#L40-2 assume base2flt_~m % 4294967296 < 16777216; 598#L40-3 [2020-10-26 04:27:50,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:50,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1806627783, now seen corresponding path program 1 times [2020-10-26 04:27:50,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:27:50,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165812211] [2020-10-26 04:27:50,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:27:50,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:50,760 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:50,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:50,787 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:50,795 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:27:50,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:50,800 INFO L82 PathProgramCache]: Analyzing trace with hash 111412, now seen corresponding path program 1 times [2020-10-26 04:27:50,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:27:50,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578860878] [2020-10-26 04:27:50,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:27:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:50,815 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:50,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:50,818 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:50,820 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:27:50,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:50,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1013178798, now seen corresponding path program 1 times [2020-10-26 04:27:50,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:27:50,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060111460] [2020-10-26 04:27:50,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:27:50,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:50,839 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:50,855 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:50,861 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:27:50,890 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:27:50,890 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:27:50,890 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:27:50,890 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:27:50,890 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:27:50,890 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:50,890 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:27:50,891 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:27:50,891 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-2a.c.cil.c_Iteration3_Loop [2020-10-26 04:27:50,891 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:27:50,891 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:27:50,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:50,902 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:50,978 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:27:50,979 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:50,982 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:27:50,982 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:27:51,019 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:27:51,019 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=0} Honda state: {ULTIMATE.start_base2flt_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:27:51,030 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:27:51,031 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:51,075 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:27:51,075 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:27:51,116 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:27:51,118 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:27:51,118 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:27:51,118 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:27:51,118 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:27:51,118 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:27:51,119 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:51,119 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:27:51,119 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:27:51,119 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-2a.c.cil.c_Iteration3_Loop [2020-10-26 04:27:51,119 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:27:51,119 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:27:51,122 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:51,136 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:51,233 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:27:51,234 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:51,245 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 [2020-10-26 04:27:51,246 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:27:51,247 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:27:51,247 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:27:51,247 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:27:51,247 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:27:51,250 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:27:51,258 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:27:51,261 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:27:51,304 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 [2020-10-26 04:27:51,307 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:27:51,307 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:27:51,307 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:27:51,307 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:27:51,307 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:27:51,309 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:27:51,309 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:51,312 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:27:51,316 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 04:27:51,316 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:51,322 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:27:51,322 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:27:51,322 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:27:51,323 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2020-10-26 04:27:51,347 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:27:51,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:51,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:51,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:27:51,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:27:51,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:51,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:27:51,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:27:51,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:27:51,459 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 [2020-10-26 04:27:51,459 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 35 transitions. cyclomatic complexity: 12 Second operand 4 states. [2020-10-26 04:27:51,474 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 35 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 45 states and 56 transitions. Complement of second has 5 states. [2020-10-26 04:27:51,475 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 [2020-10-26 04:27:51,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-26 04:27:51,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 34 transitions. [2020-10-26 04:27:51,475 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 34 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-26 04:27:51,476 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:51,476 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 34 transitions. Stem has 10 letters. Loop has 3 letters. [2020-10-26 04:27:51,476 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:51,476 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 34 transitions. Stem has 7 letters. Loop has 6 letters. [2020-10-26 04:27:51,476 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:51,477 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 56 transitions. [2020-10-26 04:27:51,478 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-10-26 04:27:51,479 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 42 states and 52 transitions. [2020-10-26 04:27:51,479 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2020-10-26 04:27:51,480 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2020-10-26 04:27:51,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 52 transitions. [2020-10-26 04:27:51,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:27:51,480 INFO L691 BuchiCegarLoop]: Abstraction has 42 states and 52 transitions. [2020-10-26 04:27:51,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 52 transitions. [2020-10-26 04:27:51,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2020-10-26 04:27:51,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-26 04:27:51,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2020-10-26 04:27:51,484 INFO L714 BuchiCegarLoop]: Abstraction has 30 states and 39 transitions. [2020-10-26 04:27:51,484 INFO L594 BuchiCegarLoop]: Abstraction has 30 states and 39 transitions. [2020-10-26 04:27:51,484 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-26 04:27:51,484 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 39 transitions. [2020-10-26 04:27:51,485 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-10-26 04:27:51,485 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:27:51,485 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:27:51,486 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 04:27:51,486 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:27:51,486 INFO L794 eck$LassoCheckResult]: Stem: 747#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 745#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_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add~0, main_~zero~0, main_~sa~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~tmp___2~0, main_~tmp___3~0, main_~tmp___4~0, main_~tmp___5~0, main_~tmp___6~0, main_~tmp___7~0, main_~tmp___8~0, main_~tmp___9~0, main_~__retres23~0;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_add~0;havoc main_~zero~0;havoc main_~sa~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~tmp___2~0;havoc main_~tmp___3~0;havoc main_~tmp___4~0;havoc main_~tmp___5~0;havoc main_~tmp___6~0;havoc main_~tmp___7~0;havoc main_~tmp___8~0;havoc main_~tmp___9~0;havoc main_~__retres23~0;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; 746#L22 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 740#L72 base2flt_#res := base2flt_~__retres4~0; 741#L73 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 744#L22-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 732#L72-1 base2flt_#res := base2flt_~__retres4~0; 733#L73-1 main_#t~ret12 := base2flt_#res;main_~a~0 := main_#t~ret12;havoc main_#t~ret12;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 742#L22-2 assume !(0 == base2flt_~m % 4294967296); 718#L28-2 assume !(base2flt_~m % 4294967296 < 16777216); 719#L50-8 [2020-10-26 04:27:51,487 INFO L796 eck$LassoCheckResult]: Loop: 719#L50-8 assume !false; 730#L51-2 assume base2flt_~m % 4294967296 >= 33554432; 731#L52-2 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 719#L50-8 [2020-10-26 04:27:51,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:51,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1012956351, now seen corresponding path program 1 times [2020-10-26 04:27:51,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:27:51,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175210874] [2020-10-26 04:27:51,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:27:51,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:51,502 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:51,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:51,515 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:51,521 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:27:51,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:51,522 INFO L82 PathProgramCache]: Analyzing trace with hash 199730, now seen corresponding path program 1 times [2020-10-26 04:27:51,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:27:51,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844709942] [2020-10-26 04:27:51,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:27:51,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:51,529 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:51,534 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:51,536 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:27:51,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:51,537 INFO L82 PathProgramCache]: Analyzing trace with hash 542600884, now seen corresponding path program 1 times [2020-10-26 04:27:51,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:27:51,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912728361] [2020-10-26 04:27:51,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:27:51,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:51,555 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:51,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:51,570 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:51,577 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:27:51,617 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:27:51,617 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:27:51,617 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:27:51,617 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:27:51,617 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:27:51,617 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:51,617 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:27:51,618 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:27:51,618 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-2a.c.cil.c_Iteration4_Loop [2020-10-26 04:27:51,618 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:27:51,618 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:27:51,620 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:51,630 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:51,736 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:27:51,737 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:51,742 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:27:51,742 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:51,790 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:27:51,791 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:27:51,827 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:27:51,829 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:27:51,830 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:27:51,830 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:27:51,830 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:27:51,830 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:27:51,830 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:51,830 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:27:51,830 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:27:51,830 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-2a.c.cil.c_Iteration4_Loop [2020-10-26 04:27:51,830 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:27:51,830 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:27:51,833 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:51,880 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:51,974 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:27:51,975 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:27:51,984 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 [2020-10-26 04:27:51,986 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:27:51,986 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:27:51,986 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:27:51,986 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:27:51,986 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:27:51,988 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:27:51,988 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:51,991 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:27:51,994 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 04:27:51,994 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:27:52,004 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:27:52,004 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:27:52,004 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:27:52,004 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:52,038 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:27:52,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:52,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:52,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:27:52,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:27:52,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:52,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:27:52,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:27:52,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:27:52,091 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 [2020-10-26 04:27:52,092 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 30 states and 39 transitions. cyclomatic complexity: 13 Second operand 3 states. [2020-10-26 04:27:52,105 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 30 states and 39 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 33 states and 43 transitions. Complement of second has 4 states. [2020-10-26 04:27:52,106 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 [2020-10-26 04:27:52,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-26 04:27:52,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 31 transitions. [2020-10-26 04:27:52,106 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 10 letters. Loop has 3 letters. [2020-10-26 04:27:52,107 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:52,107 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 13 letters. Loop has 3 letters. [2020-10-26 04:27:52,107 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:52,107 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 10 letters. Loop has 6 letters. [2020-10-26 04:27:52,107 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:52,107 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 43 transitions. [2020-10-26 04:27:52,108 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-26 04:27:52,108 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 27 states and 35 transitions. [2020-10-26 04:27:52,109 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2020-10-26 04:27:52,109 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2020-10-26 04:27:52,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 35 transitions. [2020-10-26 04:27:52,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:27:52,110 INFO L691 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-10-26 04:27:52,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 35 transitions. [2020-10-26 04:27:52,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-26 04:27:52,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-26 04:27:52,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-10-26 04:27:52,113 INFO L714 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-10-26 04:27:52,113 INFO L594 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-10-26 04:27:52,113 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-26 04:27:52,113 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 35 transitions. [2020-10-26 04:27:52,113 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-26 04:27:52,114 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:27:52,114 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:27:52,114 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 04:27:52,114 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:27:52,115 INFO L794 eck$LassoCheckResult]: Stem: 865#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 863#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_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add~0, main_~zero~0, main_~sa~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~tmp___2~0, main_~tmp___3~0, main_~tmp___4~0, main_~tmp___5~0, main_~tmp___6~0, main_~tmp___7~0, main_~tmp___8~0, main_~tmp___9~0, main_~__retres23~0;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_add~0;havoc main_~zero~0;havoc main_~sa~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~tmp___2~0;havoc main_~tmp___3~0;havoc main_~tmp___4~0;havoc main_~tmp___5~0;havoc main_~tmp___6~0;havoc main_~tmp___7~0;havoc main_~tmp___8~0;havoc main_~tmp___9~0;havoc main_~__retres23~0;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; 864#L22 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 858#L72 base2flt_#res := base2flt_~__retres4~0; 859#L73 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 862#L22-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 850#L72-1 base2flt_#res := base2flt_~__retres4~0; 851#L73-1 main_#t~ret12 := base2flt_#res;main_~a~0 := main_#t~ret12;havoc main_#t~ret12;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 860#L22-2 assume !(0 == base2flt_~m % 4294967296); 839#L28-2 assume base2flt_~m % 4294967296 < 16777216; 840#L40-5 [2020-10-26 04:27:52,115 INFO L796 eck$LassoCheckResult]: Loop: 840#L40-5 assume !false; 856#L31-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 857#L40-4 assume base2flt_~m % 4294967296 < 16777216; 840#L40-5 [2020-10-26 04:27:52,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:52,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1012956325, now seen corresponding path program 1 times [2020-10-26 04:27:52,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:27:52,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528697386] [2020-10-26 04:27:52,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:27:52,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:52,128 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:52,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:52,138 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:52,143 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:27:52,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:52,144 INFO L82 PathProgramCache]: Analyzing trace with hash 173971, now seen corresponding path program 1 times [2020-10-26 04:27:52,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:27:52,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759128564] [2020-10-26 04:27:52,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:27:52,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:52,149 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:52,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:52,151 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:52,153 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:27:52,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:52,154 INFO L82 PathProgramCache]: Analyzing trace with hash 541800559, now seen corresponding path program 1 times [2020-10-26 04:27:52,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:27:52,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226812351] [2020-10-26 04:27:52,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:27:52,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:52,167 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:52,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:52,190 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:52,200 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:27:52,232 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:27:52,232 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:27:52,233 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:27:52,233 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:27:52,233 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:27:52,233 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:52,233 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:27:52,233 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:27:52,233 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-2a.c.cil.c_Iteration5_Loop [2020-10-26 04:27:52,233 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:27:52,233 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:27:52,235 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:52,243 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:52,371 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:27:52,371 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:27:52,375 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:27:52,375 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:27:52,418 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:27:52,418 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:52,461 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:27:52,463 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:27:52,463 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:27:52,463 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:27:52,463 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:27:52,463 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:27:52,463 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:52,463 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:27:52,463 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:27:52,464 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-2a.c.cil.c_Iteration5_Loop [2020-10-26 04:27:52,464 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:27:52,464 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:27:52,465 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:52,473 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:52,550 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:27:52,550 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:27:52,558 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 [2020-10-26 04:27:52,561 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:27:52,561 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:27:52,561 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:27:52,561 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:27:52,561 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:27:52,563 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:27:52,563 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:52,566 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:27:52,570 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 04:27:52,570 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:27:52,574 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:27:52,574 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:27:52,574 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:27:52,574 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:52,611 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:27:52,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:52,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:52,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:27:52,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:27:52,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:52,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:27:52,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:27:52,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:27:52,689 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 [2020-10-26 04:27:52,689 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 35 transitions. cyclomatic complexity: 11 Second operand 4 states. [2020-10-26 04:27:52,696 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 35 transitions. cyclomatic complexity: 11. Second operand 4 states. Result 31 states and 39 transitions. Complement of second has 4 states. [2020-10-26 04:27:52,697 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 [2020-10-26 04:27:52,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-26 04:27:52,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 28 transitions. [2020-10-26 04:27:52,698 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 28 transitions. Stem has 10 letters. Loop has 3 letters. [2020-10-26 04:27:52,698 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:52,698 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 28 transitions. Stem has 13 letters. Loop has 3 letters. [2020-10-26 04:27:52,699 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:52,699 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 28 transitions. Stem has 10 letters. Loop has 6 letters. [2020-10-26 04:27:52,699 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:52,699 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 39 transitions. [2020-10-26 04:27:52,700 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 04:27:52,700 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 0 states and 0 transitions. [2020-10-26 04:27:52,700 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-26 04:27:52,700 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-26 04:27:52,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-26 04:27:52,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 04:27:52,701 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:27:52,701 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:27:52,701 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:27:52,701 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-10-26 04:27:52,701 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-26 04:27:52,701 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 04:27:52,701 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-26 04:27:52,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.10 04:27:52 BoogieIcfgContainer [2020-10-26 04:27:52,710 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-26 04:27:52,711 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 04:27:52,711 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 04:27:52,711 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 04:27:52,712 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:27:48" (3/4) ... [2020-10-26 04:27:52,716 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-26 04:27:52,716 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 04:27:52,719 INFO L168 Benchmark]: Toolchain (without parser) took 5875.41 ms. Allocated memory was 48.2 MB in the beginning and 88.1 MB in the end (delta: 39.8 MB). Free memory was 23.9 MB in the beginning and 33.8 MB in the end (delta: -9.9 MB). Peak memory consumption was 32.9 MB. Max. memory is 16.1 GB. [2020-10-26 04:27:52,719 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 48.2 MB. Free memory is still 26.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:27:52,720 INFO L168 Benchmark]: CACSL2BoogieTranslator took 461.30 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 23.3 MB in the beginning and 33.8 MB in the end (delta: -10.6 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. [2020-10-26 04:27:52,721 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.58 ms. Allocated memory is still 60.8 MB. Free memory was 33.8 MB in the beginning and 31.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 04:27:52,722 INFO L168 Benchmark]: Boogie Preprocessor took 59.73 ms. Allocated memory is still 60.8 MB. Free memory was 31.5 MB in the beginning and 29.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 04:27:52,723 INFO L168 Benchmark]: RCFGBuilder took 983.67 ms. Allocated memory is still 60.8 MB. Free memory was 29.7 MB in the beginning and 29.6 MB in the end (delta: 68.9 kB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. [2020-10-26 04:27:52,724 INFO L168 Benchmark]: BuchiAutomizer took 4295.20 ms. Allocated memory was 60.8 MB in the beginning and 88.1 MB in the end (delta: 27.3 MB). Free memory was 29.3 MB in the beginning and 34.6 MB in the end (delta: -5.3 MB). Peak memory consumption was 20.4 MB. Max. memory is 16.1 GB. [2020-10-26 04:27:52,725 INFO L168 Benchmark]: Witness Printer took 5.81 ms. Allocated memory is still 88.1 MB. Free memory was 34.6 MB in the beginning and 33.8 MB in the end (delta: 790.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 04:27:52,729 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 48.2 MB. Free memory is still 26.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 461.30 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 23.3 MB in the beginning and 33.8 MB in the end (delta: -10.6 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.58 ms. Allocated memory is still 60.8 MB. Free memory was 33.8 MB in the beginning and 31.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.73 ms. Allocated memory is still 60.8 MB. Free memory was 31.5 MB in the beginning and 29.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 983.67 ms. Allocated memory is still 60.8 MB. Free memory was 29.7 MB in the beginning and 29.6 MB in the end (delta: 68.9 kB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 4295.20 ms. Allocated memory was 60.8 MB in the beginning and 88.1 MB in the end (delta: 27.3 MB). Free memory was 29.3 MB in the beginning and 34.6 MB in the end (delta: -5.3 MB). Peak memory consumption was 20.4 MB. Max. memory is 16.1 GB. * Witness Printer took 5.81 ms. Allocated memory is still 88.1 MB. Free memory was 34.6 MB in the beginning and 33.8 MB in the end (delta: 790.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (1 trivial, 5 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * e + 253 and consists of 4 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.1s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 3.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 34 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 30 states and ocurred in iteration 3. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 280 SDtfs, 247 SDslu, 27 SDs, 0 SdLazy, 38 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf95 lsp57 ukn100 mio100 lsp100 div583 bol100 ite100 ukn100 eq132 hnf44 smp92 dnf100 smp100 tf105 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 38ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...