./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/bitvector/soft_float_1-3a.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_1-3a.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 f4f20531c98faa0af8884f2ddaf47888911b3a46 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 04:27:46,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 04:27:46,395 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 04:27:46,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 04:27:46,429 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 04:27:46,430 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 04:27:46,432 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 04:27:46,434 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 04:27:46,437 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 04:27:46,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 04:27:46,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 04:27:46,441 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 04:27:46,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 04:27:46,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 04:27:46,444 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 04:27:46,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 04:27:46,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 04:27:46,448 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 04:27:46,450 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 04:27:46,452 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 04:27:46,454 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 04:27:46,455 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 04:27:46,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 04:27:46,458 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 04:27:46,461 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 04:27:46,462 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 04:27:46,462 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 04:27:46,463 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 04:27:46,464 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 04:27:46,465 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 04:27:46,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 04:27:46,466 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 04:27:46,467 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 04:27:46,468 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 04:27:46,469 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 04:27:46,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 04:27:46,471 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 04:27:46,471 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 04:27:46,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 04:27:46,472 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 04:27:46,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 04:27:46,477 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-26 04:27:46,527 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 04:27:46,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 04:27:46,531 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 04:27:46,532 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 04:27:46,532 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 04:27:46,532 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-26 04:27:46,532 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-26 04:27:46,533 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-26 04:27:46,533 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-26 04:27:46,533 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-26 04:27:46,534 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-26 04:27:46,534 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 04:27:46,535 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 04:27:46,535 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 04:27:46,535 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 04:27:46,536 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 04:27:46,536 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 04:27:46,536 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-26 04:27:46,536 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-26 04:27:46,536 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-26 04:27:46,537 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 04:27:46,537 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 04:27:46,537 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-26 04:27:46,537 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 04:27:46,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-26 04:27:46,538 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 04:27:46,538 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 04:27:46,539 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-26 04:27:46,539 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 04:27:46,539 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 04:27:46,539 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 04:27:46,540 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-26 04:27:46,542 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-26 04:27:46,542 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4f20531c98faa0af8884f2ddaf47888911b3a46 [2020-10-26 04:27:46,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 04:27:46,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 04:27:47,001 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 04:27:47,003 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 04:27:47,004 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 04:27:47,005 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2020-10-26 04:27:47,089 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c63d1ccf/13e95848c8b5402da3550a760eb8ad75/FLAG115f4e565 [2020-10-26 04:27:47,673 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 04:27:47,674 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2020-10-26 04:27:47,690 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c63d1ccf/13e95848c8b5402da3550a760eb8ad75/FLAG115f4e565 [2020-10-26 04:27:48,013 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c63d1ccf/13e95848c8b5402da3550a760eb8ad75 [2020-10-26 04:27:48,019 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 04:27:48,048 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 04:27:48,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 04:27:48,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 04:27:48,062 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 04:27:48,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:27:48" (1/1) ... [2020-10-26 04:27:48,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@334eeb9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:27:48, skipping insertion in model container [2020-10-26 04:27:48,094 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:27:48" (1/1) ... [2020-10-26 04:27:48,110 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 04:27:48,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 04:27:48,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:27:48,448 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 04:27:48,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:27:48,528 INFO L208 MainTranslator]: Completed translation [2020-10-26 04:27:48,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:27:48 WrapperNode [2020-10-26 04:27:48,529 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 04:27:48,530 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 04:27:48,530 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 04:27:48,531 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 04:27:48,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:27:48" (1/1) ... [2020-10-26 04:27:48,549 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:27:48" (1/1) ... [2020-10-26 04:27:48,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 04:27:48,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 04:27:48,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 04:27:48,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 04:27:48,604 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:27:48" (1/1) ... [2020-10-26 04:27:48,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:27:48" (1/1) ... [2020-10-26 04:27:48,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:27:48" (1/1) ... [2020-10-26 04:27:48,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:27:48" (1/1) ... [2020-10-26 04:27:48,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:27:48" (1/1) ... [2020-10-26 04:27:48,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:27:48" (1/1) ... [2020-10-26 04:27:48,628 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:27:48" (1/1) ... [2020-10-26 04:27:48,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 04:27:48,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 04:27:48,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 04:27:48,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 04:27:48,640 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:27:48" (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 04:27:48,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 04:27:48,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 04:27:48,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 04:27:48,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 04:27:49,379 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 04:27:49,379 INFO L298 CfgBuilder]: Removed 42 assume(true) statements. [2020-10-26 04:27:49,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:27:49 BoogieIcfgContainer [2020-10-26 04:27:49,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 04:27:49,383 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-26 04:27:49,383 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-26 04:27:49,387 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-26 04:27:49,388 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:27:49,388 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.10 04:27:48" (1/3) ... [2020-10-26 04:27:49,390 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1f73c3ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 04:27:49, skipping insertion in model container [2020-10-26 04:27:49,390 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:27:49,390 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:27:48" (2/3) ... [2020-10-26 04:27:49,390 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1f73c3ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 04:27:49, skipping insertion in model container [2020-10-26 04:27:49,391 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:27:49,391 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:27:49" (3/3) ... [2020-10-26 04:27:49,393 INFO L373 chiAutomizerObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2020-10-26 04:27:49,446 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-26 04:27:49,447 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-26 04:27:49,447 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-26 04:27:49,447 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 04:27:49,447 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 04:27:49,448 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-26 04:27:49,448 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 04:27:49,448 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-26 04:27:49,472 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 96 states. [2020-10-26 04:27:49,505 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2020-10-26 04:27:49,505 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:27:49,505 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:27:49,513 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-26 04:27:49,514 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:27:49,514 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-26 04:27:49,514 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 96 states. [2020-10-26 04:27:49,522 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2020-10-26 04:27:49,523 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:27:49,523 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:27:49,524 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-26 04:27:49,524 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:27:49,533 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); 11#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; 14#L21true assume !(0 == base2flt_~m % 4294967296); 59#L27true assume !(base2flt_~m % 4294967296 < 16777216); 52#L49-2true [2020-10-26 04:27:49,534 INFO L796 eck$LassoCheckResult]: Loop: 52#L49-2true assume !false; 85#L50true assume base2flt_~m % 4294967296 >= 33554432; 10#L51true assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 52#L49-2true [2020-10-26 04:27:49,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:49,542 INFO L82 PathProgramCache]: Analyzing trace with hash 925696, now seen corresponding path program 1 times [2020-10-26 04:27:49,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:27:49,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589002021] [2020-10-26 04:27:49,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:27:49,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:49,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:27:49,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589002021] [2020-10-26 04:27:49,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:27:49,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 04:27:49,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930903588] [2020-10-26 04:27:49,799 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-26 04:27:49,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:49,801 INFO L82 PathProgramCache]: Analyzing trace with hash 74612, now seen corresponding path program 1 times [2020-10-26 04:27:49,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:27:49,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111570451] [2020-10-26 04:27:49,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:27:49,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:49,818 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:49,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:49,829 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:49,858 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:27:49,931 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:27:49,936 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:27:49,936 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:27:49,936 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:27:49,937 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:27:49,938 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:49,938 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:27:49,938 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:27:49,938 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-3a.c.cil.c_Iteration1_Loop [2020-10-26 04:27:49,939 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:27:49,939 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:27:49,969 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 04:27:49,987 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 04:27:50,140 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:27:50,141 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:27:50,157 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:27:50,157 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:27:50,216 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:27:50,216 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 04:27:50,264 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:27:50,274 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:27:50,274 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:27:50,274 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:27:50,275 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:27:50,275 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:27:50,275 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:50,275 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:27:50,276 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:27:50,277 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-3a.c.cil.c_Iteration1_Loop [2020-10-26 04:27:50,277 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:27:50,277 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:27:50,279 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 04:27:50,295 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 04:27:50,418 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:27:50,429 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 04:27:50,436 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 04:27:50,439 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:27:50,439 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:27:50,440 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:27:50,440 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:27:50,440 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:27:50,445 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:27:50,446 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:27:50,450 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:27:50,460 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 04:27:50,460 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:27:50,468 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:27:50,469 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:27:50,470 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:27:50,471 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:50,509 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:27:50,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:50,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:27:50,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:27:50,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:50,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:27:50,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:27:50,586 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 04:27:50,607 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 04:27:50,609 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states. Second operand 3 states. [2020-10-26 04:27:50,715 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96 states.. Second operand 3 states. Result 277 states and 435 transitions. Complement of second has 6 states. [2020-10-26 04:27:50,716 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 04:27:50,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-26 04:27:50,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 284 transitions. [2020-10-26 04:27:50,725 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 284 transitions. Stem has 4 letters. Loop has 3 letters. [2020-10-26 04:27:50,727 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:50,727 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 284 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-26 04:27:50,729 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:50,729 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 284 transitions. Stem has 4 letters. Loop has 6 letters. [2020-10-26 04:27:50,729 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:50,731 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 277 states and 435 transitions. [2020-10-26 04:27:50,754 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2020-10-26 04:27:50,764 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 277 states to 57 states and 82 transitions. [2020-10-26 04:27:50,765 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 53 [2020-10-26 04:27:50,766 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54 [2020-10-26 04:27:50,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 82 transitions. [2020-10-26 04:27:50,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:27:50,773 INFO L691 BuchiCegarLoop]: Abstraction has 57 states and 82 transitions. [2020-10-26 04:27:50,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states and 82 transitions. [2020-10-26 04:27:50,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 46. [2020-10-26 04:27:50,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-26 04:27:50,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 70 transitions. [2020-10-26 04:27:50,806 INFO L714 BuchiCegarLoop]: Abstraction has 46 states and 70 transitions. [2020-10-26 04:27:50,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:27:50,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 04:27:50,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 04:27:50,812 INFO L87 Difference]: Start difference. First operand 46 states and 70 transitions. Second operand 3 states. [2020-10-26 04:27:50,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:27:50,908 INFO L93 Difference]: Finished difference Result 24 states and 31 transitions. [2020-10-26 04:27:50,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 04:27:50,910 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2020-10-26 04:27:50,911 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-10-26 04:27:50,913 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 24 states and 31 transitions. [2020-10-26 04:27:50,913 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2020-10-26 04:27:50,914 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2020-10-26 04:27:50,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 31 transitions. [2020-10-26 04:27:50,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 04:27:50,914 INFO L691 BuchiCegarLoop]: Abstraction has 24 states and 31 transitions. [2020-10-26 04:27:50,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 31 transitions. [2020-10-26 04:27:50,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-26 04:27:50,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-26 04:27:50,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2020-10-26 04:27:50,919 INFO L714 BuchiCegarLoop]: Abstraction has 24 states and 31 transitions. [2020-10-26 04:27:50,920 INFO L594 BuchiCegarLoop]: Abstraction has 24 states and 31 transitions. [2020-10-26 04:27:50,920 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-26 04:27:50,920 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 31 transitions. [2020-10-26 04:27:50,921 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-10-26 04:27:50,921 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:27:50,921 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:27:50,922 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-26 04:27:50,922 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:27:50,923 INFO L794 eck$LassoCheckResult]: Stem: 509#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); 507#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; 508#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 501#L71 base2flt_#res := base2flt_~__retres4~0; 502#L72 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; 505#L21-1 assume !(0 == base2flt_~m % 4294967296); 487#L27-1 assume !(base2flt_~m % 4294967296 < 16777216); 488#L49-5 [2020-10-26 04:27:50,923 INFO L796 eck$LassoCheckResult]: Loop: 488#L49-5 assume !false; 497#L50-1 assume base2flt_~m % 4294967296 >= 33554432; 498#L51-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 488#L49-5 [2020-10-26 04:27:50,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:50,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1806627809, now seen corresponding path program 1 times [2020-10-26 04:27:50,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:27:50,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543542054] [2020-10-26 04:27:50,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:27:50,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:50,946 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:50,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:50,966 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:50,973 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:27:50,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:50,974 INFO L82 PathProgramCache]: Analyzing trace with hash 137171, now seen corresponding path program 1 times [2020-10-26 04:27:50,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:27:50,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894897100] [2020-10-26 04:27:50,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:27:50,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:50,983 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:50,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:50,998 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:51,001 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:27:51,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:51,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1013979123, now seen corresponding path program 1 times [2020-10-26 04:27:51,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:27:51,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145809906] [2020-10-26 04:27:51,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:27:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:51,056 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:51,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:51,106 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:51,116 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:27:51,142 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:27:51,142 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:27:51,143 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:27:51,143 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:27:51,143 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:27:51,143 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:51,143 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:27:51,143 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:27:51,143 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-3a.c.cil.c_Iteration2_Loop [2020-10-26 04:27:51,144 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:27:51,144 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:27:51,146 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 04:27:51,156 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 04:27:51,279 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:27:51,280 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 04:27:51,288 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:27:51,289 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 04:27:51,330 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:27:51,331 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 04:27:51,346 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:27:51,346 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 04:27:51,398 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:27:51,398 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 04:27:51,446 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:27:51,449 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:27:51,449 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:27:51,449 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:27:51,449 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:27:51,449 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:27:51,450 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:51,450 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:27:51,450 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:27:51,450 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-3a.c.cil.c_Iteration2_Loop [2020-10-26 04:27:51,450 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:27:51,450 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:27:51,452 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 04:27:51,492 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 L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:27:51,631 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:51,642 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 04:27:51,643 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:27:51,644 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:27:51,644 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:27:51,644 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:27:51,645 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:27:51,649 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:27:51,649 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:27:51,653 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:51,683 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 04:27:51,685 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:27:51,685 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:27:51,685 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:27:51,686 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:27:51,686 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:27:51,688 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:27:51,688 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:27:51,695 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:27:51,702 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 04:27:51,703 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 04:27:51,707 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:27:51,707 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:27:51,707 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:27:51,707 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 04:27:51,743 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:27:51,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:51,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:27:51,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:27:51,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:51,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:27:51,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:27:51,816 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 04:27:51,818 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 04:27:51,818 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 31 transitions. cyclomatic complexity: 11 Second operand 3 states. [2020-10-26 04:27:51,855 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 04:27:51,856 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 04:27:51,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-26 04:27:51,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 33 transitions. [2020-10-26 04:27:51,857 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-26 04:27:51,858 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:51,858 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 10 letters. Loop has 3 letters. [2020-10-26 04:27:51,859 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:51,859 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 7 letters. Loop has 6 letters. [2020-10-26 04:27:51,859 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:51,859 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 51 transitions. [2020-10-26 04:27:51,860 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2020-10-26 04:27:51,862 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 38 states and 47 transitions. [2020-10-26 04:27:51,862 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2020-10-26 04:27:51,864 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2020-10-26 04:27:51,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 47 transitions. [2020-10-26 04:27:51,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:27:51,865 INFO L691 BuchiCegarLoop]: Abstraction has 38 states and 47 transitions. [2020-10-26 04:27:51,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 47 transitions. [2020-10-26 04:27:51,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2020-10-26 04:27:51,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-26 04:27:51,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-10-26 04:27:51,872 INFO L714 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-10-26 04:27:51,872 INFO L594 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-10-26 04:27:51,872 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-26 04:27:51,872 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 35 transitions. [2020-10-26 04:27:51,873 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-10-26 04:27:51,874 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:27:51,874 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:27:51,876 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-26 04:27:51,877 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:27:51,877 INFO L794 eck$LassoCheckResult]: Stem: 627#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); 625#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; 626#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 619#L71 base2flt_#res := base2flt_~__retres4~0; 620#L72 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; 623#L21-1 assume !(0 == base2flt_~m % 4294967296); 602#L27-1 assume base2flt_~m % 4294967296 < 16777216; 604#L39-3 [2020-10-26 04:27:51,877 INFO L796 eck$LassoCheckResult]: Loop: 604#L39-3 assume !false; 622#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 605#L39-2 assume base2flt_~m % 4294967296 < 16777216; 604#L39-3 [2020-10-26 04:27:51,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:51,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1806627783, now seen corresponding path program 1 times [2020-10-26 04:27:51,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:27:51,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346729879] [2020-10-26 04:27:51,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:27:51,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:51,927 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:51,959 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:51,970 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:27:51,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:51,973 INFO L82 PathProgramCache]: Analyzing trace with hash 111412, now seen corresponding path program 1 times [2020-10-26 04:27:51,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:27:51,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656912807] [2020-10-26 04:27:51,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:27:51,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:51,987 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:51,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:51,994 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:51,999 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:27:52,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:52,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1013178798, now seen corresponding path program 1 times [2020-10-26 04:27:52,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:27:52,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243917949] [2020-10-26 04:27:52,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:27:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:52,036 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:52,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:52,075 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:52,089 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:27:52,169 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:27:52,169 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:27:52,169 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:27:52,169 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:27:52,169 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:27:52,170 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:52,170 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:27:52,170 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:27:52,170 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-3a.c.cil.c_Iteration3_Loop [2020-10-26 04:27:52,172 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:27:52,172 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:27:52,175 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 04:27:52,188 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:52,263 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:27:52,263 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) [2020-10-26 04:27:52,269 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:27:52,270 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:52,312 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:27:52,313 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=0} Honda state: {ULTIMATE.start_base2flt_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:52,322 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:27:52,323 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:52,358 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:27:52,358 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:27:52,388 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:27:52,393 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:27:52,393 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:27:52,393 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:27:52,393 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:27:52,394 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:27:52,394 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:52,394 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:27:52,394 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:27:52,394 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-3a.c.cil.c_Iteration3_Loop [2020-10-26 04:27:52,394 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:27:52,394 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:27:52,395 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 04:27:52,407 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 04:27:52,506 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:27:52,509 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 04:27:52,515 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 04:27:52,518 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:27:52,519 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:27:52,519 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:27:52,519 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:27:52,519 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:27:52,522 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:27:52,522 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:27:52,526 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) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:52,554 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 04:27:52,555 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:27:52,556 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:27:52,556 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:27:52,556 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:27:52,556 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:27:52,558 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:27:52,558 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:27:52,561 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:27:52,571 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 04:27:52,571 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 04:27:52,578 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:27:52,579 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:27:52,579 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:27:52,579 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 04:27:52,617 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:27:52,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:52,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:52,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:27:52,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:27:52,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:52,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:27:52,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:27:52,763 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 04:27:52,764 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 04:27:52,764 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 35 transitions. cyclomatic complexity: 12 Second operand 4 states. [2020-10-26 04:27:52,788 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 04:27:52,791 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 04:27:52,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-26 04:27:52,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 34 transitions. [2020-10-26 04:27:52,792 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 34 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-26 04:27:52,792 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:52,792 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 34 transitions. Stem has 10 letters. Loop has 3 letters. [2020-10-26 04:27:52,793 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:52,793 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 34 transitions. Stem has 7 letters. Loop has 6 letters. [2020-10-26 04:27:52,793 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:52,793 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 56 transitions. [2020-10-26 04:27:52,795 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-10-26 04:27:52,796 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 42 states and 52 transitions. [2020-10-26 04:27:52,799 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2020-10-26 04:27:52,799 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2020-10-26 04:27:52,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 52 transitions. [2020-10-26 04:27:52,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:27:52,799 INFO L691 BuchiCegarLoop]: Abstraction has 42 states and 52 transitions. [2020-10-26 04:27:52,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 52 transitions. [2020-10-26 04:27:52,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2020-10-26 04:27:52,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-26 04:27:52,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2020-10-26 04:27:52,803 INFO L714 BuchiCegarLoop]: Abstraction has 30 states and 39 transitions. [2020-10-26 04:27:52,804 INFO L594 BuchiCegarLoop]: Abstraction has 30 states and 39 transitions. [2020-10-26 04:27:52,804 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-26 04:27:52,804 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 39 transitions. [2020-10-26 04:27:52,805 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-10-26 04:27:52,806 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:27:52,806 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:27:52,806 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 04:27:52,806 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:27:52,807 INFO L794 eck$LassoCheckResult]: Stem: 753#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); 751#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; 752#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 744#L71 base2flt_#res := base2flt_~__retres4~0; 745#L72 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; 749#L21-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 734#L71-1 base2flt_#res := base2flt_~__retres4~0; 735#L72-1 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; 743#L21-2 assume !(0 == base2flt_~m % 4294967296); 750#L27-2 assume !(base2flt_~m % 4294967296 < 16777216); 736#L49-8 [2020-10-26 04:27:52,807 INFO L796 eck$LassoCheckResult]: Loop: 736#L49-8 assume !false; 732#L50-2 assume base2flt_~m % 4294967296 >= 33554432; 733#L51-2 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 736#L49-8 [2020-10-26 04:27:52,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:52,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1012956351, now seen corresponding path program 1 times [2020-10-26 04:27:52,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:27:52,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086279483] [2020-10-26 04:27:52,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:27:52,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:52,823 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:52,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:52,835 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:52,840 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:27:52,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:52,842 INFO L82 PathProgramCache]: Analyzing trace with hash 199730, now seen corresponding path program 1 times [2020-10-26 04:27:52,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:27:52,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714216556] [2020-10-26 04:27:52,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:27:52,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:52,848 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:52,853 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:52,855 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:27:52,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:52,857 INFO L82 PathProgramCache]: Analyzing trace with hash 542600884, now seen corresponding path program 1 times [2020-10-26 04:27:52,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:27:52,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329679429] [2020-10-26 04:27:52,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:27:52,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:52,873 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:52,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:52,900 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:52,911 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:27:52,997 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:27:52,997 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:27:52,997 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:27:52,998 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:27:52,998 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:27:52,998 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:52,998 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:27:52,998 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:27:52,998 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-3a.c.cil.c_Iteration4_Loop [2020-10-26 04:27:52,999 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:27:52,999 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:27:53,000 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 04:27:53,008 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 04:27:53,100 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:27:53,100 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) [2020-10-26 04:27:53,105 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:27:53,105 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:27:53,153 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:27:53,153 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:53,198 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:27:53,201 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:27:53,201 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:27:53,201 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:27:53,202 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:27:53,202 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:27:53,202 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:53,202 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:27:53,202 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:27:53,202 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-3a.c.cil.c_Iteration4_Loop [2020-10-26 04:27:53,202 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:27:53,202 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:27:53,204 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 04:27:53,212 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 04:27:53,307 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:27:53,308 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 04:27:53,321 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:53,324 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:27:53,324 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:27:53,325 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:27:53,325 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:27:53,325 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:27:53,326 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:27:53,326 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:27:53,329 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:27:53,335 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 04:27:53,336 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 04:27:53,342 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:27:53,342 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:27:53,343 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:27:53,343 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 04:27:53,378 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:27:53,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:53,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:53,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:27:53,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:27:53,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:53,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:27:53,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:27:53,431 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 04:27:53,433 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 04:27:53,433 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 30 states and 39 transitions. cyclomatic complexity: 13 Second operand 3 states. [2020-10-26 04:27:53,457 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 04:27:53,459 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 04:27:53,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-26 04:27:53,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 31 transitions. [2020-10-26 04:27:53,460 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 10 letters. Loop has 3 letters. [2020-10-26 04:27:53,460 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:53,460 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 13 letters. Loop has 3 letters. [2020-10-26 04:27:53,460 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:53,460 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 10 letters. Loop has 6 letters. [2020-10-26 04:27:53,460 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:53,461 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 43 transitions. [2020-10-26 04:27:53,461 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-26 04:27:53,462 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 27 states and 35 transitions. [2020-10-26 04:27:53,465 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2020-10-26 04:27:53,465 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2020-10-26 04:27:53,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 35 transitions. [2020-10-26 04:27:53,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:27:53,466 INFO L691 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-10-26 04:27:53,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 35 transitions. [2020-10-26 04:27:53,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-26 04:27:53,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-26 04:27:53,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-10-26 04:27:53,473 INFO L714 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-10-26 04:27:53,473 INFO L594 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-10-26 04:27:53,473 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-26 04:27:53,474 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 35 transitions. [2020-10-26 04:27:53,474 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-26 04:27:53,474 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:27:53,474 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:27:53,475 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 04:27:53,476 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:27:53,477 INFO L794 eck$LassoCheckResult]: Stem: 871#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); 869#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; 870#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 861#L71 base2flt_#res := base2flt_~__retres4~0; 862#L72 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; 867#L21-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 853#L71-1 base2flt_#res := base2flt_~__retres4~0; 854#L72-1 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; 863#L21-2 assume !(0 == base2flt_~m % 4294967296); 868#L27-2 assume base2flt_~m % 4294967296 < 16777216; 872#L39-5 [2020-10-26 04:27:53,477 INFO L796 eck$LassoCheckResult]: Loop: 872#L39-5 assume !false; 859#L30-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 860#L39-4 assume base2flt_~m % 4294967296 < 16777216; 872#L39-5 [2020-10-26 04:27:53,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:53,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1012956325, now seen corresponding path program 1 times [2020-10-26 04:27:53,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:27:53,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705425795] [2020-10-26 04:27:53,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:27:53,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:53,510 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:53,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:53,532 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:53,543 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:27:53,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:53,545 INFO L82 PathProgramCache]: Analyzing trace with hash 173971, now seen corresponding path program 1 times [2020-10-26 04:27:53,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:27:53,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455116333] [2020-10-26 04:27:53,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:27:53,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:53,554 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:53,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:53,563 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:53,567 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:27:53,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:53,569 INFO L82 PathProgramCache]: Analyzing trace with hash 541800559, now seen corresponding path program 1 times [2020-10-26 04:27:53,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:27:53,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894463352] [2020-10-26 04:27:53,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:27:53,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:53,599 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:53,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:53,613 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:53,619 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:27:53,641 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:27:53,641 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:27:53,641 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:27:53,641 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:27:53,641 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:27:53,641 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:53,642 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:27:53,642 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:27:53,642 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-3a.c.cil.c_Iteration5_Loop [2020-10-26 04:27:53,642 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:27:53,642 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:27:53,643 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 04:27:53,651 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 04:27:53,764 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:27:53,765 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 04:27:53,769 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:27:53,769 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 04:27:53,816 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:27:53,816 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 04:27:53,859 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:27:53,862 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:27:53,862 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:27:53,862 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:27:53,862 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:27:53,862 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:27:53,862 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:53,862 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:27:53,862 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:27:53,862 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-3a.c.cil.c_Iteration5_Loop [2020-10-26 04:27:53,862 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:27:53,863 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:27:53,863 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 04:27:53,869 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 04:27:53,931 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:27:53,932 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 04:27:53,939 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 04:27:53,940 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:27:53,941 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:27:53,941 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:27:53,941 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:27:53,941 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:27:53,942 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:27:53,942 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 04:27:53,945 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:27:53,948 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 04:27:53,949 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 04:27:53,952 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:27:53,952 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:27:53,952 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:27:53,952 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 04:27:53,988 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:27:54,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:54,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:54,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:27:54,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:27:54,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:54,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:27:54,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:27:54,093 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 04:27:54,094 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 04:27:54,095 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 35 transitions. cyclomatic complexity: 11 Second operand 4 states. [2020-10-26 04:27:54,111 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 04:27:54,112 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 04:27:54,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-26 04:27:54,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 28 transitions. [2020-10-26 04:27:54,112 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 28 transitions. Stem has 10 letters. Loop has 3 letters. [2020-10-26 04:27:54,114 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:54,114 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 28 transitions. Stem has 13 letters. Loop has 3 letters. [2020-10-26 04:27:54,114 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:54,114 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 28 transitions. Stem has 10 letters. Loop has 6 letters. [2020-10-26 04:27:54,115 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:54,115 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 39 transitions. [2020-10-26 04:27:54,116 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 04:27:54,117 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 0 states and 0 transitions. [2020-10-26 04:27:54,117 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-26 04:27:54,117 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-26 04:27:54,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-26 04:27:54,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 04:27:54,117 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:27:54,117 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:27:54,118 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:27:54,118 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-10-26 04:27:54,118 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-26 04:27:54,119 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 04:27:54,119 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-26 04:27:54,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.10 04:27:54 BoogieIcfgContainer [2020-10-26 04:27:54,128 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-26 04:27:54,132 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 04:27:54,132 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 04:27:54,133 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 04:27:54,133 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:27:49" (3/4) ... [2020-10-26 04:27:54,138 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-26 04:27:54,139 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 04:27:54,143 INFO L168 Benchmark]: Toolchain (without parser) took 6116.36 ms. Allocated memory was 41.9 MB in the beginning and 92.3 MB in the end (delta: 50.3 MB). Free memory was 17.6 MB in the beginning and 63.9 MB in the end (delta: -46.2 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2020-10-26 04:27:54,144 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 41.9 MB. Free memory is still 19.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:27:54,146 INFO L168 Benchmark]: CACSL2BoogieTranslator took 476.06 ms. Allocated memory is still 52.4 MB. Free memory was 36.2 MB in the beginning and 23.4 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-10-26 04:27:54,148 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.08 ms. Allocated memory is still 52.4 MB. Free memory was 23.4 MB in the beginning and 35.2 MB in the end (delta: -11.8 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. [2020-10-26 04:27:54,155 INFO L168 Benchmark]: Boogie Preprocessor took 40.63 ms. Allocated memory is still 52.4 MB. Free memory was 35.2 MB in the beginning and 33.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 04:27:54,159 INFO L168 Benchmark]: RCFGBuilder took 746.34 ms. Allocated memory is still 52.4 MB. Free memory was 33.4 MB in the beginning and 29.6 MB in the end (delta: 3.8 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. [2020-10-26 04:27:54,165 INFO L168 Benchmark]: BuchiAutomizer took 4745.53 ms. Allocated memory was 52.4 MB in the beginning and 92.3 MB in the end (delta: 39.8 MB). Free memory was 29.4 MB in the beginning and 64.5 MB in the end (delta: -35.1 MB). Peak memory consumption was 3.8 MB. Max. memory is 16.1 GB. [2020-10-26 04:27:54,166 INFO L168 Benchmark]: Witness Printer took 6.68 ms. Allocated memory is still 92.3 MB. Free memory was 64.5 MB in the beginning and 63.9 MB in the end (delta: 673.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:27:54,175 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 41.9 MB. Free memory is still 19.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 476.06 ms. Allocated memory is still 52.4 MB. Free memory was 36.2 MB in the beginning and 23.4 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 62.08 ms. Allocated memory is still 52.4 MB. Free memory was 23.4 MB in the beginning and 35.2 MB in the end (delta: -11.8 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.63 ms. Allocated memory is still 52.4 MB. Free memory was 35.2 MB in the beginning and 33.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 746.34 ms. Allocated memory is still 52.4 MB. Free memory was 33.4 MB in the beginning and 29.6 MB in the end (delta: 3.8 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 4745.53 ms. Allocated memory was 52.4 MB in the beginning and 92.3 MB in the end (delta: 39.8 MB). Free memory was 29.4 MB in the beginning and 64.5 MB in the end (delta: -35.1 MB). Peak memory consumption was 3.8 MB. Max. memory is 16.1 GB. * Witness Printer took 6.68 ms. Allocated memory is still 92.3 MB. Free memory was 64.5 MB in the beginning and 63.9 MB in the end (delta: 673.1 kB). There was no memory consumed. 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 4.6s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 3.6s. Construction of modules took 0.1s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 34 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 30 states and ocurred in iteration 3. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 281 SDtfs, 248 SDslu, 27 SDs, 0 SdLazy, 38 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf95 lsp57 ukn100 mio100 lsp100 div583 bol100 ite100 ukn100 eq132 hnf44 smp92 dnf100 smp100 tf105 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 39ms 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...