./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/bitvector/soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_eb266011-392d-4dbf-8e40-72a7a4b7538e/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_eb266011-392d-4dbf-8e40-72a7a4b7538e/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_eb266011-392d-4dbf-8e40-72a7a4b7538e/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_eb266011-392d-4dbf-8e40-72a7a4b7538e/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/bitvector/soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_eb266011-392d-4dbf-8e40-72a7a4b7538e/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_eb266011-392d-4dbf-8e40-72a7a4b7538e/bin-2019/uautomizer --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 12b1dd0058eac32d4e9fcabcf1e935c527e522e6 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 15:51:20,354 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 15:51:20,355 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 15:51:20,362 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 15:51:20,362 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 15:51:20,363 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 15:51:20,364 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 15:51:20,365 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 15:51:20,366 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 15:51:20,366 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 15:51:20,367 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 15:51:20,367 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 15:51:20,368 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 15:51:20,368 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 15:51:20,369 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 15:51:20,370 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 15:51:20,370 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 15:51:20,371 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 15:51:20,372 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 15:51:20,373 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 15:51:20,374 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 15:51:20,374 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 15:51:20,376 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 15:51:20,376 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 15:51:20,376 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 15:51:20,377 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 15:51:20,378 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 15:51:20,378 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 15:51:20,379 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 15:51:20,379 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 15:51:20,379 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 15:51:20,380 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 15:51:20,380 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 15:51:20,380 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 15:51:20,381 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 15:51:20,381 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 15:51:20,382 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_eb266011-392d-4dbf-8e40-72a7a4b7538e/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-11-18 15:51:20,391 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 15:51:20,391 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 15:51:20,392 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 15:51:20,392 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 15:51:20,392 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 15:51:20,392 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-18 15:51:20,392 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-18 15:51:20,393 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-18 15:51:20,393 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-18 15:51:20,393 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-18 15:51:20,393 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-18 15:51:20,393 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 15:51:20,393 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 15:51:20,393 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 15:51:20,393 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 15:51:20,394 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 15:51:20,394 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 15:51:20,394 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-18 15:51:20,394 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-18 15:51:20,394 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-18 15:51:20,394 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 15:51:20,394 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 15:51:20,395 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-18 15:51:20,395 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 15:51:20,395 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-18 15:51:20,395 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 15:51:20,395 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 15:51:20,395 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-18 15:51:20,395 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 15:51:20,395 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 15:51:20,396 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-18 15:51:20,396 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-18 15:51:20,396 INFO L133 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_eb266011-392d-4dbf-8e40-72a7a4b7538e/bin-2019/uautomizer 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 -> 12b1dd0058eac32d4e9fcabcf1e935c527e522e6 [2018-11-18 15:51:20,419 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 15:51:20,428 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 15:51:20,431 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 15:51:20,432 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 15:51:20,432 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 15:51:20,433 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_eb266011-392d-4dbf-8e40-72a7a4b7538e/bin-2019/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-11-18 15:51:20,475 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_eb266011-392d-4dbf-8e40-72a7a4b7538e/bin-2019/uautomizer/data/b5eb03ccf/188c9c36782d40d094ea645f7ccaaf0f/FLAG4d2ecaa5a [2018-11-18 15:51:20,908 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 15:51:20,908 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_eb266011-392d-4dbf-8e40-72a7a4b7538e/sv-benchmarks/c/bitvector/soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-11-18 15:51:20,914 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_eb266011-392d-4dbf-8e40-72a7a4b7538e/bin-2019/uautomizer/data/b5eb03ccf/188c9c36782d40d094ea645f7ccaaf0f/FLAG4d2ecaa5a [2018-11-18 15:51:20,929 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_eb266011-392d-4dbf-8e40-72a7a4b7538e/bin-2019/uautomizer/data/b5eb03ccf/188c9c36782d40d094ea645f7ccaaf0f [2018-11-18 15:51:20,932 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 15:51:20,934 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 15:51:20,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 15:51:20,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 15:51:20,938 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 15:51:20,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:51:20" (1/1) ... [2018-11-18 15:51:20,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25c31600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:51:20, skipping insertion in model container [2018-11-18 15:51:20,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:51:20" (1/1) ... [2018-11-18 15:51:20,952 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 15:51:20,980 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 15:51:21,117 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 15:51:21,120 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 15:51:21,142 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 15:51:21,152 INFO L195 MainTranslator]: Completed translation [2018-11-18 15:51:21,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:51:21 WrapperNode [2018-11-18 15:51:21,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 15:51:21,153 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 15:51:21,153 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 15:51:21,153 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 15:51:21,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:51:21" (1/1) ... [2018-11-18 15:51:21,162 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:51:21" (1/1) ... [2018-11-18 15:51:21,216 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 15:51:21,217 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 15:51:21,217 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 15:51:21,217 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 15:51:21,222 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:51:21" (1/1) ... [2018-11-18 15:51:21,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:51:21" (1/1) ... [2018-11-18 15:51:21,224 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:51:21" (1/1) ... [2018-11-18 15:51:21,224 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:51:21" (1/1) ... [2018-11-18 15:51:21,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:51:21" (1/1) ... [2018-11-18 15:51:21,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:51:21" (1/1) ... [2018-11-18 15:51:21,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:51:21" (1/1) ... [2018-11-18 15:51:21,234 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 15:51:21,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 15:51:21,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 15:51:21,235 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 15:51:21,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:51:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eb266011-392d-4dbf-8e40-72a7a4b7538e/bin-2019/uautomizer/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 [2018-11-18 15:51:21,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 15:51:21,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 15:51:21,574 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 15:51:21,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:51:21 BoogieIcfgContainer [2018-11-18 15:51:21,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 15:51:21,575 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-18 15:51:21,575 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-18 15:51:21,577 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-18 15:51:21,578 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 15:51:21,578 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.11 03:51:20" (1/3) ... [2018-11-18 15:51:21,578 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3a294c30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 03:51:21, skipping insertion in model container [2018-11-18 15:51:21,579 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 15:51:21,579 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:51:21" (2/3) ... [2018-11-18 15:51:21,579 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3a294c30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 03:51:21, skipping insertion in model container [2018-11-18 15:51:21,579 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 15:51:21,579 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:51:21" (3/3) ... [2018-11-18 15:51:21,580 INFO L375 chiAutomizerObserver]: Analyzing ICFG soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-11-18 15:51:21,618 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 15:51:21,619 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-18 15:51:21,619 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-18 15:51:21,619 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-18 15:51:21,619 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 15:51:21,619 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 15:51:21,620 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-18 15:51:21,620 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 15:51:21,620 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-18 15:51:21,630 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 80 states. [2018-11-18 15:51:21,645 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 32 [2018-11-18 15:51:21,645 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 15:51:21,645 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 15:51:21,649 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-18 15:51:21,649 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 15:51:21,649 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-18 15:51:21,649 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 80 states. [2018-11-18 15:51:21,653 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 32 [2018-11-18 15:51:21,654 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 15:51:21,654 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 15:51:21,654 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-18 15:51:21,654 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 15:51:21,659 INFO L794 eck$LassoCheckResult]: Stem: 39#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 33#L19true assume !(0 == base2flt_~m % 4294967296); 19#L25true assume !(base2flt_~m % 4294967296 < 16777216); 11#L47-3true [2018-11-18 15:51:21,659 INFO L796 eck$LassoCheckResult]: Loop: 11#L47-3true assume true; 18#L47-1true assume !false; 24#L48true assume base2flt_~m % 4294967296 >= 33554432; 53#L49true assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 11#L47-3true [2018-11-18 15:51:21,664 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:51:21,664 INFO L82 PathProgramCache]: Analyzing trace with hash 925697, now seen corresponding path program 1 times [2018-11-18 15:51:21,666 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:51:21,666 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:51:21,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:51:21,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:51:21,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:51:21,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:51:21,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:51:21,772 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 15:51:21,772 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 15:51:21,775 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-18 15:51:21,775 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:51:21,775 INFO L82 PathProgramCache]: Analyzing trace with hash 2191759, now seen corresponding path program 1 times [2018-11-18 15:51:21,775 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:51:21,775 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:51:21,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:51:21,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:51:21,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:51:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:51:21,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:51:21,829 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 15:51:21,830 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 15:51:21,830 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 15:51:21,830 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 15:51:21,830 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 15:51:21,830 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:51:21,830 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 15:51:21,830 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 15:51:21,830 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration1_Loop [2018-11-18 15:51:21,831 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 15:51:21,831 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 15:51:21,848 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:51:21,864 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:51:21,942 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 15:51:21,943 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eb266011-392d-4dbf-8e40-72a7a4b7538e/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:51:21,952 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 15:51:21,952 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 15:51:21,976 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 15:51:21,977 INFO L448 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 /tmp/vcloud-vcloud-master/worker/working_dir_eb266011-392d-4dbf-8e40-72a7a4b7538e/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:51:21,992 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 15:51:21,992 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eb266011-392d-4dbf-8e40-72a7a4b7538e/bin-2019/uautomizer/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 [2018-11-18 15:51:22,008 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 15:51:22,009 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 15:51:22,027 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 15:51:22,028 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 15:51:22,028 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 15:51:22,028 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 15:51:22,028 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 15:51:22,028 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 15:51:22,029 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:51:22,029 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 15:51:22,029 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 15:51:22,029 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration1_Loop [2018-11-18 15:51:22,029 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 15:51:22,029 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 15:51:22,030 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:51:22,034 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:51:22,102 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 15:51:22,105 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 15:51:22,106 INFO L122 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 [2018-11-18 15:51:22,107 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 15:51:22,107 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 15:51:22,108 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 15:51:22,108 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 15:51:22,108 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 15:51:22,110 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 15:51:22,110 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 15:51:22,118 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 15:51:22,118 INFO L122 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 [2018-11-18 15:51:22,118 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 15:51:22,118 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 15:51:22,119 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 15:51:22,119 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 15:51:22,119 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 15:51:22,119 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 15:51:22,119 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 15:51:22,123 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 15:51:22,126 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 15:51:22,127 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 15:51:22,128 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 15:51:22,128 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 15:51:22,128 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 15:51:22,129 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-11-18 15:51:22,130 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 15:51:22,164 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:51:22,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:51:22,174 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:51:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:51:22,180 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:51:22,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:51:22,190 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 [2018-11-18 15:51:22,191 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 80 states. Second operand 3 states. [2018-11-18 15:51:22,247 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 80 states.. Second operand 3 states. Result 228 states and 367 transitions. Complement of second has 6 states. [2018-11-18 15:51:22,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-18 15:51:22,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 15:51:22,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 244 transitions. [2018-11-18 15:51:22,251 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 244 transitions. Stem has 4 letters. Loop has 4 letters. [2018-11-18 15:51:22,252 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:51:22,252 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 244 transitions. Stem has 8 letters. Loop has 4 letters. [2018-11-18 15:51:22,253 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:51:22,253 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 244 transitions. Stem has 4 letters. Loop has 8 letters. [2018-11-18 15:51:22,253 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:51:22,254 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 228 states and 367 transitions. [2018-11-18 15:51:22,259 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 52 [2018-11-18 15:51:22,264 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 228 states to 94 states and 135 transitions. [2018-11-18 15:51:22,265 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 89 [2018-11-18 15:51:22,266 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 90 [2018-11-18 15:51:22,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 94 states and 135 transitions. [2018-11-18 15:51:22,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 15:51:22,267 INFO L705 BuchiCegarLoop]: Abstraction has 94 states and 135 transitions. [2018-11-18 15:51:22,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states and 135 transitions. [2018-11-18 15:51:22,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 81. [2018-11-18 15:51:22,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-11-18 15:51:22,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 121 transitions. [2018-11-18 15:51:22,293 INFO L728 BuchiCegarLoop]: Abstraction has 81 states and 121 transitions. [2018-11-18 15:51:22,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 15:51:22,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 15:51:22,296 INFO L87 Difference]: Start difference. First operand 81 states and 121 transitions. Second operand 3 states. [2018-11-18 15:51:22,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:51:22,345 INFO L93 Difference]: Finished difference Result 41 states and 54 transitions. [2018-11-18 15:51:22,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 15:51:22,345 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 54 transitions. [2018-11-18 15:51:22,346 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 24 [2018-11-18 15:51:22,347 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 41 states and 54 transitions. [2018-11-18 15:51:22,347 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2018-11-18 15:51:22,347 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2018-11-18 15:51:22,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 54 transitions. [2018-11-18 15:51:22,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 15:51:22,348 INFO L705 BuchiCegarLoop]: Abstraction has 41 states and 54 transitions. [2018-11-18 15:51:22,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 54 transitions. [2018-11-18 15:51:22,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-18 15:51:22,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-18 15:51:22,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 54 transitions. [2018-11-18 15:51:22,349 INFO L728 BuchiCegarLoop]: Abstraction has 41 states and 54 transitions. [2018-11-18 15:51:22,350 INFO L608 BuchiCegarLoop]: Abstraction has 41 states and 54 transitions. [2018-11-18 15:51:22,350 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-18 15:51:22,350 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 54 transitions. [2018-11-18 15:51:22,350 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 24 [2018-11-18 15:51:22,350 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 15:51:22,350 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 15:51:22,351 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:51:22,351 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 15:51:22,351 INFO L794 eck$LassoCheckResult]: Stem: 516#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 487#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;assume { :begin_inline_base2flt } true;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; 488#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 480#L69 base2flt_#res := base2flt_~__retres4~0; 481#L70 main_#t~ret4 := base2flt_#res;assume { :end_inline_base2flt } true;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 510#L19-1 assume !(0 == base2flt_~m % 4294967296); 497#L25-1 assume !(base2flt_~m % 4294967296 < 16777216); 484#L47-7 [2018-11-18 15:51:22,351 INFO L796 eck$LassoCheckResult]: Loop: 484#L47-7 assume true; 489#L47-5 assume !false; 490#L48-1 assume base2flt_~m % 4294967296 >= 33554432; 482#L49-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 484#L47-7 [2018-11-18 15:51:22,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:51:22,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1806689378, now seen corresponding path program 1 times [2018-11-18 15:51:22,351 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:51:22,351 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:51:22,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:51:22,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:51:22,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:51:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:51:22,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:51:22,380 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 15:51:22,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 15:51:22,380 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-18 15:51:22,380 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:51:22,380 INFO L82 PathProgramCache]: Analyzing trace with hash 4192719, now seen corresponding path program 1 times [2018-11-18 15:51:22,381 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:51:22,381 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:51:22,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:51:22,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:51:22,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:51:22,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:51:22,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:51:22,406 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 15:51:22,406 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 15:51:22,406 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 15:51:22,406 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 15:51:22,406 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 15:51:22,406 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:51:22,406 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 15:51:22,406 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 15:51:22,406 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration2_Loop [2018-11-18 15:51:22,407 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 15:51:22,407 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 15:51:22,407 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:51:22,412 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:51:22,495 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 15:51:22,495 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eb266011-392d-4dbf-8e40-72a7a4b7538e/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:51:22,497 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 15:51:22,497 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 15:51:22,518 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 15:51:22,518 INFO L448 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 /tmp/vcloud-vcloud-master/worker/working_dir_eb266011-392d-4dbf-8e40-72a7a4b7538e/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:51:22,534 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 15:51:22,534 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eb266011-392d-4dbf-8e40-72a7a4b7538e/bin-2019/uautomizer/z3 Starting monitored process 7 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:51:22,550 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 15:51:22,550 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 15:51:22,567 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 15:51:22,567 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 15:51:22,568 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 15:51:22,568 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 15:51:22,568 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 15:51:22,568 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 15:51:22,568 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:51:22,568 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 15:51:22,568 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 15:51:22,568 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration2_Loop [2018-11-18 15:51:22,568 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 15:51:22,568 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 15:51:22,569 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:51:22,574 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:51:22,626 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 15:51:22,627 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 15:51:22,627 INFO L122 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 [2018-11-18 15:51:22,628 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 15:51:22,628 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 15:51:22,628 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 15:51:22,628 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 15:51:22,628 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 15:51:22,629 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 15:51:22,629 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 15:51:22,635 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 15:51:22,635 INFO L122 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 [2018-11-18 15:51:22,636 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 15:51:22,636 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 15:51:22,636 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 15:51:22,636 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 15:51:22,636 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 15:51:22,637 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 15:51:22,637 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 15:51:22,640 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 15:51:22,642 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 15:51:22,642 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 15:51:22,643 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 15:51:22,643 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 15:51:22,643 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 15:51:22,643 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-11-18 15:51:22,644 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 15:51:22,654 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:51:22,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:51:22,659 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:51:22,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:51:22,662 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:51:22,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:51:22,662 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 [2018-11-18 15:51:22,663 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 41 states and 54 transitions. cyclomatic complexity: 19 Second operand 3 states. [2018-11-18 15:51:22,672 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 41 states and 54 transitions. cyclomatic complexity: 19. Second operand 3 states. Result 74 states and 96 transitions. Complement of second has 5 states. [2018-11-18 15:51:22,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-18 15:51:22,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 15:51:22,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2018-11-18 15:51:22,673 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 56 transitions. Stem has 7 letters. Loop has 4 letters. [2018-11-18 15:51:22,674 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:51:22,674 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 56 transitions. Stem has 11 letters. Loop has 4 letters. [2018-11-18 15:51:22,674 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:51:22,674 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 56 transitions. Stem has 7 letters. Loop has 8 letters. [2018-11-18 15:51:22,674 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:51:22,674 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 74 states and 96 transitions. [2018-11-18 15:51:22,676 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 36 [2018-11-18 15:51:22,676 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 74 states to 71 states and 92 transitions. [2018-11-18 15:51:22,677 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 66 [2018-11-18 15:51:22,677 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 67 [2018-11-18 15:51:22,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 71 states and 92 transitions. [2018-11-18 15:51:22,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 15:51:22,677 INFO L705 BuchiCegarLoop]: Abstraction has 71 states and 92 transitions. [2018-11-18 15:51:22,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states and 92 transitions. [2018-11-18 15:51:22,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 45. [2018-11-18 15:51:22,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-18 15:51:22,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 59 transitions. [2018-11-18 15:51:22,680 INFO L728 BuchiCegarLoop]: Abstraction has 45 states and 59 transitions. [2018-11-18 15:51:22,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 15:51:22,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 15:51:22,680 INFO L87 Difference]: Start difference. First operand 45 states and 59 transitions. Second operand 3 states. [2018-11-18 15:51:22,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:51:22,713 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2018-11-18 15:51:22,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 15:51:22,713 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 52 transitions. [2018-11-18 15:51:22,714 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 20 [2018-11-18 15:51:22,714 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 42 states and 52 transitions. [2018-11-18 15:51:22,714 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2018-11-18 15:51:22,715 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2018-11-18 15:51:22,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 52 transitions. [2018-11-18 15:51:22,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 15:51:22,715 INFO L705 BuchiCegarLoop]: Abstraction has 42 states and 52 transitions. [2018-11-18 15:51:22,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 52 transitions. [2018-11-18 15:51:22,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2018-11-18 15:51:22,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-18 15:51:22,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2018-11-18 15:51:22,716 INFO L728 BuchiCegarLoop]: Abstraction has 37 states and 46 transitions. [2018-11-18 15:51:22,716 INFO L608 BuchiCegarLoop]: Abstraction has 37 states and 46 transitions. [2018-11-18 15:51:22,716 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-18 15:51:22,716 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 37 states and 46 transitions. [2018-11-18 15:51:22,717 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 20 [2018-11-18 15:51:22,717 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 15:51:22,717 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 15:51:22,717 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:51:22,717 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 15:51:22,717 INFO L794 eck$LassoCheckResult]: Stem: 766#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 738#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 739#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 734#L69 base2flt_#res := base2flt_~__retres4~0; 735#L70 main_#t~ret4 := base2flt_#res;assume { :end_inline_base2flt } true;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 759#L19-1 assume !(0 == base2flt_~m % 4294967296); 746#L25-1 assume base2flt_~m % 4294967296 < 16777216; 747#L37-3 [2018-11-18 15:51:22,717 INFO L796 eck$LassoCheckResult]: Loop: 747#L37-3 assume true; 742#L27-4 assume !false; 743#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 756#L37-2 assume base2flt_~m % 4294967296 < 16777216; 747#L37-3 [2018-11-18 15:51:22,718 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:51:22,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1806689351, now seen corresponding path program 1 times [2018-11-18 15:51:22,718 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:51:22,718 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:51:22,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:51:22,718 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:51:22,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:51:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:51:22,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:51:22,729 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:51:22,729 INFO L82 PathProgramCache]: Analyzing trace with hash 3361610, now seen corresponding path program 1 times [2018-11-18 15:51:22,729 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:51:22,729 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:51:22,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:51:22,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:51:22,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:51:22,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:51:22,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:51:22,734 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:51:22,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1926521712, now seen corresponding path program 1 times [2018-11-18 15:51:22,734 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:51:22,734 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:51:22,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:51:22,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:51:22,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:51:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:51:22,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:51:22,774 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 15:51:22,774 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 15:51:22,774 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 15:51:22,774 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 15:51:22,775 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 15:51:22,775 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:51:22,775 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 15:51:22,775 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 15:51:22,775 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration3_Loop [2018-11-18 15:51:22,775 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 15:51:22,775 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 15:51:22,776 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:51:22,780 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:51:22,815 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 15:51:22,815 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eb266011-392d-4dbf-8e40-72a7a4b7538e/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:51:22,823 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 15:51:22,824 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 15:51:22,834 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 15:51:22,834 INFO L448 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 /tmp/vcloud-vcloud-master/worker/working_dir_eb266011-392d-4dbf-8e40-72a7a4b7538e/bin-2019/uautomizer/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 [2018-11-18 15:51:22,849 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 15:51:22,849 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eb266011-392d-4dbf-8e40-72a7a4b7538e/bin-2019/uautomizer/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 [2018-11-18 15:51:22,866 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 15:51:22,866 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 15:51:22,882 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 15:51:22,883 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 15:51:22,883 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 15:51:22,883 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 15:51:22,883 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 15:51:22,883 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 15:51:22,884 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:51:22,884 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 15:51:22,884 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 15:51:22,884 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration3_Loop [2018-11-18 15:51:22,884 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 15:51:22,884 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 15:51:22,885 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:51:22,889 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:51:22,921 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 15:51:22,921 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 15:51:22,922 INFO L122 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 [2018-11-18 15:51:22,922 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 15:51:22,922 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 15:51:22,923 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 15:51:22,923 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 15:51:22,923 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 15:51:22,923 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 15:51:22,924 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 15:51:22,925 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 15:51:22,926 INFO L122 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 [2018-11-18 15:51:22,926 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 15:51:22,926 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 15:51:22,927 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 15:51:22,927 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 15:51:22,927 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 15:51:22,927 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 15:51:22,928 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 15:51:22,935 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 15:51:22,937 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 15:51:22,937 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 15:51:22,937 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 15:51:22,938 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 15:51:22,938 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 15:51:22,938 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2018-11-18 15:51:22,939 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 15:51:22,952 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:51:22,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:51:22,957 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:51:22,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:51:22,960 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:51:22,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:51:22,976 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 [2018-11-18 15:51:22,976 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 46 transitions. cyclomatic complexity: 14 Second operand 4 states. [2018-11-18 15:51:22,988 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 37 states and 46 transitions. cyclomatic complexity: 14. Second operand 4 states. Result 45 states and 56 transitions. Complement of second has 5 states. [2018-11-18 15:51:22,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-18 15:51:22,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 15:51:22,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 16 transitions. [2018-11-18 15:51:22,989 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 7 letters. Loop has 4 letters. [2018-11-18 15:51:22,989 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:51:22,989 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 11 letters. Loop has 4 letters. [2018-11-18 15:51:22,990 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:51:22,990 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 7 letters. Loop has 8 letters. [2018-11-18 15:51:22,990 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:51:22,990 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 56 transitions. [2018-11-18 15:51:22,991 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 16 [2018-11-18 15:51:22,991 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 42 states and 52 transitions. [2018-11-18 15:51:22,992 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2018-11-18 15:51:22,992 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 38 [2018-11-18 15:51:22,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 52 transitions. [2018-11-18 15:51:22,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 15:51:22,992 INFO L705 BuchiCegarLoop]: Abstraction has 42 states and 52 transitions. [2018-11-18 15:51:22,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 52 transitions. [2018-11-18 15:51:22,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2018-11-18 15:51:22,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-18 15:51:22,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2018-11-18 15:51:22,993 INFO L728 BuchiCegarLoop]: Abstraction has 41 states and 51 transitions. [2018-11-18 15:51:22,993 INFO L608 BuchiCegarLoop]: Abstraction has 41 states and 51 transitions. [2018-11-18 15:51:22,994 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-18 15:51:22,994 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 51 transitions. [2018-11-18 15:51:22,994 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 16 [2018-11-18 15:51:22,994 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 15:51:22,994 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 15:51:22,995 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:51:22,995 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 15:51:22,995 INFO L794 eck$LassoCheckResult]: Stem: 904#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 874#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;assume { :begin_inline_base2flt } true;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; 875#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 870#L69 base2flt_#res := base2flt_~__retres4~0; 871#L70 main_#t~ret4 := base2flt_#res;assume { :end_inline_base2flt } true;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 897#L19-1 assume !(0 == base2flt_~m % 4294967296); 884#L25-1 assume base2flt_~m % 4294967296 < 16777216; 885#L37-3 assume true; 878#L27-4 assume !false; 879#L28-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 888#L69-1 base2flt_#res := base2flt_~__retres4~0; 889#L70-1 main_#t~ret5 := base2flt_#res;assume { :end_inline_base2flt } true;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;assume { :begin_inline_base2flt } true;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; 892#L19-2 assume !(0 == base2flt_~m % 4294967296); 882#L25-2 assume !(base2flt_~m % 4294967296 < 16777216); 869#L47-11 [2018-11-18 15:51:22,995 INFO L796 eck$LassoCheckResult]: Loop: 869#L47-11 assume true; 895#L47-9 assume !false; 896#L48-2 assume base2flt_~m % 4294967296 >= 33554432; 867#L49-2 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 869#L47-11 [2018-11-18 15:51:22,995 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:51:22,995 INFO L82 PathProgramCache]: Analyzing trace with hash 639010956, now seen corresponding path program 1 times [2018-11-18 15:51:22,996 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:51:22,996 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:51:22,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:51:22,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:51:22,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:51:23,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:51:23,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:51:23,022 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 15:51:23,022 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 15:51:23,022 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-18 15:51:23,022 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:51:23,022 INFO L82 PathProgramCache]: Analyzing trace with hash 6193679, now seen corresponding path program 1 times [2018-11-18 15:51:23,022 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:51:23,023 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:51:23,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:51:23,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:51:23,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:51:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:51:23,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:51:23,049 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 15:51:23,049 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 15:51:23,049 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 15:51:23,049 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 15:51:23,049 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 15:51:23,050 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:51:23,050 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 15:51:23,050 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 15:51:23,050 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration4_Loop [2018-11-18 15:51:23,050 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 15:51:23,050 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 15:51:23,050 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:51:23,054 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:51:23,118 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 15:51:23,119 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eb266011-392d-4dbf-8e40-72a7a4b7538e/bin-2019/uautomizer/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 [2018-11-18 15:51:23,126 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 15:51:23,126 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eb266011-392d-4dbf-8e40-72a7a4b7538e/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:51:23,144 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 15:51:23,144 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 15:51:23,161 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 15:51:23,162 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 15:51:23,162 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 15:51:23,162 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 15:51:23,162 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 15:51:23,162 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 15:51:23,163 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:51:23,163 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 15:51:23,163 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 15:51:23,163 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration4_Loop [2018-11-18 15:51:23,163 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 15:51:23,163 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 15:51:23,164 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:51:23,167 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:51:23,215 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 15:51:23,216 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 15:51:23,216 INFO L122 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 [2018-11-18 15:51:23,216 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 15:51:23,216 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 15:51:23,217 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 15:51:23,219 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 15:51:23,219 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 15:51:23,219 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 15:51:23,219 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 15:51:23,221 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 15:51:23,222 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 15:51:23,222 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 15:51:23,223 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 15:51:23,223 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 15:51:23,223 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 15:51:23,223 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-11-18 15:51:23,223 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 15:51:23,232 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:51:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:51:23,245 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:51:23,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:51:23,248 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:51:23,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:51:23,249 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 [2018-11-18 15:51:23,249 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 41 states and 51 transitions. cyclomatic complexity: 15 Second operand 3 states. [2018-11-18 15:51:23,258 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 41 states and 51 transitions. cyclomatic complexity: 15. Second operand 3 states. Result 61 states and 74 transitions. Complement of second has 5 states. [2018-11-18 15:51:23,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-18 15:51:23,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 15:51:23,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2018-11-18 15:51:23,259 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 48 transitions. Stem has 14 letters. Loop has 4 letters. [2018-11-18 15:51:23,259 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:51:23,259 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 48 transitions. Stem has 18 letters. Loop has 4 letters. [2018-11-18 15:51:23,259 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:51:23,259 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 48 transitions. Stem has 14 letters. Loop has 8 letters. [2018-11-18 15:51:23,259 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:51:23,260 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 61 states and 74 transitions. [2018-11-18 15:51:23,260 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 20 [2018-11-18 15:51:23,261 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 61 states to 58 states and 70 transitions. [2018-11-18 15:51:23,261 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 49 [2018-11-18 15:51:23,261 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 50 [2018-11-18 15:51:23,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 70 transitions. [2018-11-18 15:51:23,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 15:51:23,261 INFO L705 BuchiCegarLoop]: Abstraction has 58 states and 70 transitions. [2018-11-18 15:51:23,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states and 70 transitions. [2018-11-18 15:51:23,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 45. [2018-11-18 15:51:23,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-18 15:51:23,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2018-11-18 15:51:23,265 INFO L728 BuchiCegarLoop]: Abstraction has 45 states and 56 transitions. [2018-11-18 15:51:23,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 15:51:23,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 15:51:23,266 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand 4 states. [2018-11-18 15:51:23,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:51:23,300 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2018-11-18 15:51:23,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 15:51:23,301 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 61 transitions. [2018-11-18 15:51:23,301 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 12 [2018-11-18 15:51:23,301 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 49 states and 59 transitions. [2018-11-18 15:51:23,301 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2018-11-18 15:51:23,302 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39 [2018-11-18 15:51:23,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 59 transitions. [2018-11-18 15:51:23,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 15:51:23,302 INFO L705 BuchiCegarLoop]: Abstraction has 49 states and 59 transitions. [2018-11-18 15:51:23,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 59 transitions. [2018-11-18 15:51:23,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2018-11-18 15:51:23,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-18 15:51:23,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2018-11-18 15:51:23,304 INFO L728 BuchiCegarLoop]: Abstraction has 45 states and 55 transitions. [2018-11-18 15:51:23,304 INFO L608 BuchiCegarLoop]: Abstraction has 45 states and 55 transitions. [2018-11-18 15:51:23,304 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-18 15:51:23,304 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 45 states and 55 transitions. [2018-11-18 15:51:23,304 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 12 [2018-11-18 15:51:23,304 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 15:51:23,304 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 15:51:23,304 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:51:23,304 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 15:51:23,305 INFO L794 eck$LassoCheckResult]: Stem: 1182#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1150#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;assume { :begin_inline_base2flt } true;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; 1151#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1146#L69 base2flt_#res := base2flt_~__retres4~0; 1147#L70 main_#t~ret4 := base2flt_#res;assume { :end_inline_base2flt } true;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1172#L19-1 assume !(0 == base2flt_~m % 4294967296); 1161#L25-1 assume base2flt_~m % 4294967296 < 16777216; 1162#L37-3 assume true; 1156#L27-4 assume !false; 1157#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1171#L37-2 assume !(base2flt_~m % 4294967296 < 16777216); 1179#L63-1 base2flt_~m := ~bitwiseAnd(base2flt_~m, ~bitwiseComplement(16777216));base2flt_~res~0 := ~bitwiseOr(base2flt_~m, 16777216 * (128 + base2flt_~e));base2flt_~__retres4~0 := base2flt_~res~0; 1165#L69-1 base2flt_#res := base2flt_~__retres4~0; 1166#L70-1 main_#t~ret5 := base2flt_#res;assume { :end_inline_base2flt } true;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;assume { :begin_inline_base2flt } true;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; 1169#L19-2 assume !(0 == base2flt_~m % 4294967296); 1158#L25-2 assume base2flt_~m % 4294967296 < 16777216; 1160#L37-5 [2018-11-18 15:51:23,305 INFO L796 eck$LassoCheckResult]: Loop: 1160#L37-5 assume true; 1180#L27-7 assume !false; 1167#L28-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1168#L37-4 assume base2flt_~m % 4294967296 < 16777216; 1160#L37-5 [2018-11-18 15:51:23,305 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:51:23,305 INFO L82 PathProgramCache]: Analyzing trace with hash 706889747, now seen corresponding path program 1 times [2018-11-18 15:51:23,305 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:51:23,305 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:51:23,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:51:23,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:51:23,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:51:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:51:23,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:51:23,342 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 15:51:23,342 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 15:51:23,342 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-18 15:51:23,342 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:51:23,342 INFO L82 PathProgramCache]: Analyzing trace with hash 5362570, now seen corresponding path program 1 times [2018-11-18 15:51:23,342 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:51:23,343 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:51:23,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:51:23,343 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:51:23,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:51:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:51:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:51:23,361 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 15:51:23,361 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 15:51:23,361 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 15:51:23,361 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 15:51:23,361 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 15:51:23,362 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:51:23,362 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 15:51:23,362 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 15:51:23,362 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration5_Loop [2018-11-18 15:51:23,362 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 15:51:23,362 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 15:51:23,363 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:51:23,366 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:51:23,395 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 15:51:23,395 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eb266011-392d-4dbf-8e40-72a7a4b7538e/bin-2019/uautomizer/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 [2018-11-18 15:51:23,397 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 15:51:23,397 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 15:51:23,403 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 15:51:23,404 INFO L448 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 /tmp/vcloud-vcloud-master/worker/working_dir_eb266011-392d-4dbf-8e40-72a7a4b7538e/bin-2019/uautomizer/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 [2018-11-18 15:51:23,419 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 15:51:23,419 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eb266011-392d-4dbf-8e40-72a7a4b7538e/bin-2019/uautomizer/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 [2018-11-18 15:51:23,436 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 15:51:23,436 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 15:51:23,452 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 15:51:23,453 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 15:51:23,453 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 15:51:23,453 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 15:51:23,453 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 15:51:23,454 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 15:51:23,454 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:51:23,454 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 15:51:23,454 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 15:51:23,454 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration5_Loop [2018-11-18 15:51:23,454 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 15:51:23,454 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 15:51:23,454 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:51:23,458 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:51:23,489 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 15:51:23,489 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 15:51:23,490 INFO L122 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 [2018-11-18 15:51:23,490 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 15:51:23,490 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 15:51:23,490 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 15:51:23,490 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 15:51:23,490 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 15:51:23,491 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 15:51:23,491 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 15:51:23,499 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 15:51:23,500 INFO L122 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 [2018-11-18 15:51:23,500 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 15:51:23,500 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 15:51:23,500 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 15:51:23,500 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 15:51:23,500 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 15:51:23,501 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 15:51:23,501 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 15:51:23,502 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 15:51:23,503 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 15:51:23,504 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 15:51:23,504 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 15:51:23,504 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 15:51:23,504 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 15:51:23,504 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2018-11-18 15:51:23,505 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 15:51:23,514 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:51:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:51:23,520 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:51:23,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:51:23,536 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:51:23,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:51:23,548 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 [2018-11-18 15:51:23,548 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 45 states and 55 transitions. cyclomatic complexity: 15 Second operand 4 states. [2018-11-18 15:51:23,555 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 45 states and 55 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 66 states and 79 transitions. Complement of second has 5 states. [2018-11-18 15:51:23,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-18 15:51:23,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 15:51:23,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2018-11-18 15:51:23,556 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 16 letters. Loop has 4 letters. [2018-11-18 15:51:23,556 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:51:23,556 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 20 letters. Loop has 4 letters. [2018-11-18 15:51:23,556 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:51:23,557 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 16 letters. Loop has 8 letters. [2018-11-18 15:51:23,557 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:51:23,557 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 66 states and 79 transitions. [2018-11-18 15:51:23,557 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 16 [2018-11-18 15:51:23,558 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 66 states to 63 states and 75 transitions. [2018-11-18 15:51:23,558 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 48 [2018-11-18 15:51:23,558 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 51 [2018-11-18 15:51:23,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 75 transitions. [2018-11-18 15:51:23,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 15:51:23,558 INFO L705 BuchiCegarLoop]: Abstraction has 63 states and 75 transitions. [2018-11-18 15:51:23,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states and 75 transitions. [2018-11-18 15:51:23,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 49. [2018-11-18 15:51:23,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-11-18 15:51:23,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 60 transitions. [2018-11-18 15:51:23,560 INFO L728 BuchiCegarLoop]: Abstraction has 49 states and 60 transitions. [2018-11-18 15:51:23,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 15:51:23,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 15:51:23,561 INFO L87 Difference]: Start difference. First operand 49 states and 60 transitions. Second operand 4 states. [2018-11-18 15:51:23,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:51:23,600 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2018-11-18 15:51:23,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 15:51:23,600 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 60 states and 72 transitions. [2018-11-18 15:51:23,601 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-18 15:51:23,601 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 60 states to 60 states and 72 transitions. [2018-11-18 15:51:23,601 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2018-11-18 15:51:23,601 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2018-11-18 15:51:23,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 72 transitions. [2018-11-18 15:51:23,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 15:51:23,602 INFO L705 BuchiCegarLoop]: Abstraction has 60 states and 72 transitions. [2018-11-18 15:51:23,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 72 transitions. [2018-11-18 15:51:23,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 52. [2018-11-18 15:51:23,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-11-18 15:51:23,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2018-11-18 15:51:23,603 INFO L728 BuchiCegarLoop]: Abstraction has 52 states and 64 transitions. [2018-11-18 15:51:23,603 INFO L608 BuchiCegarLoop]: Abstraction has 52 states and 64 transitions. [2018-11-18 15:51:23,603 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-18 15:51:23,603 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 52 states and 64 transitions. [2018-11-18 15:51:23,604 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-18 15:51:23,604 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 15:51:23,604 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 15:51:23,604 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:51:23,604 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 15:51:23,605 INFO L794 eck$LassoCheckResult]: Stem: 1488#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1451#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;assume { :begin_inline_base2flt } true;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; 1452#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1447#L69 base2flt_#res := base2flt_~__retres4~0; 1448#L70 main_#t~ret4 := base2flt_#res;assume { :end_inline_base2flt } true;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1478#L19-1 assume !(0 == base2flt_~m % 4294967296); 1462#L25-1 assume base2flt_~m % 4294967296 < 16777216; 1463#L37-3 assume true; 1457#L27-4 assume !false; 1458#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1473#L37-2 assume base2flt_~m % 4294967296 < 16777216; 1492#L37-3 assume true; 1455#L27-4 assume !false; 1456#L28-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 1466#L69-1 base2flt_#res := base2flt_~__retres4~0; 1467#L70-1 main_#t~ret5 := base2flt_#res;assume { :end_inline_base2flt } true;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;assume { :begin_inline_base2flt } true;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; 1471#L19-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1444#L69-2 base2flt_#res := base2flt_~__retres4~0; 1464#L70-2 main_#t~ret6 := base2flt_#res;assume { :end_inline_base2flt } true;main_~a~0 := main_#t~ret6;havoc main_#t~ret6;assume { :begin_inline_base2flt } true;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; 1472#L19-3 assume !(0 == base2flt_~m % 4294967296); 1453#L25-3 assume !(base2flt_~m % 4294967296 < 16777216); 1454#L47-15 [2018-11-18 15:51:23,605 INFO L796 eck$LassoCheckResult]: Loop: 1454#L47-15 assume true; 1487#L47-13 assume !false; 1489#L48-3 assume base2flt_~m % 4294967296 >= 33554432; 1465#L49-3 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 1454#L47-15 [2018-11-18 15:51:23,605 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:51:23,605 INFO L82 PathProgramCache]: Analyzing trace with hash -241412798, now seen corresponding path program 1 times [2018-11-18 15:51:23,605 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:51:23,605 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:51:23,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:51:23,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:51:23,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:51:23,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:51:23,631 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:51:23,632 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:51:23,632 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eb266011-392d-4dbf-8e40-72a7a4b7538e/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:51:23,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:51:23,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:51:23,658 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:51:23,661 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:51:23,686 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:51:23,686 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2018-11-18 15:51:23,687 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-18 15:51:23,687 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:51:23,687 INFO L82 PathProgramCache]: Analyzing trace with hash 8194639, now seen corresponding path program 1 times [2018-11-18 15:51:23,687 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:51:23,687 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:51:23,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:51:23,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:51:23,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:51:23,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:51:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:51:23,709 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 15:51:23,709 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 15:51:23,709 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 15:51:23,709 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 15:51:23,709 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 15:51:23,709 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:51:23,709 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 15:51:23,709 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 15:51:23,710 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration6_Loop [2018-11-18 15:51:23,710 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 15:51:23,710 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 15:51:23,710 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:51:23,718 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:51:23,755 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 15:51:23,755 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eb266011-392d-4dbf-8e40-72a7a4b7538e/bin-2019/uautomizer/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 [2018-11-18 15:51:23,757 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 15:51:23,757 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eb266011-392d-4dbf-8e40-72a7a4b7538e/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:51:23,776 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 15:51:23,776 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 15:51:23,792 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 15:51:23,793 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 15:51:23,793 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 15:51:23,793 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 15:51:23,793 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 15:51:23,793 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 15:51:23,793 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:51:23,794 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 15:51:23,794 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 15:51:23,794 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration6_Loop [2018-11-18 15:51:23,794 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 15:51:23,794 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 15:51:23,794 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:51:23,798 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:51:23,836 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 15:51:23,836 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 15:51:23,837 INFO L122 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 [2018-11-18 15:51:23,837 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 15:51:23,837 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 15:51:23,837 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 15:51:23,837 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 15:51:23,838 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 15:51:23,838 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 15:51:23,838 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 15:51:23,839 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 15:51:23,840 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 15:51:23,840 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 15:51:23,840 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 15:51:23,840 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 15:51:23,840 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 15:51:23,841 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-11-18 15:51:23,841 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 15:51:23,849 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:51:23,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:51:23,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:51:23,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:51:23,874 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:51:23,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:51:23,874 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 [2018-11-18 15:51:23,875 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 52 states and 64 transitions. cyclomatic complexity: 17 Second operand 3 states. [2018-11-18 15:51:23,880 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 52 states and 64 transitions. cyclomatic complexity: 17. Second operand 3 states. Result 56 states and 69 transitions. Complement of second has 4 states. [2018-11-18 15:51:23,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-18 15:51:23,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 15:51:23,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 46 transitions. [2018-11-18 15:51:23,881 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 46 transitions. Stem has 21 letters. Loop has 4 letters. [2018-11-18 15:51:23,881 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:51:23,881 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 46 transitions. Stem has 25 letters. Loop has 4 letters. [2018-11-18 15:51:23,882 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:51:23,882 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 46 transitions. Stem has 21 letters. Loop has 8 letters. [2018-11-18 15:51:23,882 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:51:23,882 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 69 transitions. [2018-11-18 15:51:23,883 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 15:51:23,883 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 48 states and 59 transitions. [2018-11-18 15:51:23,883 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2018-11-18 15:51:23,884 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2018-11-18 15:51:23,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 59 transitions. [2018-11-18 15:51:23,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 15:51:23,884 INFO L705 BuchiCegarLoop]: Abstraction has 48 states and 59 transitions. [2018-11-18 15:51:23,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 59 transitions. [2018-11-18 15:51:23,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-11-18 15:51:23,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-11-18 15:51:23,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 59 transitions. [2018-11-18 15:51:23,886 INFO L728 BuchiCegarLoop]: Abstraction has 48 states and 59 transitions. [2018-11-18 15:51:23,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 15:51:23,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-18 15:51:23,886 INFO L87 Difference]: Start difference. First operand 48 states and 59 transitions. Second operand 5 states. [2018-11-18 15:51:23,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:51:23,926 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2018-11-18 15:51:23,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 15:51:23,926 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 66 transitions. [2018-11-18 15:51:23,927 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 15:51:23,927 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 53 states and 63 transitions. [2018-11-18 15:51:23,927 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2018-11-18 15:51:23,927 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2018-11-18 15:51:23,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 63 transitions. [2018-11-18 15:51:23,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 15:51:23,928 INFO L705 BuchiCegarLoop]: Abstraction has 53 states and 63 transitions. [2018-11-18 15:51:23,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states and 63 transitions. [2018-11-18 15:51:23,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 48. [2018-11-18 15:51:23,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-11-18 15:51:23,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2018-11-18 15:51:23,929 INFO L728 BuchiCegarLoop]: Abstraction has 48 states and 58 transitions. [2018-11-18 15:51:23,930 INFO L608 BuchiCegarLoop]: Abstraction has 48 states and 58 transitions. [2018-11-18 15:51:23,930 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-11-18 15:51:23,930 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 48 states and 58 transitions. [2018-11-18 15:51:23,930 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 15:51:23,930 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 15:51:23,930 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 15:51:23,931 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:51:23,931 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 15:51:23,931 INFO L794 eck$LassoCheckResult]: Stem: 1855#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1820#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;assume { :begin_inline_base2flt } true;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; 1821#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1816#L69 base2flt_#res := base2flt_~__retres4~0; 1817#L70 main_#t~ret4 := base2flt_#res;assume { :end_inline_base2flt } true;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1842#L19-1 assume !(0 == base2flt_~m % 4294967296); 1830#L25-1 assume base2flt_~m % 4294967296 < 16777216; 1831#L37-3 assume true; 1859#L27-4 assume !false; 1840#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1841#L37-2 assume base2flt_~m % 4294967296 < 16777216; 1857#L37-3 assume true; 1825#L27-4 assume !false; 1826#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1858#L37-2 assume !(base2flt_~m % 4294967296 < 16777216); 1849#L63-1 base2flt_~m := ~bitwiseAnd(base2flt_~m, ~bitwiseComplement(16777216));base2flt_~res~0 := ~bitwiseOr(base2flt_~m, 16777216 * (128 + base2flt_~e));base2flt_~__retres4~0 := base2flt_~res~0; 1833#L69-1 base2flt_#res := base2flt_~__retres4~0; 1834#L70-1 main_#t~ret5 := base2flt_#res;assume { :end_inline_base2flt } true;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;assume { :begin_inline_base2flt } true;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; 1838#L19-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1813#L69-2 base2flt_#res := base2flt_~__retres4~0; 1832#L70-2 main_#t~ret6 := base2flt_#res;assume { :end_inline_base2flt } true;main_~a~0 := main_#t~ret6;havoc main_#t~ret6;assume { :begin_inline_base2flt } true;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; 1839#L19-3 assume !(0 == base2flt_~m % 4294967296); 1822#L25-3 assume base2flt_~m % 4294967296 < 16777216; 1818#L37-7 [2018-11-18 15:51:23,931 INFO L796 eck$LassoCheckResult]: Loop: 1818#L37-7 assume true; 1819#L27-10 assume !false; 1847#L28-3 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1852#L37-6 assume base2flt_~m % 4294967296 < 16777216; 1818#L37-7 [2018-11-18 15:51:23,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:51:23,931 INFO L82 PathProgramCache]: Analyzing trace with hash 476429317, now seen corresponding path program 1 times [2018-11-18 15:51:23,931 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:51:23,931 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:51:23,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:51:23,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:51:23,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:51:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:51:23,972 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:51:23,972 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:51:23,972 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eb266011-392d-4dbf-8e40-72a7a4b7538e/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:51:23,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:51:23,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:51:24,000 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:51:24,013 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:51:24,028 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:51:24,028 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-11-18 15:51:24,028 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-18 15:51:24,029 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:51:24,029 INFO L82 PathProgramCache]: Analyzing trace with hash 7363530, now seen corresponding path program 1 times [2018-11-18 15:51:24,029 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:51:24,029 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:51:24,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:51:24,029 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:51:24,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:51:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:51:24,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:51:24,053 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 15:51:24,053 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 15:51:24,053 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 15:51:24,053 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 15:51:24,053 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 15:51:24,053 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:51:24,053 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 15:51:24,053 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 15:51:24,053 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration7_Loop [2018-11-18 15:51:24,053 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 15:51:24,053 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 15:51:24,054 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:51:24,060 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:51:24,090 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 15:51:24,091 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eb266011-392d-4dbf-8e40-72a7a4b7538e/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:51:24,093 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 15:51:24,093 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 15:51:24,102 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 15:51:24,102 INFO L448 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 /tmp/vcloud-vcloud-master/worker/working_dir_eb266011-392d-4dbf-8e40-72a7a4b7538e/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:51:24,119 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 15:51:24,120 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eb266011-392d-4dbf-8e40-72a7a4b7538e/bin-2019/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:51:24,137 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 15:51:24,137 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 15:51:24,154 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 15:51:24,155 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 15:51:24,156 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 15:51:24,156 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 15:51:24,156 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 15:51:24,156 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 15:51:24,156 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:51:24,156 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 15:51:24,156 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 15:51:24,156 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration7_Loop [2018-11-18 15:51:24,156 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 15:51:24,156 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 15:51:24,157 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:51:24,162 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:51:24,193 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 15:51:24,193 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 15:51:24,193 INFO L122 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 [2018-11-18 15:51:24,195 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 15:51:24,195 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 15:51:24,195 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 15:51:24,195 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 15:51:24,195 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 15:51:24,196 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 15:51:24,196 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 15:51:24,197 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 15:51:24,197 INFO L122 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 [2018-11-18 15:51:24,197 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 15:51:24,197 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 15:51:24,198 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 15:51:24,198 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 15:51:24,198 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 15:51:24,198 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 15:51:24,198 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 15:51:24,199 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 15:51:24,201 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 15:51:24,201 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 15:51:24,201 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 15:51:24,201 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 15:51:24,201 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 15:51:24,201 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2018-11-18 15:51:24,201 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 15:51:24,215 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:51:24,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:51:24,225 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:51:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:51:24,230 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:51:24,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:51:24,238 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 [2018-11-18 15:51:24,238 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 48 states and 58 transitions. cyclomatic complexity: 14 Second operand 4 states. [2018-11-18 15:51:24,242 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 48 states and 58 transitions. cyclomatic complexity: 14. Second operand 4 states. Result 53 states and 64 transitions. Complement of second has 4 states. [2018-11-18 15:51:24,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-18 15:51:24,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 15:51:24,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2018-11-18 15:51:24,243 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 42 transitions. Stem has 23 letters. Loop has 4 letters. [2018-11-18 15:51:24,244 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:51:24,244 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 42 transitions. Stem has 27 letters. Loop has 4 letters. [2018-11-18 15:51:24,244 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:51:24,244 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 42 transitions. Stem has 23 letters. Loop has 8 letters. [2018-11-18 15:51:24,244 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:51:24,244 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 53 states and 64 transitions. [2018-11-18 15:51:24,245 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 15:51:24,245 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 53 states to 0 states and 0 transitions. [2018-11-18 15:51:24,245 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-18 15:51:24,245 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-18 15:51:24,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-18 15:51:24,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 15:51:24,245 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 15:51:24,245 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 15:51:24,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 15:51:24,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-18 15:51:24,246 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 6 states. [2018-11-18 15:51:24,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:51:24,246 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-11-18 15:51:24,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 15:51:24,246 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-11-18 15:51:24,246 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 15:51:24,246 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 15:51:24,246 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-18 15:51:24,246 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-18 15:51:24,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-18 15:51:24,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 15:51:24,247 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 15:51:24,247 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 15:51:24,248 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 15:51:24,248 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-11-18 15:51:24,248 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-18 15:51:24,248 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 15:51:24,248 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-18 15:51:24,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.11 03:51:24 BoogieIcfgContainer [2018-11-18 15:51:24,259 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-18 15:51:24,259 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 15:51:24,259 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 15:51:24,259 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 15:51:24,260 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:51:21" (3/4) ... [2018-11-18 15:51:24,263 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 15:51:24,263 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 15:51:24,263 INFO L168 Benchmark]: Toolchain (without parser) took 3330.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 959.2 MB in the beginning and 880.6 MB in the end (delta: 78.7 MB). Peak memory consumption was 213.4 MB. Max. memory is 11.5 GB. [2018-11-18 15:51:24,264 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 15:51:24,264 INFO L168 Benchmark]: CACSL2BoogieTranslator took 217.93 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 943.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 15:51:24,265 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 943.1 MB in the beginning and 1.1 GB in the end (delta: -191.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2018-11-18 15:51:24,265 INFO L168 Benchmark]: Boogie Preprocessor took 17.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 15:51:24,266 INFO L168 Benchmark]: RCFGBuilder took 340.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.9 MB). Peak memory consumption was 28.9 MB. Max. memory is 11.5 GB. [2018-11-18 15:51:24,266 INFO L168 Benchmark]: BuchiAutomizer took 2683.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 883.8 MB in the end (delta: 216.6 MB). Peak memory consumption was 216.6 MB. Max. memory is 11.5 GB. [2018-11-18 15:51:24,266 INFO L168 Benchmark]: Witness Printer took 3.72 ms. Allocated memory is still 1.2 GB. Free memory was 883.8 MB in the beginning and 880.6 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-11-18 15:51:24,269 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 217.93 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 943.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 63.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 943.1 MB in the beginning and 1.1 GB in the end (delta: -191.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 340.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.9 MB). Peak memory consumption was 28.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2683.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 883.8 MB in the end (delta: 216.6 MB). Peak memory consumption was 216.6 MB. Max. memory is 11.5 GB. * Witness Printer took 3.72 ms. Allocated memory is still 1.2 GB. Free memory was 883.8 MB in the beginning and 880.6 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 13 terminating modules (6 trivial, 7 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * e + 253 and consists of 4 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. 6 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.6s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 1.9s. Construction of modules took 0.1s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 9. Automata minimization 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 89 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 52 states and ocurred in iteration 5. Nontrivial modules had stage [7, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 588 SDtfs, 387 SDslu, 219 SDs, 0 SdLazy, 229 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT6 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf95 lsp57 ukn100 mio100 lsp100 div596 bol100 ite100 ukn100 eq131 hnf43 smp92 dnf100 smp100 tf105 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 11ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...