./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/bitvector/soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_0345d0a7-e172-4f09-b08e-83a7bd178695/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0345d0a7-e172-4f09-b08e-83a7bd178695/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0345d0a7-e172-4f09-b08e-83a7bd178695/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0345d0a7-e172-4f09-b08e-83a7bd178695/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/bitvector/soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_0345d0a7-e172-4f09-b08e-83a7bd178695/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0345d0a7-e172-4f09-b08e-83a7bd178695/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 45b185c6c694406b0734db5727dff1b8fd93ebcf ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-02 15:21:29,605 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 15:21:29,606 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 15:21:29,612 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 15:21:29,612 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 15:21:29,612 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 15:21:29,613 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 15:21:29,614 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 15:21:29,615 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 15:21:29,615 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 15:21:29,616 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 15:21:29,616 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 15:21:29,616 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 15:21:29,617 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 15:21:29,617 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 15:21:29,618 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 15:21:29,618 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 15:21:29,619 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 15:21:29,620 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 15:21:29,621 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 15:21:29,622 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 15:21:29,622 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 15:21:29,623 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 15:21:29,623 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 15:21:29,624 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 15:21:29,624 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 15:21:29,625 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 15:21:29,625 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 15:21:29,625 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 15:21:29,626 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 15:21:29,626 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 15:21:29,626 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 15:21:29,627 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 15:21:29,627 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 15:21:29,627 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 15:21:29,628 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 15:21:29,628 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0345d0a7-e172-4f09-b08e-83a7bd178695/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-12-02 15:21:29,635 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 15:21:29,636 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 15:21:29,636 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 15:21:29,636 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 15:21:29,636 INFO L133 SettingsManager]: * Use SBE=true [2018-12-02 15:21:29,637 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-12-02 15:21:29,637 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-12-02 15:21:29,637 INFO L133 SettingsManager]: * Use old map elimination=false [2018-12-02 15:21:29,637 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-12-02 15:21:29,637 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-12-02 15:21:29,637 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-12-02 15:21:29,637 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 15:21:29,637 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 15:21:29,637 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-02 15:21:29,637 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 15:21:29,638 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 15:21:29,638 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 15:21:29,638 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-12-02 15:21:29,638 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-12-02 15:21:29,638 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-12-02 15:21:29,638 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 15:21:29,638 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 15:21:29,638 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-12-02 15:21:29,638 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 15:21:29,638 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-12-02 15:21:29,638 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 15:21:29,639 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 15:21:29,639 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-12-02 15:21:29,639 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 15:21:29,639 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-02 15:21:29,639 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-12-02 15:21:29,639 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-12-02 15:21:29,640 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_0345d0a7-e172-4f09-b08e-83a7bd178695/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 -> 45b185c6c694406b0734db5727dff1b8fd93ebcf [2018-12-02 15:21:29,656 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 15:21:29,666 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 15:21:29,668 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 15:21:29,669 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 15:21:29,670 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 15:21:29,670 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0345d0a7-e172-4f09-b08e-83a7bd178695/bin-2019/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-12-02 15:21:29,715 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0345d0a7-e172-4f09-b08e-83a7bd178695/bin-2019/uautomizer/data/fde7617c2/62bbda2b0fbb4ce99070d9232d763a62/FLAG2aab08df9 [2018-12-02 15:21:30,173 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 15:21:30,173 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0345d0a7-e172-4f09-b08e-83a7bd178695/sv-benchmarks/c/bitvector/soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-12-02 15:21:30,177 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0345d0a7-e172-4f09-b08e-83a7bd178695/bin-2019/uautomizer/data/fde7617c2/62bbda2b0fbb4ce99070d9232d763a62/FLAG2aab08df9 [2018-12-02 15:21:30,185 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0345d0a7-e172-4f09-b08e-83a7bd178695/bin-2019/uautomizer/data/fde7617c2/62bbda2b0fbb4ce99070d9232d763a62 [2018-12-02 15:21:30,187 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 15:21:30,188 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 15:21:30,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 15:21:30,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 15:21:30,190 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 15:21:30,190 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:21:30" (1/1) ... [2018-12-02 15:21:30,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47e9f86c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:30, skipping insertion in model container [2018-12-02 15:21:30,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:21:30" (1/1) ... [2018-12-02 15:21:30,197 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 15:21:30,211 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 15:21:30,318 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 15:21:30,320 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 15:21:30,346 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 15:21:30,355 INFO L195 MainTranslator]: Completed translation [2018-12-02 15:21:30,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:30 WrapperNode [2018-12-02 15:21:30,355 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 15:21:30,355 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 15:21:30,355 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 15:21:30,356 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 15:21:30,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:30" (1/1) ... [2018-12-02 15:21:30,366 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:30" (1/1) ... [2018-12-02 15:21:30,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 15:21:30,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 15:21:30,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 15:21:30,415 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 15:21:30,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:30" (1/1) ... [2018-12-02 15:21:30,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:30" (1/1) ... [2018-12-02 15:21:30,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:30" (1/1) ... [2018-12-02 15:21:30,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:30" (1/1) ... [2018-12-02 15:21:30,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:30" (1/1) ... [2018-12-02 15:21:30,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:30" (1/1) ... [2018-12-02 15:21:30,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:30" (1/1) ... [2018-12-02 15:21:30,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 15:21:30,436 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 15:21:30,436 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 15:21:30,436 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 15:21:30,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0345d0a7-e172-4f09-b08e-83a7bd178695/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 [2018-12-02 15:21:30,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 15:21:30,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 15:21:30,677 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 15:21:30,677 INFO L280 CfgBuilder]: Removed 24 assue(true) statements. [2018-12-02 15:21:30,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:21:30 BoogieIcfgContainer [2018-12-02 15:21:30,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 15:21:30,678 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-12-02 15:21:30,678 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-12-02 15:21:30,682 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-12-02 15:21:30,682 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-02 15:21:30,682 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 02.12 03:21:30" (1/3) ... [2018-12-02 15:21:30,683 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6d162dd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.12 03:21:30, skipping insertion in model container [2018-12-02 15:21:30,684 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-02 15:21:30,684 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:30" (2/3) ... [2018-12-02 15:21:30,684 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6d162dd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.12 03:21:30, skipping insertion in model container [2018-12-02 15:21:30,684 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-02 15:21:30,684 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:21:30" (3/3) ... [2018-12-02 15:21:30,686 INFO L375 chiAutomizerObserver]: Analyzing ICFG soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-12-02 15:21:30,726 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 15:21:30,727 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-12-02 15:21:30,727 INFO L375 BuchiCegarLoop]: Hoare is false [2018-12-02 15:21:30,727 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-12-02 15:21:30,727 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 15:21:30,728 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 15:21:30,728 INFO L379 BuchiCegarLoop]: Difference is false [2018-12-02 15:21:30,728 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 15:21:30,728 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-12-02 15:21:30,738 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 70 states. [2018-12-02 15:21:30,756 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2018-12-02 15:21:30,757 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-02 15:21:30,757 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-02 15:21:30,760 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-12-02 15:21:30,761 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-02 15:21:30,761 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-12-02 15:21:30,761 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 70 states. [2018-12-02 15:21:30,763 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2018-12-02 15:21:30,763 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-02 15:21:30,763 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-02 15:21:30,764 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-12-02 15:21:30,764 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-02 15:21:30,769 INFO L794 eck$LassoCheckResult]: Stem: 34#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 30#L19true assume !(0 == base2flt_~m % 4294967296); 17#L25true assume !(base2flt_~m % 4294967296 < 16777216); 13#L47-2true [2018-12-02 15:21:30,769 INFO L796 eck$LassoCheckResult]: Loop: 13#L47-2true assume !false; 22#L48true assume base2flt_~m % 4294967296 >= 33554432; 47#L49true assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 13#L47-2true [2018-12-02 15:21:30,774 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 15:21:30,774 INFO L82 PathProgramCache]: Analyzing trace with hash 30973, now seen corresponding path program 1 times [2018-12-02 15:21:30,776 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 15:21:30,776 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 15:21:30,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 15:21:30,808 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 15:21:30,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 15:21:30,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 15:21:30,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 15:21:30,882 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 15:21:30,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-12-02 15:21:30,885 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-02 15:21:30,885 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 15:21:30,885 INFO L82 PathProgramCache]: Analyzing trace with hash 73619, now seen corresponding path program 1 times [2018-12-02 15:21:30,885 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 15:21:30,885 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 15:21:30,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 15:21:30,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 15:21:30,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 15:21:30,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 15:21:30,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 15:21:30,930 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 15:21:30,930 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 15:21:30,931 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 15:21:30,931 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 15:21:30,931 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-02 15:21:30,931 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 15:21:30,931 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 15:21:30,931 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 15:21:30,931 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration1_Loop [2018-12-02 15:21:30,931 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 15:21:30,931 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 15:21:30,944 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 15:21:30,953 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 15:21:31,026 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 15:21:31,027 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0345d0a7-e172-4f09-b08e-83a7bd178695/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 [2018-12-02 15:21:31,031 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 15:21:31,031 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 15:21:31,055 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 15:21:31,055 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_0345d0a7-e172-4f09-b08e-83a7bd178695/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 [2018-12-02 15:21:31,070 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 15:21:31,070 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0345d0a7-e172-4f09-b08e-83a7bd178695/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 [2018-12-02 15:21:31,086 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-02 15:21:31,086 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 15:21:31,102 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-02 15:21:31,103 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 15:21:31,103 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 15:21:31,103 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 15:21:31,103 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 15:21:31,104 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-02 15:21:31,104 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 15:21:31,104 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 15:21:31,104 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 15:21:31,104 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration1_Loop [2018-12-02 15:21:31,104 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 15:21:31,104 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 15:21:31,105 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 15:21:31,110 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 15:21:31,167 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 15:21:31,170 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-02 15:21:31,171 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 [2018-12-02 15:21:31,172 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 15:21:31,172 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 15:21:31,173 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 15:21:31,173 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 15:21:31,173 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 15:21:31,174 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 15:21:31,174 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 15:21:31,183 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 15:21:31,183 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 [2018-12-02 15:21:31,184 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 15:21:31,184 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 15:21:31,184 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 15:21:31,184 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 15:21:31,184 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 15:21:31,184 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 15:21:31,184 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 15:21:31,187 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-02 15:21:31,189 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-02 15:21:31,190 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-02 15:21:31,191 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-02 15:21:31,191 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-02 15:21:31,191 INFO L518 LassoAnalysis]: Proved termination. [2018-12-02 15:21:31,191 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-12-02 15:21:31,192 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-02 15:21:31,208 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 15:21:31,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 15:21:31,219 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 15:21:31,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 15:21:31,227 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 15:21:31,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 15:21:31,239 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 [2018-12-02 15:21:31,239 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 70 states. Second operand 3 states. [2018-12-02 15:21:31,284 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 70 states.. Second operand 3 states. Result 203 states and 343 transitions. Complement of second has 6 states. [2018-12-02 15:21:31,284 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 [2018-12-02 15:21:31,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-02 15:21:31,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 227 transitions. [2018-12-02 15:21:31,288 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 3 letters. Loop has 3 letters. [2018-12-02 15:21:31,289 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 15:21:31,290 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 6 letters. Loop has 3 letters. [2018-12-02 15:21:31,290 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 15:21:31,290 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 3 letters. Loop has 6 letters. [2018-12-02 15:21:31,290 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 15:21:31,291 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 203 states and 343 transitions. [2018-12-02 15:21:31,296 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 39 [2018-12-02 15:21:31,300 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 203 states to 78 states and 119 transitions. [2018-12-02 15:21:31,301 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2018-12-02 15:21:31,301 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 75 [2018-12-02 15:21:31,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 119 transitions. [2018-12-02 15:21:31,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-02 15:21:31,302 INFO L705 BuchiCegarLoop]: Abstraction has 78 states and 119 transitions. [2018-12-02 15:21:31,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states and 119 transitions. [2018-12-02 15:21:31,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 67. [2018-12-02 15:21:31,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-12-02 15:21:31,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 107 transitions. [2018-12-02 15:21:31,321 INFO L728 BuchiCegarLoop]: Abstraction has 67 states and 107 transitions. [2018-12-02 15:21:31,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 15:21:31,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 15:21:31,324 INFO L87 Difference]: Start difference. First operand 67 states and 107 transitions. Second operand 3 states. [2018-12-02 15:21:31,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 15:21:31,353 INFO L93 Difference]: Finished difference Result 34 states and 47 transitions. [2018-12-02 15:21:31,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 15:21:31,354 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 47 transitions. [2018-12-02 15:21:31,355 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2018-12-02 15:21:31,355 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 34 states and 47 transitions. [2018-12-02 15:21:31,355 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2018-12-02 15:21:31,356 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2018-12-02 15:21:31,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 47 transitions. [2018-12-02 15:21:31,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-02 15:21:31,356 INFO L705 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2018-12-02 15:21:31,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 47 transitions. [2018-12-02 15:21:31,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-12-02 15:21:31,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-02 15:21:31,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2018-12-02 15:21:31,358 INFO L728 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2018-12-02 15:21:31,358 INFO L608 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2018-12-02 15:21:31,358 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-12-02 15:21:31,358 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 47 transitions. [2018-12-02 15:21:31,358 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2018-12-02 15:21:31,358 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-02 15:21:31,358 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-02 15:21:31,359 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-12-02 15:21:31,359 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-02 15:21:31,359 INFO L794 eck$LassoCheckResult]: Stem: 447#ULTIMATE.startENTRY 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_~sa~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_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 445#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 418#L69 base2flt_#res := base2flt_~__retres4~0; 419#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;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; 442#L19-1 assume !(0 == base2flt_~m % 4294967296); 430#L25-1 assume !(base2flt_~m % 4294967296 < 16777216); 422#L47-5 [2018-12-02 15:21:31,359 INFO L796 eck$LassoCheckResult]: Loop: 422#L47-5 assume !false; 425#L48-1 assume base2flt_~m % 4294967296 >= 33554432; 420#L49-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 422#L47-5 [2018-12-02 15:21:31,359 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 15:21:31,359 INFO L82 PathProgramCache]: Analyzing trace with hash 921737699, now seen corresponding path program 1 times [2018-12-02 15:21:31,359 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 15:21:31,359 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 15:21:31,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 15:21:31,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 15:21:31,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 15:21:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 15:21:31,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 15:21:31,388 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 15:21:31,389 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 15:21:31,389 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-02 15:21:31,389 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 15:21:31,389 INFO L82 PathProgramCache]: Analyzing trace with hash 136178, now seen corresponding path program 1 times [2018-12-02 15:21:31,389 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 15:21:31,389 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 15:21:31,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 15:21:31,390 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 15:21:31,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 15:21:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 15:21:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 15:21:31,418 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 15:21:31,418 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 15:21:31,419 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 15:21:31,419 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 15:21:31,419 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-02 15:21:31,419 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 15:21:31,419 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 15:21:31,419 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 15:21:31,419 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration2_Loop [2018-12-02 15:21:31,419 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 15:21:31,419 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 15:21:31,420 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 15:21:31,424 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 15:21:31,481 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 15:21:31,481 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0345d0a7-e172-4f09-b08e-83a7bd178695/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 [2018-12-02 15:21:31,483 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 15:21:31,483 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 15:21:31,516 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 15:21:31,516 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_0345d0a7-e172-4f09-b08e-83a7bd178695/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 [2018-12-02 15:21:31,539 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 15:21:31,539 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0345d0a7-e172-4f09-b08e-83a7bd178695/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 [2018-12-02 15:21:31,555 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-02 15:21:31,555 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 15:21:31,571 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-02 15:21:31,572 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 15:21:31,572 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 15:21:31,572 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 15:21:31,572 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 15:21:31,572 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-02 15:21:31,572 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 15:21:31,572 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 15:21:31,572 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 15:21:31,573 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration2_Loop [2018-12-02 15:21:31,573 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 15:21:31,573 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 15:21:31,573 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 15:21:31,578 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 15:21:31,615 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 15:21:31,616 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-02 15:21:31,616 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 [2018-12-02 15:21:31,617 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 15:21:31,617 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 15:21:31,617 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 15:21:31,617 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 15:21:31,617 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 15:21:31,617 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 15:21:31,617 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 15:21:31,622 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 15:21:31,622 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 [2018-12-02 15:21:31,622 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 15:21:31,622 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 15:21:31,622 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 15:21:31,622 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 15:21:31,623 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 15:21:31,623 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 15:21:31,623 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 15:21:31,625 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-02 15:21:31,626 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-02 15:21:31,627 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-02 15:21:31,627 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-02 15:21:31,627 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-02 15:21:31,627 INFO L518 LassoAnalysis]: Proved termination. [2018-12-02 15:21:31,627 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-12-02 15:21:31,627 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-02 15:21:31,635 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 15:21:31,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 15:21:31,641 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 15:21:31,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 15:21:31,644 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 15:21:31,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 15:21:31,645 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 [2018-12-02 15:21:31,645 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 47 transitions. cyclomatic complexity: 19 Second operand 3 states. [2018-12-02 15:21:31,653 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 34 states and 47 transitions. cyclomatic complexity: 19. Second operand 3 states. Result 62 states and 84 transitions. Complement of second has 5 states. [2018-12-02 15:21:31,653 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 [2018-12-02 15:21:31,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-02 15:21:31,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2018-12-02 15:21:31,653 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 6 letters. Loop has 3 letters. [2018-12-02 15:21:31,654 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 15:21:31,654 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 9 letters. Loop has 3 letters. [2018-12-02 15:21:31,654 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 15:21:31,654 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 6 letters. Loop has 6 letters. [2018-12-02 15:21:31,654 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 15:21:31,654 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 84 transitions. [2018-12-02 15:21:31,655 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2018-12-02 15:21:31,655 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 59 states and 80 transitions. [2018-12-02 15:21:31,655 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 55 [2018-12-02 15:21:31,655 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 56 [2018-12-02 15:21:31,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 80 transitions. [2018-12-02 15:21:31,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-02 15:21:31,656 INFO L705 BuchiCegarLoop]: Abstraction has 59 states and 80 transitions. [2018-12-02 15:21:31,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states and 80 transitions. [2018-12-02 15:21:31,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 37. [2018-12-02 15:21:31,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-02 15:21:31,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2018-12-02 15:21:31,657 INFO L728 BuchiCegarLoop]: Abstraction has 37 states and 51 transitions. [2018-12-02 15:21:31,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 15:21:31,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 15:21:31,658 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand 3 states. [2018-12-02 15:21:31,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 15:21:31,683 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2018-12-02 15:21:31,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 15:21:31,684 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 46 transitions. [2018-12-02 15:21:31,684 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2018-12-02 15:21:31,684 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 46 transitions. [2018-12-02 15:21:31,684 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2018-12-02 15:21:31,685 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2018-12-02 15:21:31,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 46 transitions. [2018-12-02 15:21:31,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-02 15:21:31,685 INFO L705 BuchiCegarLoop]: Abstraction has 35 states and 46 transitions. [2018-12-02 15:21:31,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 46 transitions. [2018-12-02 15:21:31,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2018-12-02 15:21:31,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-12-02 15:21:31,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2018-12-02 15:21:31,686 INFO L728 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2018-12-02 15:21:31,686 INFO L608 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2018-12-02 15:21:31,686 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-12-02 15:21:31,686 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 41 transitions. [2018-12-02 15:21:31,687 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2018-12-02 15:21:31,687 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-02 15:21:31,687 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-02 15:21:31,687 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-12-02 15:21:31,687 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-02 15:21:31,687 INFO L794 eck$LassoCheckResult]: Stem: 658#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 655#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 632#L69 base2flt_#res := base2flt_~__retres4~0; 633#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 652#L19-1 assume !(0 == base2flt_~m % 4294967296); 640#L25-1 assume base2flt_~m % 4294967296 < 16777216; 641#L37-3 [2018-12-02 15:21:31,687 INFO L796 eck$LassoCheckResult]: Loop: 641#L37-3 assume !false; 650#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 651#L37-2 assume base2flt_~m % 4294967296 < 16777216; 641#L37-3 [2018-12-02 15:21:31,688 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 15:21:31,688 INFO L82 PathProgramCache]: Analyzing trace with hash 921737673, now seen corresponding path program 1 times [2018-12-02 15:21:31,688 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 15:21:31,688 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 15:21:31,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 15:21:31,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 15:21:31,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 15:21:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 15:21:31,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 15:21:31,697 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 15:21:31,697 INFO L82 PathProgramCache]: Analyzing trace with hash 110419, now seen corresponding path program 1 times [2018-12-02 15:21:31,697 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 15:21:31,697 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 15:21:31,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 15:21:31,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 15:21:31,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 15:21:31,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 15:21:31,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 15:21:31,701 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 15:21:31,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1761173643, now seen corresponding path program 1 times [2018-12-02 15:21:31,701 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 15:21:31,701 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 15:21:31,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 15:21:31,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 15:21:31,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 15:21:31,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 15:21:31,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 15:21:31,722 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 15:21:31,722 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 15:21:31,722 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 15:21:31,723 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 15:21:31,723 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-02 15:21:31,723 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 15:21:31,723 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 15:21:31,723 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 15:21:31,723 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration3_Loop [2018-12-02 15:21:31,723 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 15:21:31,723 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 15:21:31,724 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 15:21:31,729 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 15:21:31,767 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 15:21:31,767 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0345d0a7-e172-4f09-b08e-83a7bd178695/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 [2018-12-02 15:21:31,768 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 15:21:31,768 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 15:21:31,776 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 15:21:31,776 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_0345d0a7-e172-4f09-b08e-83a7bd178695/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 [2018-12-02 15:21:31,791 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 15:21:31,791 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0345d0a7-e172-4f09-b08e-83a7bd178695/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 [2018-12-02 15:21:31,807 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-02 15:21:31,807 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 15:21:31,824 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-02 15:21:31,825 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 15:21:31,825 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 15:21:31,825 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 15:21:31,825 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 15:21:31,825 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-02 15:21:31,825 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 15:21:31,826 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 15:21:31,826 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 15:21:31,826 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration3_Loop [2018-12-02 15:21:31,826 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 15:21:31,826 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 15:21:31,826 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 15:21:31,834 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 15:21:31,876 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 15:21:31,876 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-02 15:21:31,877 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 [2018-12-02 15:21:31,877 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 15:21:31,877 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 15:21:31,878 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 15:21:31,878 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 15:21:31,878 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 15:21:31,879 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 15:21:31,879 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 15:21:31,880 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 15:21:31,881 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 [2018-12-02 15:21:31,881 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 15:21:31,881 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 15:21:31,881 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 15:21:31,882 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 15:21:31,882 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 15:21:31,882 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 15:21:31,882 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 15:21:31,884 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-02 15:21:31,885 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-02 15:21:31,885 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-02 15:21:31,885 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-02 15:21:31,885 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-02 15:21:31,885 INFO L518 LassoAnalysis]: Proved termination. [2018-12-02 15:21:31,886 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2018-12-02 15:21:31,886 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-02 15:21:31,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 15:21:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 15:21:31,900 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 15:21:31,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 15:21:31,903 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 15:21:31,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 15:21:31,918 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 [2018-12-02 15:21:31,919 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 41 transitions. cyclomatic complexity: 15 Second operand 4 states. [2018-12-02 15:21:31,925 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 41 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 59 states and 78 transitions. Complement of second has 5 states. [2018-12-02 15:21:31,925 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 [2018-12-02 15:21:31,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-02 15:21:31,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2018-12-02 15:21:31,925 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 6 letters. Loop has 3 letters. [2018-12-02 15:21:31,926 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 15:21:31,926 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 3 letters. [2018-12-02 15:21:31,926 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 15:21:31,926 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 6 letters. Loop has 6 letters. [2018-12-02 15:21:31,926 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 15:21:31,926 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 59 states and 78 transitions. [2018-12-02 15:21:31,927 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2018-12-02 15:21:31,927 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 59 states to 56 states and 74 transitions. [2018-12-02 15:21:31,927 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 50 [2018-12-02 15:21:31,927 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2018-12-02 15:21:31,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 74 transitions. [2018-12-02 15:21:31,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-02 15:21:31,928 INFO L705 BuchiCegarLoop]: Abstraction has 56 states and 74 transitions. [2018-12-02 15:21:31,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 74 transitions. [2018-12-02 15:21:31,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 34. [2018-12-02 15:21:31,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-02 15:21:31,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2018-12-02 15:21:31,929 INFO L728 BuchiCegarLoop]: Abstraction has 34 states and 45 transitions. [2018-12-02 15:21:31,929 INFO L608 BuchiCegarLoop]: Abstraction has 34 states and 45 transitions. [2018-12-02 15:21:31,929 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-12-02 15:21:31,929 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 45 transitions. [2018-12-02 15:21:31,929 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2018-12-02 15:21:31,929 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-02 15:21:31,930 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-02 15:21:31,930 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 15:21:31,930 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-02 15:21:31,930 INFO L794 eck$LassoCheckResult]: Stem: 797#ULTIMATE.startENTRY 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_~sa~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_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 794#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 770#L69 base2flt_#res := base2flt_~__retres4~0; 771#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;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; 791#L19-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 782#L69-1 base2flt_#res := base2flt_~__retres4~0; 783#L70-1 main_#t~ret5 := base2flt_#res;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;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; 786#L19-2 assume !(0 == base2flt_~m % 4294967296); 776#L25-2 assume !(base2flt_~m % 4294967296 < 16777216); 769#L47-8 [2018-12-02 15:21:31,930 INFO L796 eck$LassoCheckResult]: Loop: 769#L47-8 assume !false; 792#L48-2 assume base2flt_~m % 4294967296 >= 33554432; 767#L49-2 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 769#L47-8 [2018-12-02 15:21:31,930 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 15:21:31,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1760951196, now seen corresponding path program 1 times [2018-12-02 15:21:31,930 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 15:21:31,930 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 15:21:31,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 15:21:31,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 15:21:31,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 15:21:31,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 15:21:31,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 15:21:31,950 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 15:21:31,950 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 15:21:31,950 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-02 15:21:31,950 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 15:21:31,950 INFO L82 PathProgramCache]: Analyzing trace with hash 198737, now seen corresponding path program 1 times [2018-12-02 15:21:31,950 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 15:21:31,950 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 15:21:31,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 15:21:31,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 15:21:31,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 15:21:31,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 15:21:31,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 15:21:31,965 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 15:21:31,965 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 15:21:31,965 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 15:21:31,966 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 15:21:31,966 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-02 15:21:31,966 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 15:21:31,966 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 15:21:31,966 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 15:21:31,966 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration4_Loop [2018-12-02 15:21:31,966 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 15:21:31,966 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 15:21:31,967 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 15:21:31,970 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 15:21:32,018 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 15:21:32,018 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0345d0a7-e172-4f09-b08e-83a7bd178695/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 [2018-12-02 15:21:32,020 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 15:21:32,020 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0345d0a7-e172-4f09-b08e-83a7bd178695/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 [2018-12-02 15:21:32,037 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-02 15:21:32,037 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 15:21:32,053 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-02 15:21:32,054 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 15:21:32,054 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 15:21:32,054 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 15:21:32,054 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 15:21:32,054 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-02 15:21:32,054 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 15:21:32,054 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 15:21:32,054 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 15:21:32,054 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration4_Loop [2018-12-02 15:21:32,054 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 15:21:32,054 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 15:21:32,055 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 15:21:32,060 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 15:21:32,105 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 15:21:32,105 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-02 15:21:32,106 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 [2018-12-02 15:21:32,106 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 15:21:32,106 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 15:21:32,106 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 15:21:32,106 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 15:21:32,107 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 15:21:32,107 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 15:21:32,107 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 15:21:32,108 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-02 15:21:32,109 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-02 15:21:32,110 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-02 15:21:32,110 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-02 15:21:32,110 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-02 15:21:32,110 INFO L518 LassoAnalysis]: Proved termination. [2018-12-02 15:21:32,110 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-12-02 15:21:32,110 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-02 15:21:32,118 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 15:21:32,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 15:21:32,125 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 15:21:32,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 15:21:32,128 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 15:21:32,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 15:21:32,139 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 [2018-12-02 15:21:32,139 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 45 transitions. cyclomatic complexity: 16 Second operand 3 states. [2018-12-02 15:21:32,148 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 34 states and 45 transitions. cyclomatic complexity: 16. Second operand 3 states. Result 51 states and 65 transitions. Complement of second has 5 states. [2018-12-02 15:21:32,148 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 [2018-12-02 15:21:32,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-02 15:21:32,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2018-12-02 15:21:32,149 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 3 letters. [2018-12-02 15:21:32,149 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 15:21:32,149 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 3 letters. [2018-12-02 15:21:32,149 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 15:21:32,149 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 6 letters. [2018-12-02 15:21:32,149 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 15:21:32,149 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 65 transitions. [2018-12-02 15:21:32,150 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2018-12-02 15:21:32,150 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 48 states and 61 transitions. [2018-12-02 15:21:32,150 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2018-12-02 15:21:32,151 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2018-12-02 15:21:32,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 61 transitions. [2018-12-02 15:21:32,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-02 15:21:32,151 INFO L705 BuchiCegarLoop]: Abstraction has 48 states and 61 transitions. [2018-12-02 15:21:32,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 61 transitions. [2018-12-02 15:21:32,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 37. [2018-12-02 15:21:32,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-02 15:21:32,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2018-12-02 15:21:32,153 INFO L728 BuchiCegarLoop]: Abstraction has 37 states and 49 transitions. [2018-12-02 15:21:32,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 15:21:32,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 15:21:32,153 INFO L87 Difference]: Start difference. First operand 37 states and 49 transitions. Second operand 3 states. [2018-12-02 15:21:32,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 15:21:32,176 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2018-12-02 15:21:32,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 15:21:32,176 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 52 transitions. [2018-12-02 15:21:32,176 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2018-12-02 15:21:32,177 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 41 states and 52 transitions. [2018-12-02 15:21:32,177 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2018-12-02 15:21:32,177 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2018-12-02 15:21:32,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 52 transitions. [2018-12-02 15:21:32,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-02 15:21:32,177 INFO L705 BuchiCegarLoop]: Abstraction has 41 states and 52 transitions. [2018-12-02 15:21:32,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 52 transitions. [2018-12-02 15:21:32,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2018-12-02 15:21:32,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-02 15:21:32,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2018-12-02 15:21:32,178 INFO L728 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2018-12-02 15:21:32,178 INFO L608 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2018-12-02 15:21:32,178 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-12-02 15:21:32,178 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 37 states and 48 transitions. [2018-12-02 15:21:32,178 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2018-12-02 15:21:32,179 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-02 15:21:32,179 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-02 15:21:32,179 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 15:21:32,179 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-02 15:21:32,179 INFO L794 eck$LassoCheckResult]: Stem: 1018#ULTIMATE.startENTRY 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_~sa~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_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1015#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 989#L69 base2flt_#res := base2flt_~__retres4~0; 990#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;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; 1011#L19-1 assume !(0 == base2flt_~m % 4294967296); 998#L25-1 assume base2flt_~m % 4294967296 < 16777216; 999#L37-3 assume !false; 1008#L28-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 1002#L69-1 base2flt_#res := base2flt_~__retres4~0; 1003#L70-1 main_#t~ret5 := base2flt_#res;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;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; 1006#L19-2 assume !(0 == base2flt_~m % 4294967296); 995#L25-2 assume base2flt_~m % 4294967296 < 16777216; 997#L37-5 [2018-12-02 15:21:32,179 INFO L796 eck$LassoCheckResult]: Loop: 997#L37-5 assume !false; 1004#L28-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1005#L37-4 assume base2flt_~m % 4294967296 < 16777216; 997#L37-5 [2018-12-02 15:21:32,179 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 15:21:32,179 INFO L82 PathProgramCache]: Analyzing trace with hash -197167406, now seen corresponding path program 1 times [2018-12-02 15:21:32,179 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 15:21:32,179 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 15:21:32,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 15:21:32,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 15:21:32,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 15:21:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 15:21:32,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 15:21:32,194 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 15:21:32,194 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 15:21:32,194 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-02 15:21:32,195 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 15:21:32,195 INFO L82 PathProgramCache]: Analyzing trace with hash 172978, now seen corresponding path program 1 times [2018-12-02 15:21:32,195 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 15:21:32,195 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 15:21:32,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 15:21:32,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 15:21:32,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 15:21:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 15:21:32,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 15:21:32,212 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 15:21:32,212 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 15:21:32,212 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 15:21:32,212 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 15:21:32,212 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-02 15:21:32,212 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 15:21:32,212 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 15:21:32,212 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 15:21:32,212 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration5_Loop [2018-12-02 15:21:32,212 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 15:21:32,213 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 15:21:32,213 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 15:21:32,217 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 15:21:32,243 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 15:21:32,243 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0345d0a7-e172-4f09-b08e-83a7bd178695/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 [2018-12-02 15:21:32,245 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 15:21:32,245 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 15:21:32,256 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 15:21:32,256 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_0345d0a7-e172-4f09-b08e-83a7bd178695/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 [2018-12-02 15:21:32,277 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 15:21:32,277 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0345d0a7-e172-4f09-b08e-83a7bd178695/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 [2018-12-02 15:21:32,293 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-02 15:21:32,293 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 15:21:32,308 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-02 15:21:32,309 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 15:21:32,309 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 15:21:32,309 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 15:21:32,309 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 15:21:32,309 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-02 15:21:32,309 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 15:21:32,309 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 15:21:32,309 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 15:21:32,309 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration5_Loop [2018-12-02 15:21:32,309 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 15:21:32,309 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 15:21:32,310 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 15:21:32,314 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 15:21:32,356 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 15:21:32,356 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-02 15:21:32,356 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 [2018-12-02 15:21:32,356 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 15:21:32,356 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 15:21:32,356 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 15:21:32,357 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 15:21:32,357 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 15:21:32,357 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 15:21:32,357 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 15:21:32,358 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 15:21:32,358 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 [2018-12-02 15:21:32,358 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 15:21:32,358 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 15:21:32,359 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 15:21:32,359 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 15:21:32,359 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 15:21:32,359 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 15:21:32,359 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 15:21:32,360 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-02 15:21:32,361 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-02 15:21:32,361 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-02 15:21:32,361 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-02 15:21:32,361 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-02 15:21:32,361 INFO L518 LassoAnalysis]: Proved termination. [2018-12-02 15:21:32,361 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2018-12-02 15:21:32,362 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-02 15:21:32,371 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 15:21:32,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 15:21:32,377 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 15:21:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 15:21:32,379 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 15:21:32,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 15:21:32,388 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 [2018-12-02 15:21:32,388 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 48 transitions. cyclomatic complexity: 16 Second operand 4 states. [2018-12-02 15:21:32,394 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 37 states and 48 transitions. cyclomatic complexity: 16. Second operand 4 states. Result 55 states and 69 transitions. Complement of second has 5 states. [2018-12-02 15:21:32,394 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 [2018-12-02 15:21:32,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-02 15:21:32,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2018-12-02 15:21:32,394 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 3 letters. [2018-12-02 15:21:32,394 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 15:21:32,394 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 15 letters. Loop has 3 letters. [2018-12-02 15:21:32,395 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 15:21:32,395 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 6 letters. [2018-12-02 15:21:32,395 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 15:21:32,395 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 55 states and 69 transitions. [2018-12-02 15:21:32,395 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2018-12-02 15:21:32,395 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 55 states to 52 states and 65 transitions. [2018-12-02 15:21:32,395 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2018-12-02 15:21:32,396 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2018-12-02 15:21:32,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 65 transitions. [2018-12-02 15:21:32,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-02 15:21:32,396 INFO L705 BuchiCegarLoop]: Abstraction has 52 states and 65 transitions. [2018-12-02 15:21:32,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 65 transitions. [2018-12-02 15:21:32,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2018-12-02 15:21:32,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-02 15:21:32,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 52 transitions. [2018-12-02 15:21:32,397 INFO L728 BuchiCegarLoop]: Abstraction has 40 states and 52 transitions. [2018-12-02 15:21:32,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 15:21:32,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 15:21:32,397 INFO L87 Difference]: Start difference. First operand 40 states and 52 transitions. Second operand 4 states. [2018-12-02 15:21:32,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 15:21:32,424 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2018-12-02 15:21:32,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 15:21:32,424 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 55 transitions. [2018-12-02 15:21:32,424 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-12-02 15:21:32,425 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 43 states and 54 transitions. [2018-12-02 15:21:32,425 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2018-12-02 15:21:32,425 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2018-12-02 15:21:32,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 54 transitions. [2018-12-02 15:21:32,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-02 15:21:32,425 INFO L705 BuchiCegarLoop]: Abstraction has 43 states and 54 transitions. [2018-12-02 15:21:32,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 54 transitions. [2018-12-02 15:21:32,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2018-12-02 15:21:32,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-02 15:21:32,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2018-12-02 15:21:32,426 INFO L728 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2018-12-02 15:21:32,426 INFO L608 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2018-12-02 15:21:32,426 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-12-02 15:21:32,426 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 51 transitions. [2018-12-02 15:21:32,426 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-12-02 15:21:32,427 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-02 15:21:32,427 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-02 15:21:32,427 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 15:21:32,427 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-02 15:21:32,427 INFO L794 eck$LassoCheckResult]: Stem: 1266#ULTIMATE.startENTRY 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_~sa~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_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1261#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1234#L69 base2flt_#res := base2flt_~__retres4~0; 1235#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;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; 1257#L19-1 assume !(0 == base2flt_~m % 4294967296); 1243#L25-1 assume base2flt_~m % 4294967296 < 16777216; 1244#L37-3 assume !false; 1255#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1256#L37-2 assume !(base2flt_~m % 4294967296 < 16777216); 1262#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; 1247#L69-1 base2flt_#res := base2flt_~__retres4~0; 1248#L70-1 main_#t~ret5 := base2flt_#res;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;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; 1252#L19-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1231#L69-2 base2flt_#res := base2flt_~__retres4~0; 1245#L70-2 main_#t~ret6 := base2flt_#res;main_~a~0 := main_#t~ret6;havoc main_#t~ret6;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; 1253#L19-3 assume !(0 == base2flt_~m % 4294967296); 1238#L25-3 assume !(base2flt_~m % 4294967296 < 16777216); 1239#L47-11 [2018-12-02 15:21:32,427 INFO L796 eck$LassoCheckResult]: Loop: 1239#L47-11 assume !false; 1268#L48-3 assume base2flt_~m % 4294967296 >= 33554432; 1246#L49-3 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 1239#L47-11 [2018-12-02 15:21:32,427 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 15:21:32,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1360904017, now seen corresponding path program 1 times [2018-12-02 15:21:32,427 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 15:21:32,428 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 15:21:32,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 15:21:32,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 15:21:32,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 15:21:32,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 15:21:32,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 15:21:32,457 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 15:21:32,457 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 15:21:32,458 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-02 15:21:32,458 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 15:21:32,458 INFO L82 PathProgramCache]: Analyzing trace with hash 261296, now seen corresponding path program 1 times [2018-12-02 15:21:32,459 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 15:21:32,459 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 15:21:32,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 15:21:32,460 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 15:21:32,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 15:21:32,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 15:21:32,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 15:21:32,476 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 15:21:32,476 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 15:21:32,476 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 15:21:32,476 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 15:21:32,476 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-02 15:21:32,477 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 15:21:32,477 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 15:21:32,477 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 15:21:32,477 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration6_Loop [2018-12-02 15:21:32,477 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 15:21:32,477 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 15:21:32,477 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 15:21:32,480 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 15:21:32,521 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 15:21:32,521 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0345d0a7-e172-4f09-b08e-83a7bd178695/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 15:21:32,524 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 15:21:32,524 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0345d0a7-e172-4f09-b08e-83a7bd178695/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 [2018-12-02 15:21:32,541 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-02 15:21:32,541 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 15:21:32,557 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-02 15:21:32,558 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 15:21:32,559 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 15:21:32,559 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 15:21:32,559 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 15:21:32,559 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-02 15:21:32,559 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 15:21:32,559 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 15:21:32,559 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 15:21:32,559 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration6_Loop [2018-12-02 15:21:32,559 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 15:21:32,559 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 15:21:32,560 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 15:21:32,563 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 15:21:32,603 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 15:21:32,603 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-02 15:21:32,604 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 [2018-12-02 15:21:32,604 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 15:21:32,604 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 15:21:32,604 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 15:21:32,604 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 15:21:32,604 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 15:21:32,605 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 15:21:32,605 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 15:21:32,606 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-02 15:21:32,607 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-02 15:21:32,607 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-02 15:21:32,607 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-02 15:21:32,607 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-02 15:21:32,607 INFO L518 LassoAnalysis]: Proved termination. [2018-12-02 15:21:32,607 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-12-02 15:21:32,607 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-02 15:21:32,614 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 15:21:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 15:21:32,623 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 15:21:32,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 15:21:32,626 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 15:21:32,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 15:21:32,626 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 [2018-12-02 15:21:32,626 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 51 transitions. cyclomatic complexity: 16 Second operand 3 states. [2018-12-02 15:21:32,630 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 51 transitions. cyclomatic complexity: 16. Second operand 3 states. Result 43 states and 55 transitions. Complement of second has 4 states. [2018-12-02 15:21:32,630 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 [2018-12-02 15:21:32,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-02 15:21:32,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2018-12-02 15:21:32,630 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 17 letters. Loop has 3 letters. [2018-12-02 15:21:32,631 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 15:21:32,631 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 20 letters. Loop has 3 letters. [2018-12-02 15:21:32,631 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 15:21:32,631 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 17 letters. Loop has 6 letters. [2018-12-02 15:21:32,631 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 15:21:32,631 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 55 transitions. [2018-12-02 15:21:32,632 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-02 15:21:32,632 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 37 states and 47 transitions. [2018-12-02 15:21:32,632 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2018-12-02 15:21:32,632 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2018-12-02 15:21:32,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 47 transitions. [2018-12-02 15:21:32,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-02 15:21:32,633 INFO L705 BuchiCegarLoop]: Abstraction has 37 states and 47 transitions. [2018-12-02 15:21:32,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 47 transitions. [2018-12-02 15:21:32,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-12-02 15:21:32,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-02 15:21:32,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2018-12-02 15:21:32,634 INFO L728 BuchiCegarLoop]: Abstraction has 37 states and 47 transitions. [2018-12-02 15:21:32,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 15:21:32,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-02 15:21:32,634 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand 4 states. [2018-12-02 15:21:32,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 15:21:32,670 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2018-12-02 15:21:32,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 15:21:32,670 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 56 transitions. [2018-12-02 15:21:32,670 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-02 15:21:32,671 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 45 states and 56 transitions. [2018-12-02 15:21:32,671 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2018-12-02 15:21:32,671 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2018-12-02 15:21:32,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 56 transitions. [2018-12-02 15:21:32,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-02 15:21:32,671 INFO L705 BuchiCegarLoop]: Abstraction has 45 states and 56 transitions. [2018-12-02 15:21:32,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 56 transitions. [2018-12-02 15:21:32,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2018-12-02 15:21:32,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-02 15:21:32,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2018-12-02 15:21:32,672 INFO L728 BuchiCegarLoop]: Abstraction has 39 states and 50 transitions. [2018-12-02 15:21:32,672 INFO L608 BuchiCegarLoop]: Abstraction has 39 states and 50 transitions. [2018-12-02 15:21:32,672 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-12-02 15:21:32,672 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 50 transitions. [2018-12-02 15:21:32,672 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-02 15:21:32,672 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-02 15:21:32,672 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-02 15:21:32,673 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 15:21:32,673 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-02 15:21:32,673 INFO L794 eck$LassoCheckResult]: Stem: 1506#ULTIMATE.startENTRY 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_~sa~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_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1503#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1478#L69 base2flt_#res := base2flt_~__retres4~0; 1479#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;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; 1499#L19-1 assume !(0 == base2flt_~m % 4294967296); 1486#L25-1 assume base2flt_~m % 4294967296 < 16777216; 1487#L37-3 assume !false; 1497#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1498#L37-2 assume base2flt_~m % 4294967296 < 16777216; 1509#L37-3 assume !false; 1496#L28-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 1489#L69-1 base2flt_#res := base2flt_~__retres4~0; 1490#L70-1 main_#t~ret5 := base2flt_#res;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;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; 1494#L19-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1475#L69-2 base2flt_#res := base2flt_~__retres4~0; 1488#L70-2 main_#t~ret6 := base2flt_#res;main_~a~0 := main_#t~ret6;havoc main_#t~ret6;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; 1495#L19-3 assume !(0 == base2flt_~m % 4294967296); 1482#L25-3 assume base2flt_~m % 4294967296 < 16777216; 1480#L37-7 [2018-12-02 15:21:32,673 INFO L796 eck$LassoCheckResult]: Loop: 1480#L37-7 assume !false; 1481#L28-3 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1505#L37-6 assume base2flt_~m % 4294967296 < 16777216; 1480#L37-7 [2018-12-02 15:21:32,673 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 15:21:32,673 INFO L82 PathProgramCache]: Analyzing trace with hash -377438794, now seen corresponding path program 1 times [2018-12-02 15:21:32,673 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 15:21:32,673 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 15:21:32,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 15:21:32,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 15:21:32,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 15:21:32,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 15:21:32,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 15:21:32,688 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 15:21:32,689 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0345d0a7-e172-4f09-b08e-83a7bd178695/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 15:21:32,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 15:21:32,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 15:21:32,702 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 15:21:32,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 15:21:32,718 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 15:21:32,719 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2018-12-02 15:21:32,719 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-02 15:21:32,719 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 15:21:32,719 INFO L82 PathProgramCache]: Analyzing trace with hash 235537, now seen corresponding path program 1 times [2018-12-02 15:21:32,719 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 15:21:32,719 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 15:21:32,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 15:21:32,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 15:21:32,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 15:21:32,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 15:21:32,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 15:21:32,731 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 15:21:32,731 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 15:21:32,731 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 15:21:32,731 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 15:21:32,731 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-02 15:21:32,731 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 15:21:32,731 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 15:21:32,731 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 15:21:32,731 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration7_Loop [2018-12-02 15:21:32,731 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 15:21:32,731 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 15:21:32,732 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 15:21:32,735 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 15:21:32,766 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 15:21:32,766 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0345d0a7-e172-4f09-b08e-83a7bd178695/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 15:21:32,768 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 15:21:32,768 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 15:21:32,774 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 15:21:32,774 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_0345d0a7-e172-4f09-b08e-83a7bd178695/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 [2018-12-02 15:21:32,789 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 15:21:32,789 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0345d0a7-e172-4f09-b08e-83a7bd178695/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 [2018-12-02 15:21:32,806 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-02 15:21:32,806 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 15:21:32,821 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-02 15:21:32,823 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 15:21:32,823 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 15:21:32,823 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 15:21:32,823 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 15:21:32,823 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-02 15:21:32,823 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 15:21:32,823 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 15:21:32,823 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 15:21:32,823 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration7_Loop [2018-12-02 15:21:32,823 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 15:21:32,823 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 15:21:32,824 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 15:21:32,827 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 15:21:32,868 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 15:21:32,868 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-02 15:21:32,868 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 [2018-12-02 15:21:32,869 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 15:21:32,869 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 15:21:32,869 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 15:21:32,869 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 15:21:32,869 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 15:21:32,869 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 15:21:32,869 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 15:21:32,870 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 15:21:32,870 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 [2018-12-02 15:21:32,870 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 15:21:32,870 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 15:21:32,871 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 15:21:32,871 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 15:21:32,871 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 15:21:32,871 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 15:21:32,871 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 15:21:32,872 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-02 15:21:32,873 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-02 15:21:32,873 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-02 15:21:32,873 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-02 15:21:32,873 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-02 15:21:32,873 INFO L518 LassoAnalysis]: Proved termination. [2018-12-02 15:21:32,873 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2018-12-02 15:21:32,873 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-02 15:21:32,880 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 15:21:32,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 15:21:32,888 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 15:21:32,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 15:21:32,890 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 15:21:32,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 15:21:32,897 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 [2018-12-02 15:21:32,897 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 50 transitions. cyclomatic complexity: 15 Second operand 4 states. [2018-12-02 15:21:32,900 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 50 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 43 states and 54 transitions. Complement of second has 4 states. [2018-12-02 15:21:32,900 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 [2018-12-02 15:21:32,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-02 15:21:32,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2018-12-02 15:21:32,901 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 18 letters. Loop has 3 letters. [2018-12-02 15:21:32,901 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 15:21:32,901 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 21 letters. Loop has 3 letters. [2018-12-02 15:21:32,901 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 15:21:32,901 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 18 letters. Loop has 6 letters. [2018-12-02 15:21:32,902 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 15:21:32,902 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 54 transitions. [2018-12-02 15:21:32,902 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-02 15:21:32,902 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 0 states and 0 transitions. [2018-12-02 15:21:32,902 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-02 15:21:32,902 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-02 15:21:32,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-02 15:21:32,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-02 15:21:32,902 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 15:21:32,902 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 15:21:32,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 15:21:32,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-02 15:21:32,903 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2018-12-02 15:21:32,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 15:21:32,903 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-12-02 15:21:32,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 15:21:32,903 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-12-02 15:21:32,903 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-02 15:21:32,903 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-12-02 15:21:32,903 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-02 15:21:32,903 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-02 15:21:32,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-02 15:21:32,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-02 15:21:32,903 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 15:21:32,903 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 15:21:32,903 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 15:21:32,903 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-12-02 15:21:32,904 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-12-02 15:21:32,904 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-02 15:21:32,904 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-12-02 15:21:32,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 02.12 03:21:32 BoogieIcfgContainer [2018-12-02 15:21:32,908 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-12-02 15:21:32,908 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 15:21:32,908 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 15:21:32,908 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 15:21:32,909 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:21:30" (3/4) ... [2018-12-02 15:21:32,912 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-02 15:21:32,912 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 15:21:32,913 INFO L168 Benchmark]: Toolchain (without parser) took 2725.66 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 226.0 MB). Free memory was 963.4 MB in the beginning and 1.0 GB in the end (delta: -42.5 MB). Peak memory consumption was 183.5 MB. Max. memory is 11.5 GB. [2018-12-02 15:21:32,914 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 15:21:32,914 INFO L168 Benchmark]: CACSL2BoogieTranslator took 167.05 ms. Allocated memory is still 1.0 GB. Free memory was 963.4 MB in the beginning and 947.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-12-02 15:21:32,915 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -198.6 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-12-02 15:21:32,915 INFO L168 Benchmark]: Boogie Preprocessor took 21.19 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-12-02 15:21:32,916 INFO L168 Benchmark]: RCFGBuilder took 241.83 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: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 11.5 GB. [2018-12-02 15:21:32,916 INFO L168 Benchmark]: BuchiAutomizer took 2229.63 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 75.5 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 105.2 MB). Peak memory consumption was 180.7 MB. Max. memory is 11.5 GB. [2018-12-02 15:21:32,916 INFO L168 Benchmark]: Witness Printer took 4.04 ms. Allocated memory is still 1.3 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 15:21:32,919 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 167.05 ms. Allocated memory is still 1.0 GB. Free memory was 963.4 MB in the beginning and 947.3 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 59.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -198.6 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.19 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 241.83 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: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2229.63 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 75.5 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 105.2 MB). Peak memory consumption was 180.7 MB. Max. memory is 11.5 GB. * Witness Printer took 4.04 ms. Allocated memory is still 1.3 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 13 terminating modules (6 trivial, 7 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * e + 253 and consists of 4 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. 6 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.1s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 1.6s. 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, 95 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 40 states and ocurred in iteration 5. Nontrivial modules had stage [7, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 542 SDtfs, 373 SDslu, 116 SDs, 0 SdLazy, 207 SolverSat, 13 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...