./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/recursive/McCarthy91_false-unreach-call_true-no-overflow_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_8a526289-3371-46bb-b1a9-827dc0206d7f/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_8a526289-3371-46bb-b1a9-827dc0206d7f/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_8a526289-3371-46bb-b1a9-827dc0206d7f/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_8a526289-3371-46bb-b1a9-827dc0206d7f/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive/McCarthy91_false-unreach-call_true-no-overflow_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_8a526289-3371-46bb-b1a9-827dc0206d7f/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_8a526289-3371-46bb-b1a9-827dc0206d7f/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 37028c56b7915050ee6a79b5e737b9e44bf7c3db ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-09 23:52:03,523 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-09 23:52:03,524 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-09 23:52:03,533 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-09 23:52:03,533 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-09 23:52:03,534 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-09 23:52:03,535 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-09 23:52:03,536 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-09 23:52:03,537 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-09 23:52:03,538 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-09 23:52:03,539 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-09 23:52:03,539 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-09 23:52:03,540 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-09 23:52:03,541 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-09 23:52:03,541 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-09 23:52:03,542 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-09 23:52:03,542 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-09 23:52:03,544 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-09 23:52:03,545 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-09 23:52:03,546 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-09 23:52:03,547 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-09 23:52:03,548 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-09 23:52:03,549 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-09 23:52:03,549 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-09 23:52:03,549 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-09 23:52:03,550 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-09 23:52:03,551 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-09 23:52:03,551 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-09 23:52:03,552 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-09 23:52:03,553 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-09 23:52:03,553 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-09 23:52:03,553 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-09 23:52:03,554 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-09 23:52:03,554 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-09 23:52:03,554 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-09 23:52:03,555 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-09 23:52:03,555 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_8a526289-3371-46bb-b1a9-827dc0206d7f/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-11-09 23:52:03,566 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-09 23:52:03,566 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-09 23:52:03,567 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-09 23:52:03,567 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-09 23:52:03,567 INFO L133 SettingsManager]: * Use SBE=true [2018-11-09 23:52:03,567 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-09 23:52:03,567 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-09 23:52:03,568 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-09 23:52:03,568 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-09 23:52:03,568 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-09 23:52:03,568 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-09 23:52:03,568 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-09 23:52:03,568 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-09 23:52:03,568 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-09 23:52:03,568 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-09 23:52:03,568 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-09 23:52:03,569 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-09 23:52:03,569 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-09 23:52:03,569 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-09 23:52:03,569 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-09 23:52:03,569 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-09 23:52:03,569 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-09 23:52:03,569 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-09 23:52:03,569 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-09 23:52:03,570 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-09 23:52:03,570 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-09 23:52:03,570 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-09 23:52:03,570 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-09 23:52:03,570 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-09 23:52:03,570 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-09 23:52:03,571 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-09 23:52:03,571 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_8a526289-3371-46bb-b1a9-827dc0206d7f/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 -> 37028c56b7915050ee6a79b5e737b9e44bf7c3db [2018-11-09 23:52:03,592 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-09 23:52:03,600 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-09 23:52:03,602 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-09 23:52:03,603 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-09 23:52:03,603 INFO L276 PluginConnector]: CDTParser initialized [2018-11-09 23:52:03,604 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_8a526289-3371-46bb-b1a9-827dc0206d7f/bin-2019/uautomizer/../../sv-benchmarks/c/recursive/McCarthy91_false-unreach-call_true-no-overflow_true-termination.c [2018-11-09 23:52:03,639 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8a526289-3371-46bb-b1a9-827dc0206d7f/bin-2019/uautomizer/data/2e263c7fb/e00be676a0bb45d7a17705b581867c93/FLAG03de4c61f [2018-11-09 23:52:04,033 INFO L298 CDTParser]: Found 1 translation units. [2018-11-09 23:52:04,034 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_8a526289-3371-46bb-b1a9-827dc0206d7f/sv-benchmarks/c/recursive/McCarthy91_false-unreach-call_true-no-overflow_true-termination.c [2018-11-09 23:52:04,038 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8a526289-3371-46bb-b1a9-827dc0206d7f/bin-2019/uautomizer/data/2e263c7fb/e00be676a0bb45d7a17705b581867c93/FLAG03de4c61f [2018-11-09 23:52:04,047 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_8a526289-3371-46bb-b1a9-827dc0206d7f/bin-2019/uautomizer/data/2e263c7fb/e00be676a0bb45d7a17705b581867c93 [2018-11-09 23:52:04,049 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-09 23:52:04,049 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-09 23:52:04,050 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-09 23:52:04,050 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-09 23:52:04,052 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-09 23:52:04,052 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 11:52:04" (1/1) ... [2018-11-09 23:52:04,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eeb45d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:52:04, skipping insertion in model container [2018-11-09 23:52:04,054 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 11:52:04" (1/1) ... [2018-11-09 23:52:04,059 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-09 23:52:04,068 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-09 23:52:04,154 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-09 23:52:04,156 INFO L189 MainTranslator]: Completed pre-run [2018-11-09 23:52:04,165 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-09 23:52:04,172 INFO L193 MainTranslator]: Completed translation [2018-11-09 23:52:04,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:52:04 WrapperNode [2018-11-09 23:52:04,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-09 23:52:04,173 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-09 23:52:04,173 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-09 23:52:04,173 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-09 23:52:04,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:52:04" (1/1) ... [2018-11-09 23:52:04,181 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:52:04" (1/1) ... [2018-11-09 23:52:04,190 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-09 23:52:04,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-09 23:52:04,190 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-09 23:52:04,190 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-09 23:52:04,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:52:04" (1/1) ... [2018-11-09 23:52:04,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:52:04" (1/1) ... [2018-11-09 23:52:04,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:52:04" (1/1) ... [2018-11-09 23:52:04,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:52:04" (1/1) ... [2018-11-09 23:52:04,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:52:04" (1/1) ... [2018-11-09 23:52:04,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:52:04" (1/1) ... [2018-11-09 23:52:04,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:52:04" (1/1) ... [2018-11-09 23:52:04,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-09 23:52:04,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-09 23:52:04,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-09 23:52:04,200 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-09 23:52:04,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:52:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a526289-3371-46bb-b1a9-827dc0206d7f/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:52:04,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-09 23:52:04,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-09 23:52:04,290 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2018-11-09 23:52:04,290 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2018-11-09 23:52:04,377 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-09 23:52:04,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 11:52:04 BoogieIcfgContainer [2018-11-09 23:52:04,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-09 23:52:04,378 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-09 23:52:04,378 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-09 23:52:04,380 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-09 23:52:04,381 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-09 23:52:04,381 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 09.11 11:52:04" (1/3) ... [2018-11-09 23:52:04,382 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@439af0bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.11 11:52:04, skipping insertion in model container [2018-11-09 23:52:04,382 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-09 23:52:04,382 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:52:04" (2/3) ... [2018-11-09 23:52:04,382 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@439af0bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.11 11:52:04, skipping insertion in model container [2018-11-09 23:52:04,382 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-09 23:52:04,383 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 11:52:04" (3/3) ... [2018-11-09 23:52:04,384 INFO L375 chiAutomizerObserver]: Analyzing ICFG McCarthy91_false-unreach-call_true-no-overflow_true-termination.c [2018-11-09 23:52:04,427 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-09 23:52:04,428 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-09 23:52:04,428 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-09 23:52:04,428 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-09 23:52:04,428 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-09 23:52:04,428 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-09 23:52:04,428 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-09 23:52:04,428 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-09 23:52:04,428 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-09 23:52:04,438 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2018-11-09 23:52:04,458 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-09 23:52:04,458 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-09 23:52:04,458 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-09 23:52:04,465 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-09 23:52:04,465 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-09 23:52:04,465 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-09 23:52:04,466 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2018-11-09 23:52:04,467 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-09 23:52:04,467 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-09 23:52:04,467 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-09 23:52:04,467 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-09 23:52:04,468 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-09 23:52:04,473 INFO L793 eck$LassoCheckResult]: Stem: 13#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 12#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 3#L26true call main_#t~ret3 := f91(main_~x~0);< 17#f91ENTRYtrue [2018-11-09 23:52:04,474 INFO L795 eck$LassoCheckResult]: Loop: 17#f91ENTRYtrue ~x := #in~x; 10#L16true assume !(~x > 100); 7#L19true call #t~ret0 := f91(~x + 11);< 17#f91ENTRYtrue [2018-11-09 23:52:04,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:52:04,477 INFO L82 PathProgramCache]: Analyzing trace with hash 29877, now seen corresponding path program 1 times [2018-11-09 23:52:04,479 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 23:52:04,479 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 23:52:04,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:52:04,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-09 23:52:04,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:52:04,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:52:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:52:04,533 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:52:04,533 INFO L82 PathProgramCache]: Analyzing trace with hash 44821, now seen corresponding path program 1 times [2018-11-09 23:52:04,534 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 23:52:04,534 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 23:52:04,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:52:04,535 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-09 23:52:04,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:52:04,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:52:04,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:52:04,546 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:52:04,546 INFO L82 PathProgramCache]: Analyzing trace with hash 890080737, now seen corresponding path program 1 times [2018-11-09 23:52:04,546 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 23:52:04,546 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 23:52:04,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:52:04,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-09 23:52:04,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:52:04,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:52:04,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:52:04,625 INFO L214 LassoAnalysis]: Preferences: [2018-11-09 23:52:04,626 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-09 23:52:04,626 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-09 23:52:04,626 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-09 23:52:04,626 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-09 23:52:04,627 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:52:04,627 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-09 23:52:04,627 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-09 23:52:04,627 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_false-unreach-call_true-no-overflow_true-termination.c_Iteration1_Loop [2018-11-09 23:52:04,627 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-09 23:52:04,627 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-09 23:52:04,645 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:52:04,650 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:52:04,662 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:52:04,688 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:52:04,691 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:52:04,729 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-09 23:52:04,730 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a526289-3371-46bb-b1a9-827dc0206d7f/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:52:04,733 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:52:04,733 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:52:04,738 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-09 23:52:04,738 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_~x=0} Honda state: {f91_~x=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a526289-3371-46bb-b1a9-827dc0206d7f/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:52:04,754 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:52:04,754 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:52:04,756 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-09 23:52:04,756 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a526289-3371-46bb-b1a9-827dc0206d7f/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:52:04,772 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:52:04,772 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a526289-3371-46bb-b1a9-827dc0206d7f/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:52:04,789 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-09 23:52:04,789 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:52:04,809 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-09 23:52:04,810 INFO L214 LassoAnalysis]: Preferences: [2018-11-09 23:52:04,810 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-09 23:52:04,810 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-09 23:52:04,810 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-09 23:52:04,810 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-09 23:52:04,811 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:52:04,811 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-09 23:52:04,811 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-09 23:52:04,811 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_false-unreach-call_true-no-overflow_true-termination.c_Iteration1_Loop [2018-11-09 23:52:04,811 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-09 23:52:04,811 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-09 23:52:04,812 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:52:04,813 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:52:04,815 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:52:04,821 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:52:04,831 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:52:04,861 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-09 23:52:04,865 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-09 23:52:04,866 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-09 23:52:04,867 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 23:52:04,867 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 23:52:04,868 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 23:52:04,868 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 23:52:04,868 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 23:52:04,869 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 23:52:04,870 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 23:52:04,873 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-09 23:52:04,874 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-09 23:52:04,874 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 23:52:04,874 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 23:52:04,875 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 23:52:04,875 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 23:52:04,875 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 23:52:04,875 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 23:52:04,876 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 23:52:04,877 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-09 23:52:04,877 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 [2018-11-09 23:52:04,878 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 23:52:04,878 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 23:52:04,878 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 23:52:04,878 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 23:52:04,878 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 23:52:04,879 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 23:52:04,879 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 23:52:04,884 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-09 23:52:04,888 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-09 23:52:04,889 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-09 23:52:04,890 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-09 23:52:04,890 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-09 23:52:04,890 INFO L517 LassoAnalysis]: Proved termination. [2018-11-09 23:52:04,891 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -2*f91_#in~x + 211 Supporting invariants [] [2018-11-09 23:52:04,892 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-09 23:52:04,930 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:52:04,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:52:04,942 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 23:52:04,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:52:04,955 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 23:52:04,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 23:52:04,993 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-09 23:52:04,994 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states. Second operand 4 states. [2018-11-09 23:52:05,108 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states.. Second operand 4 states. Result 34 states and 42 transitions. Complement of second has 12 states. [2018-11-09 23:52:05,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-09 23:52:05,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-09 23:52:05,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2018-11-09 23:52:05,113 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 3 letters. [2018-11-09 23:52:05,114 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 23:52:05,114 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-09 23:52:05,114 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 23:52:05,115 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 6 letters. [2018-11-09 23:52:05,115 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 23:52:05,116 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 42 transitions. [2018-11-09 23:52:05,118 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-09 23:52:05,123 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 19 states and 25 transitions. [2018-11-09 23:52:05,124 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2018-11-09 23:52:05,124 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2018-11-09 23:52:05,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 25 transitions. [2018-11-09 23:52:05,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-09 23:52:05,126 INFO L705 BuchiCegarLoop]: Abstraction has 19 states and 25 transitions. [2018-11-09 23:52:05,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 25 transitions. [2018-11-09 23:52:05,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2018-11-09 23:52:05,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-09 23:52:05,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2018-11-09 23:52:05,146 INFO L728 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2018-11-09 23:52:05,146 INFO L608 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2018-11-09 23:52:05,146 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-09 23:52:05,146 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 21 transitions. [2018-11-09 23:52:05,147 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-09 23:52:05,147 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-09 23:52:05,147 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-09 23:52:05,148 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-09 23:52:05,148 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2018-11-09 23:52:05,148 INFO L793 eck$LassoCheckResult]: Stem: 111#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 103#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 104#L26 call main_#t~ret3 := f91(main_~x~0);< 110#f91ENTRY ~x := #in~x; 116#L16 assume !(~x > 100); 107#L19 call #t~ret0 := f91(~x + 11);< 113#f91ENTRY ~x := #in~x; 117#L16 assume ~x > 100;#res := ~x - 10; 114#f91FINAL assume true; 115#f91EXIT >#27#return; 108#L19-1 [2018-11-09 23:52:05,149 INFO L795 eck$LassoCheckResult]: Loop: 108#L19-1 call #t~ret1 := f91(#t~ret0);< 112#f91ENTRY ~x := #in~x; 119#L16 assume !(~x > 100); 106#L19 call #t~ret0 := f91(~x + 11);< 112#f91ENTRY ~x := #in~x; 119#L16 assume ~x > 100;#res := ~x - 10; 109#f91FINAL assume true; 118#f91EXIT >#27#return; 108#L19-1 [2018-11-09 23:52:05,149 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:52:05,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1243034264, now seen corresponding path program 1 times [2018-11-09 23:52:05,149 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 23:52:05,149 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 23:52:05,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:52:05,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-09 23:52:05,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:52:05,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:52:05,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:52:05,158 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:52:05,159 INFO L82 PathProgramCache]: Analyzing trace with hash 742678306, now seen corresponding path program 1 times [2018-11-09 23:52:05,159 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 23:52:05,159 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 23:52:05,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:52:05,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-09 23:52:05,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:52:05,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:52:05,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:52:05,165 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:52:05,165 INFO L82 PathProgramCache]: Analyzing trace with hash -291973751, now seen corresponding path program 1 times [2018-11-09 23:52:05,165 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 23:52:05,165 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 23:52:05,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:52:05,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-09 23:52:05,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:52:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:52:05,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:52:05,268 INFO L214 LassoAnalysis]: Preferences: [2018-11-09 23:52:05,269 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-09 23:52:05,269 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-09 23:52:05,269 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-09 23:52:05,269 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-09 23:52:05,269 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:52:05,269 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-09 23:52:05,269 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-09 23:52:05,269 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_false-unreach-call_true-no-overflow_true-termination.c_Iteration2_Loop [2018-11-09 23:52:05,269 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-09 23:52:05,269 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-09 23:52:05,270 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:52:05,276 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:52:05,279 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:52:05,305 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-09 23:52:05,305 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a526289-3371-46bb-b1a9-827dc0206d7f/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:52:05,307 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:52:05,307 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a526289-3371-46bb-b1a9-827dc0206d7f/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:52:05,331 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-09 23:52:05,331 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:52:17,357 INFO L448 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2018-11-09 23:52:17,359 INFO L214 LassoAnalysis]: Preferences: [2018-11-09 23:52:17,359 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-09 23:52:17,359 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-09 23:52:17,359 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-09 23:52:17,359 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-09 23:52:17,359 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:52:17,359 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-09 23:52:17,359 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-09 23:52:17,359 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_false-unreach-call_true-no-overflow_true-termination.c_Iteration2_Loop [2018-11-09 23:52:17,360 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-09 23:52:17,360 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-09 23:52:17,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:52:17,366 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:52:17,367 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:52:17,404 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-09 23:52:17,404 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-09 23:52:17,404 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-09 23:52:17,405 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 23:52:17,405 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 23:52:17,405 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 23:52:17,406 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 23:52:17,406 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 23:52:17,406 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 23:52:17,407 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 23:52:17,414 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-09 23:52:17,419 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-09 23:52:17,419 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-09 23:52:17,419 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-09 23:52:17,420 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-09 23:52:17,420 INFO L517 LassoAnalysis]: Proved termination. [2018-11-09 23:52:17,420 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#t~ret0) = -2*f91_#t~ret0 + 201 Supporting invariants [] [2018-11-09 23:52:17,420 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-09 23:52:17,429 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:52:17,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:52:17,449 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 23:52:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:52:17,473 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 23:52:17,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 23:52:17,545 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2018-11-09 23:52:17,546 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 21 transitions. cyclomatic complexity: 6 Second operand 9 states. [2018-11-09 23:52:17,713 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 21 transitions. cyclomatic complexity: 6. Second operand 9 states. Result 51 states and 73 transitions. Complement of second has 32 states. [2018-11-09 23:52:17,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2018-11-09 23:52:17,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-09 23:52:17,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 17 transitions. [2018-11-09 23:52:17,716 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 10 letters. Loop has 8 letters. [2018-11-09 23:52:17,716 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 23:52:17,717 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 18 letters. Loop has 8 letters. [2018-11-09 23:52:17,717 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 23:52:17,717 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 10 letters. Loop has 16 letters. [2018-11-09 23:52:17,717 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 23:52:17,718 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 73 transitions. [2018-11-09 23:52:17,721 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2018-11-09 23:52:17,724 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 42 states and 62 transitions. [2018-11-09 23:52:17,724 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2018-11-09 23:52:17,725 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2018-11-09 23:52:17,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 62 transitions. [2018-11-09 23:52:17,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-09 23:52:17,725 INFO L705 BuchiCegarLoop]: Abstraction has 42 states and 62 transitions. [2018-11-09 23:52:17,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 62 transitions. [2018-11-09 23:52:17,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2018-11-09 23:52:17,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-09 23:52:17,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 51 transitions. [2018-11-09 23:52:17,730 INFO L728 BuchiCegarLoop]: Abstraction has 36 states and 51 transitions. [2018-11-09 23:52:17,730 INFO L608 BuchiCegarLoop]: Abstraction has 36 states and 51 transitions. [2018-11-09 23:52:17,730 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-09 23:52:17,730 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 51 transitions. [2018-11-09 23:52:17,731 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2018-11-09 23:52:17,731 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-09 23:52:17,731 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-09 23:52:17,732 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-09 23:52:17,732 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-09 23:52:17,732 INFO L793 eck$LassoCheckResult]: Stem: 302#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 289#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 290#L26 call main_#t~ret3 := f91(main_~x~0);< 291#f91ENTRY ~x := #in~x; 316#L16 assume !(~x > 100); 299#L19 call #t~ret0 := f91(~x + 11);< 308#f91ENTRY ~x := #in~x; 314#L16 assume ~x > 100;#res := ~x - 10; 321#f91FINAL assume true; 320#f91EXIT >#27#return; 294#L19-1 call #t~ret1 := f91(#t~ret0);< 305#f91ENTRY ~x := #in~x; 324#L16 assume !(~x > 100); 306#L19 [2018-11-09 23:52:17,732 INFO L795 eck$LassoCheckResult]: Loop: 306#L19 call #t~ret0 := f91(~x + 11);< 307#f91ENTRY ~x := #in~x; 312#L16 assume !(~x > 100); 306#L19 [2018-11-09 23:52:17,732 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:52:17,732 INFO L82 PathProgramCache]: Analyzing trace with hash -25705320, now seen corresponding path program 2 times [2018-11-09 23:52:17,732 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 23:52:17,732 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 23:52:17,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:52:17,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-09 23:52:17,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:52:17,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:52:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:52:17,742 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:52:17,742 INFO L82 PathProgramCache]: Analyzing trace with hash 55261, now seen corresponding path program 2 times [2018-11-09 23:52:17,743 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 23:52:17,743 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 23:52:17,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:52:17,743 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-09 23:52:17,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:52:17,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:52:17,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:52:17,747 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:52:17,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1282983962, now seen corresponding path program 3 times [2018-11-09 23:52:17,747 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 23:52:17,748 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 23:52:17,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:52:17,748 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-09 23:52:17,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:52:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:52:17,809 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-09 23:52:17,810 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-09 23:52:17,811 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-09 23:52:17,828 INFO L214 LassoAnalysis]: Preferences: [2018-11-09 23:52:17,828 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-09 23:52:17,828 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-09 23:52:17,828 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-09 23:52:17,828 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-09 23:52:17,828 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:52:17,828 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-09 23:52:17,828 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-09 23:52:17,829 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_false-unreach-call_true-no-overflow_true-termination.c_Iteration3_Loop [2018-11-09 23:52:17,829 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-09 23:52:17,829 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-09 23:52:17,829 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:52:17,830 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:52:17,831 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:52:17,832 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:52:17,853 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-09 23:52:17,853 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a526289-3371-46bb-b1a9-827dc0206d7f/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:52:17,866 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:52:17,867 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:52:17,869 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-09 23:52:17,869 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret0=0} Honda state: {f91_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a526289-3371-46bb-b1a9-827dc0206d7f/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:52:17,885 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:52:17,885 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:52:17,887 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-09 23:52:17,887 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret1=0} Honda state: {f91_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a526289-3371-46bb-b1a9-827dc0206d7f/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:52:17,903 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:52:17,903 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:52:17,904 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-09 23:52:17,905 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a526289-3371-46bb-b1a9-827dc0206d7f/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:52:17,920 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:52:17,921 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a526289-3371-46bb-b1a9-827dc0206d7f/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:52:17,946 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-09 23:52:17,946 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:52:29,966 INFO L448 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2018-11-09 23:52:29,968 INFO L214 LassoAnalysis]: Preferences: [2018-11-09 23:52:29,969 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-09 23:52:29,969 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-09 23:52:29,969 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-09 23:52:29,969 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-09 23:52:29,969 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:52:29,969 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-09 23:52:29,969 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-09 23:52:29,969 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_false-unreach-call_true-no-overflow_true-termination.c_Iteration3_Loop [2018-11-09 23:52:29,969 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-09 23:52:29,969 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-09 23:52:29,970 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:52:29,971 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:52:29,972 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:52:29,973 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:52:30,003 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-09 23:52:30,004 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-09 23:52:30,004 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-09 23:52:30,005 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 23:52:30,005 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 23:52:30,005 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 23:52:30,005 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 23:52:30,005 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 23:52:30,005 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 23:52:30,005 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 23:52:30,007 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-09 23:52:30,007 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-09 23:52:30,007 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 23:52:30,007 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 23:52:30,007 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 23:52:30,007 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 23:52:30,008 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 23:52:30,008 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 23:52:30,008 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 23:52:30,009 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-09 23:52:30,009 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-09 23:52:30,009 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 23:52:30,009 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 23:52:30,010 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 23:52:30,010 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 23:52:30,010 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 23:52:30,010 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 23:52:30,010 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 23:52:30,011 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-09 23:52:30,011 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-09 23:52:30,012 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 23:52:30,012 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 23:52:30,012 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 23:52:30,012 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 23:52:30,012 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 23:52:30,013 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 23:52:30,013 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 23:52:30,016 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-09 23:52:30,019 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-09 23:52:30,019 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-09 23:52:30,019 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-09 23:52:30,019 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-09 23:52:30,019 INFO L517 LassoAnalysis]: Proved termination. [2018-11-09 23:52:30,019 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_~x) = -2*f91_~x + 189 Supporting invariants [] [2018-11-09 23:52:30,020 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-09 23:52:30,036 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:52:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:52:30,049 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 23:52:30,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:52:30,064 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 23:52:30,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 23:52:30,083 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2018-11-09 23:52:30,083 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19 Second operand 5 states. [2018-11-09 23:52:30,125 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19. Second operand 5 states. Result 43 states and 59 transitions. Complement of second has 13 states. [2018-11-09 23:52:30,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-09 23:52:30,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-09 23:52:30,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 11 transitions. [2018-11-09 23:52:30,126 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 11 transitions. Stem has 13 letters. Loop has 3 letters. [2018-11-09 23:52:30,126 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 23:52:30,126 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-09 23:52:30,134 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:52:30,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:52:30,148 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 23:52:30,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:52:30,163 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 23:52:30,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 23:52:30,184 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2018-11-09 23:52:30,184 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19 Second operand 5 states. [2018-11-09 23:52:30,222 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19. Second operand 5 states. Result 43 states and 59 transitions. Complement of second has 13 states. [2018-11-09 23:52:30,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-09 23:52:30,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-09 23:52:30,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 11 transitions. [2018-11-09 23:52:30,223 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 11 transitions. Stem has 13 letters. Loop has 3 letters. [2018-11-09 23:52:30,223 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 23:52:30,223 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-09 23:52:30,230 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:52:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:52:30,242 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 23:52:30,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:52:30,259 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 23:52:30,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 23:52:30,292 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2018-11-09 23:52:30,293 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19 Second operand 5 states. [2018-11-09 23:52:30,336 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19. Second operand 5 states. Result 71 states and 100 transitions. Complement of second has 16 states. [2018-11-09 23:52:30,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-09 23:52:30,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-09 23:52:30,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 19 transitions. [2018-11-09 23:52:30,337 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 13 letters. Loop has 3 letters. [2018-11-09 23:52:30,337 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 23:52:30,337 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 16 letters. Loop has 3 letters. [2018-11-09 23:52:30,337 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 23:52:30,337 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 13 letters. Loop has 6 letters. [2018-11-09 23:52:30,337 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 23:52:30,338 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 71 states and 100 transitions. [2018-11-09 23:52:30,339 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-09 23:52:30,340 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 71 states to 48 states and 74 transitions. [2018-11-09 23:52:30,340 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2018-11-09 23:52:30,340 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2018-11-09 23:52:30,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 74 transitions. [2018-11-09 23:52:30,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-09 23:52:30,341 INFO L705 BuchiCegarLoop]: Abstraction has 48 states and 74 transitions. [2018-11-09 23:52:30,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 74 transitions. [2018-11-09 23:52:30,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2018-11-09 23:52:30,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-09 23:52:30,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 60 transitions. [2018-11-09 23:52:30,344 INFO L728 BuchiCegarLoop]: Abstraction has 42 states and 60 transitions. [2018-11-09 23:52:30,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-09 23:52:30,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-11-09 23:52:30,346 INFO L87 Difference]: Start difference. First operand 42 states and 60 transitions. Second operand 8 states. [2018-11-09 23:52:30,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-09 23:52:30,404 INFO L93 Difference]: Finished difference Result 63 states and 82 transitions. [2018-11-09 23:52:30,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-09 23:52:30,404 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 82 transitions. [2018-11-09 23:52:30,406 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2018-11-09 23:52:30,408 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 58 states and 75 transitions. [2018-11-09 23:52:30,408 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2018-11-09 23:52:30,408 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2018-11-09 23:52:30,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 75 transitions. [2018-11-09 23:52:30,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-09 23:52:30,408 INFO L705 BuchiCegarLoop]: Abstraction has 58 states and 75 transitions. [2018-11-09 23:52:30,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states and 75 transitions. [2018-11-09 23:52:30,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2018-11-09 23:52:30,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-11-09 23:52:30,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2018-11-09 23:52:30,413 INFO L728 BuchiCegarLoop]: Abstraction has 57 states and 74 transitions. [2018-11-09 23:52:30,413 INFO L608 BuchiCegarLoop]: Abstraction has 57 states and 74 transitions. [2018-11-09 23:52:30,413 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-09 23:52:30,413 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 57 states and 74 transitions. [2018-11-09 23:52:30,413 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2018-11-09 23:52:30,414 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-09 23:52:30,414 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-09 23:52:30,414 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2018-11-09 23:52:30,414 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 2, 2, 2, 2, 2, 1, 1] [2018-11-09 23:52:30,414 INFO L793 eck$LassoCheckResult]: Stem: 840#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 831#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 832#L26 call main_#t~ret3 := f91(main_~x~0);< 839#f91ENTRY ~x := #in~x; 862#L16 assume !(~x > 100); 847#L19 call #t~ret0 := f91(~x + 11);< 848#f91ENTRY ~x := #in~x; 870#L16 assume !(~x > 100); 866#L19 call #t~ret0 := f91(~x + 11);< 868#f91ENTRY ~x := #in~x; 871#L16 assume ~x > 100;#res := ~x - 10; 869#f91FINAL assume true; 867#f91EXIT >#27#return; 837#L19-1 call #t~ret1 := f91(#t~ret0);< 844#f91ENTRY ~x := #in~x; 855#L16 assume ~x > 100;#res := ~x - 10; 861#f91FINAL assume true; 886#f91EXIT >#29#return; 860#L19-2 #res := #t~ret1;havoc #t~ret0;havoc #t~ret1; 884#f91FINAL assume true; 883#f91EXIT >#27#return; 841#L19-1 call #t~ret1 := f91(#t~ret0);< 842#f91ENTRY [2018-11-09 23:52:30,415 INFO L795 eck$LassoCheckResult]: Loop: 842#f91ENTRY ~x := #in~x; 876#L16 assume !(~x > 100); 857#L19 call #t~ret0 := f91(~x + 11);< 856#f91ENTRY ~x := #in~x; 859#L16 assume !(~x > 100); 858#L19 call #t~ret0 := f91(~x + 11);< 872#f91ENTRY ~x := #in~x; 882#L16 assume ~x > 100;#res := ~x - 10; 880#f91FINAL assume true; 878#f91EXIT >#27#return; 834#L19-1 call #t~ret1 := f91(#t~ret0);< 875#f91ENTRY ~x := #in~x; 873#L16 assume ~x > 100;#res := ~x - 10; 874#f91FINAL assume true; 885#f91EXIT >#29#return; 860#L19-2 #res := #t~ret1;havoc #t~ret0;havoc #t~ret1; 884#f91FINAL assume true; 883#f91EXIT >#27#return; 850#L19-1 call #t~ret1 := f91(#t~ret0);< 842#f91ENTRY [2018-11-09 23:52:30,415 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:52:30,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1708035509, now seen corresponding path program 1 times [2018-11-09 23:52:30,415 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 23:52:30,415 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 23:52:30,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:52:30,415 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-09 23:52:30,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:52:30,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:52:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:52:30,424 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:52:30,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1732488063, now seen corresponding path program 1 times [2018-11-09 23:52:30,424 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 23:52:30,425 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 23:52:30,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:52:30,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-09 23:52:30,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:52:30,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:52:30,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:52:30,435 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:52:30,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1682902795, now seen corresponding path program 2 times [2018-11-09 23:52:30,435 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 23:52:30,435 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 23:52:30,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:52:30,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-09 23:52:30,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:52:30,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:52:30,492 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-11-09 23:52:30,492 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-09 23:52:30,492 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a526289-3371-46bb-b1a9-827dc0206d7f/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-09 23:52:30,503 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-09 23:52:30,511 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-09 23:52:30,511 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-09 23:52:30,512 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 23:52:30,519 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-11-09 23:52:30,539 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-09 23:52:30,539 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-11-09 23:52:30,652 INFO L214 LassoAnalysis]: Preferences: [2018-11-09 23:52:30,652 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-09 23:52:30,652 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-09 23:52:30,652 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-09 23:52:30,652 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-09 23:52:30,652 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:52:30,652 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-09 23:52:30,652 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-09 23:52:30,653 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_false-unreach-call_true-no-overflow_true-termination.c_Iteration4_Loop [2018-11-09 23:52:30,653 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-09 23:52:30,653 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-09 23:52:30,653 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:52:30,655 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:52:30,657 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:52:30,658 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:52:30,659 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:52:30,681 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-09 23:52:30,681 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a526289-3371-46bb-b1a9-827dc0206d7f/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:52:30,689 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:52:30,689 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:52:30,694 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-09 23:52:30,694 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret1=0} Honda state: {f91_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a526289-3371-46bb-b1a9-827dc0206d7f/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:52:30,715 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:52:30,715 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:52:30,717 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-09 23:52:30,717 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_~x=0} Honda state: {f91_~x=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a526289-3371-46bb-b1a9-827dc0206d7f/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 [2018-11-09 23:52:30,732 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:52:30,732 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:52:30,734 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-09 23:52:30,734 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a526289-3371-46bb-b1a9-827dc0206d7f/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:52:30,750 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:52:30,750 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:52:30,752 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-09 23:52:30,752 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret0=0} Honda state: {f91_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a526289-3371-46bb-b1a9-827dc0206d7f/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:52:30,768 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:52:30,768 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a526289-3371-46bb-b1a9-827dc0206d7f/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 [2018-11-09 23:52:30,786 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-09 23:52:30,786 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:52:31,459 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-09 23:52:31,460 INFO L214 LassoAnalysis]: Preferences: [2018-11-09 23:52:31,460 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-09 23:52:31,460 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-09 23:52:31,460 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-09 23:52:31,461 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-09 23:52:31,461 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:52:31,461 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-09 23:52:31,461 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-09 23:52:31,461 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_false-unreach-call_true-no-overflow_true-termination.c_Iteration4_Loop [2018-11-09 23:52:31,461 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-09 23:52:31,461 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-09 23:52:31,462 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:52:31,466 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:52:31,467 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:52:31,467 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:52:31,468 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:52:31,484 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-09 23:52:31,484 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-09 23:52:31,484 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-09 23:52:31,485 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 23:52:31,485 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 23:52:31,485 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 23:52:31,485 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 23:52:31,485 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 23:52:31,485 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 23:52:31,486 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 23:52:31,486 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-09 23:52:31,487 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-09 23:52:31,487 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 23:52:31,487 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 23:52:31,487 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 23:52:31,488 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 23:52:31,488 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 23:52:31,488 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 23:52:31,488 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 23:52:31,489 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-09 23:52:31,489 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-09 23:52:31,490 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 23:52:31,490 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 23:52:31,490 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 23:52:31,490 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 23:52:31,490 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 23:52:31,490 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 23:52:31,491 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 23:52:31,491 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-09 23:52:31,492 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-09 23:52:31,492 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 23:52:31,492 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 23:52:31,492 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 23:52:31,492 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 23:52:31,493 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 23:52:31,493 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 23:52:31,493 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 23:52:31,494 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-09 23:52:31,494 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-09 23:52:31,494 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 23:52:31,495 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 23:52:31,495 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 23:52:31,495 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 23:52:31,495 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 23:52:31,495 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 23:52:31,496 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 23:52:31,498 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-09 23:52:31,500 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-09 23:52:31,500 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-09 23:52:31,500 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-09 23:52:31,500 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-09 23:52:31,500 INFO L517 LassoAnalysis]: Proved termination. [2018-11-09 23:52:31,500 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -1*f91_#in~x + 90 Supporting invariants [] [2018-11-09 23:52:31,501 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-09 23:52:31,524 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:52:31,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:52:31,547 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 23:52:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:52:31,571 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 23:52:31,659 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-09 23:52:31,659 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2018-11-09 23:52:31,659 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21 Second operand 12 states. [2018-11-09 23:52:31,929 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21. Second operand 12 states. Result 125 states and 150 transitions. Complement of second has 47 states. [2018-11-09 23:52:31,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 2 stem states 11 non-accepting loop states 1 accepting loop states [2018-11-09 23:52:31,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-09 23:52:31,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 34 transitions. [2018-11-09 23:52:31,930 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 34 transitions. Stem has 22 letters. Loop has 19 letters. [2018-11-09 23:52:31,931 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 23:52:31,931 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-09 23:52:31,937 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:52:31,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:52:31,956 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 23:52:31,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:52:31,999 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 23:52:32,077 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-09 23:52:32,077 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 10 loop predicates [2018-11-09 23:52:32,077 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21 Second operand 12 states. [2018-11-09 23:52:32,316 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21. Second operand 12 states. Result 125 states and 150 transitions. Complement of second has 47 states. [2018-11-09 23:52:32,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 2 stem states 11 non-accepting loop states 1 accepting loop states [2018-11-09 23:52:32,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-09 23:52:32,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 34 transitions. [2018-11-09 23:52:32,317 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 34 transitions. Stem has 22 letters. Loop has 19 letters. [2018-11-09 23:52:32,317 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 23:52:32,317 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-09 23:52:32,324 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:52:32,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:52:32,340 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 23:52:32,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:52:32,367 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 23:52:32,459 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-09 23:52:32,459 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2018-11-09 23:52:32,459 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21 Second operand 12 states. [2018-11-09 23:52:32,970 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21. Second operand 12 states. Result 431 states and 531 transitions. Complement of second has 216 states. [2018-11-09 23:52:32,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 20 states 2 stem states 17 non-accepting loop states 1 accepting loop states [2018-11-09 23:52:32,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-09 23:52:32,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 49 transitions. [2018-11-09 23:52:32,972 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 49 transitions. Stem has 22 letters. Loop has 19 letters. [2018-11-09 23:52:32,973 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 23:52:32,973 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 49 transitions. Stem has 41 letters. Loop has 19 letters. [2018-11-09 23:52:32,973 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 23:52:32,973 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 49 transitions. Stem has 22 letters. Loop has 38 letters. [2018-11-09 23:52:32,975 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 23:52:32,975 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 431 states and 531 transitions. [2018-11-09 23:52:32,982 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 29 [2018-11-09 23:52:32,986 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 431 states to 203 states and 269 transitions. [2018-11-09 23:52:32,986 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 95 [2018-11-09 23:52:32,986 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2018-11-09 23:52:32,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 203 states and 269 transitions. [2018-11-09 23:52:32,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-09 23:52:32,987 INFO L705 BuchiCegarLoop]: Abstraction has 203 states and 269 transitions. [2018-11-09 23:52:32,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states and 269 transitions. [2018-11-09 23:52:32,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 157. [2018-11-09 23:52:32,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-11-09 23:52:32,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 198 transitions. [2018-11-09 23:52:32,998 INFO L728 BuchiCegarLoop]: Abstraction has 157 states and 198 transitions. [2018-11-09 23:52:32,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-09 23:52:32,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-09 23:52:32,998 INFO L87 Difference]: Start difference. First operand 157 states and 198 transitions. Second operand 9 states. [2018-11-09 23:52:33,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-09 23:52:33,119 INFO L93 Difference]: Finished difference Result 159 states and 188 transitions. [2018-11-09 23:52:33,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-09 23:52:33,120 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 159 states and 188 transitions. [2018-11-09 23:52:33,121 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-09 23:52:33,123 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 159 states to 104 states and 123 transitions. [2018-11-09 23:52:33,123 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 76 [2018-11-09 23:52:33,124 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 76 [2018-11-09 23:52:33,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 123 transitions. [2018-11-09 23:52:33,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-09 23:52:33,124 INFO L705 BuchiCegarLoop]: Abstraction has 104 states and 123 transitions. [2018-11-09 23:52:33,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states and 123 transitions. [2018-11-09 23:52:33,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 100. [2018-11-09 23:52:33,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-11-09 23:52:33,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 119 transitions. [2018-11-09 23:52:33,131 INFO L728 BuchiCegarLoop]: Abstraction has 100 states and 119 transitions. [2018-11-09 23:52:33,131 INFO L608 BuchiCegarLoop]: Abstraction has 100 states and 119 transitions. [2018-11-09 23:52:33,131 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-09 23:52:33,132 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 100 states and 119 transitions. [2018-11-09 23:52:33,132 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-09 23:52:33,132 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-09 23:52:33,132 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-09 23:52:33,133 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [7, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1] [2018-11-09 23:52:33,133 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2018-11-09 23:52:33,133 INFO L793 eck$LassoCheckResult]: Stem: 2841#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 2832#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 2833#L26 call main_#t~ret3 := f91(main_~x~0);< 2840#f91ENTRY ~x := #in~x; 2896#L16 assume !(~x > 100); 2881#L19 call #t~ret0 := f91(~x + 11);< 2883#f91ENTRY ~x := #in~x; 2894#L16 assume !(~x > 100); 2882#L19 call #t~ret0 := f91(~x + 11);< 2892#f91ENTRY ~x := #in~x; 2895#L16 assume ~x > 100;#res := ~x - 10; 2893#f91FINAL assume true; 2891#f91EXIT >#27#return; 2887#L19-1 call #t~ret1 := f91(#t~ret0);< 2889#f91ENTRY ~x := #in~x; 2908#L16 assume ~x > 100;#res := ~x - 10; 2897#f91FINAL assume true; 2886#f91EXIT >#29#return; 2885#L19-2 #res := #t~ret1;havoc #t~ret0;havoc #t~ret1; 2884#f91FINAL assume true; 2880#f91EXIT >#27#return; 2874#L19-1 call #t~ret1 := f91(#t~ret0);< 2879#f91ENTRY ~x := #in~x; 2877#L16 assume !(~x > 100); 2843#L19 call #t~ret0 := f91(~x + 11);< 2850#f91ENTRY ~x := #in~x; 2858#L16 assume !(~x > 100); 2844#L19 call #t~ret0 := f91(~x + 11);< 2851#f91ENTRY ~x := #in~x; 2931#L16 assume ~x > 100;#res := ~x - 10; 2930#f91FINAL assume true; 2859#f91EXIT >#27#return; 2842#L19-1 [2018-11-09 23:52:33,133 INFO L795 eck$LassoCheckResult]: Loop: 2842#L19-1 call #t~ret1 := f91(#t~ret0);< 2845#f91ENTRY ~x := #in~x; 2873#L16 assume !(~x > 100); 2848#L19 call #t~ret0 := f91(~x + 11);< 2849#f91ENTRY ~x := #in~x; 2857#L16 assume ~x > 100;#res := ~x - 10; 2863#f91FINAL assume true; 2929#f91EXIT >#27#return; 2842#L19-1 [2018-11-09 23:52:33,134 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:52:33,138 INFO L82 PathProgramCache]: Analyzing trace with hash -517290798, now seen corresponding path program 3 times [2018-11-09 23:52:33,138 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 23:52:33,138 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 23:52:33,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:52:33,139 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-09 23:52:33,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:52:33,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:52:33,212 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 28 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-11-09 23:52:33,212 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-09 23:52:33,212 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a526289-3371-46bb-b1a9-827dc0206d7f/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-09 23:52:33,218 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-09 23:52:33,224 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-11-09 23:52:33,225 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-09 23:52:33,226 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 23:52:33,230 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-09 23:52:33,248 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-09 23:52:33,248 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 9 [2018-11-09 23:52:33,249 INFO L798 eck$LassoCheckResult]: stem already infeasible [2018-11-09 23:52:33,249 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:52:33,249 INFO L82 PathProgramCache]: Analyzing trace with hash 742678306, now seen corresponding path program 2 times [2018-11-09 23:52:33,249 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 23:52:33,249 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 23:52:33,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:52:33,250 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-09 23:52:33,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:52:33,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:52:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:52:33,295 INFO L214 LassoAnalysis]: Preferences: [2018-11-09 23:52:33,295 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-09 23:52:33,295 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-09 23:52:33,295 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-09 23:52:33,295 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-09 23:52:33,296 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:52:33,296 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-09 23:52:33,296 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-09 23:52:33,296 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_false-unreach-call_true-no-overflow_true-termination.c_Iteration5_Loop [2018-11-09 23:52:33,296 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-09 23:52:33,296 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-09 23:52:33,297 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:52:33,298 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:52:33,299 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:52:33,319 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-09 23:52:33,319 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a526289-3371-46bb-b1a9-827dc0206d7f/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:52:33,322 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:52:33,322 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:52:33,326 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-09 23:52:33,326 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a526289-3371-46bb-b1a9-827dc0206d7f/bin-2019/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:52:33,342 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:52:33,342 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:52:33,344 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-09 23:52:33,344 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret1=0} Honda state: {f91_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a526289-3371-46bb-b1a9-827dc0206d7f/bin-2019/uautomizer/z3 Starting monitored process 23 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:52:33,360 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-09 23:52:33,360 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a526289-3371-46bb-b1a9-827dc0206d7f/bin-2019/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:52:33,384 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-09 23:52:33,384 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-09 23:52:45,408 INFO L448 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2018-11-09 23:52:45,411 INFO L214 LassoAnalysis]: Preferences: [2018-11-09 23:52:45,411 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-09 23:52:45,411 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-09 23:52:45,411 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-09 23:52:45,411 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-09 23:52:45,411 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-09 23:52:45,411 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-09 23:52:45,411 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-09 23:52:45,411 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_false-unreach-call_true-no-overflow_true-termination.c_Iteration5_Loop [2018-11-09 23:52:45,411 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-09 23:52:45,411 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-09 23:52:45,412 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:52:45,418 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:52:45,419 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-09 23:52:45,435 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-09 23:52:45,436 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-09 23:52:45,436 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-09 23:52:45,436 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-09 23:52:45,436 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-09 23:52:45,436 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-09 23:52:45,437 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-09 23:52:45,437 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-09 23:52:45,437 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-09 23:52:45,437 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-09 23:52:45,440 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-09 23:52:45,441 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-09 23:52:45,441 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-09 23:52:45,442 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-09 23:52:45,442 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-09 23:52:45,442 INFO L517 LassoAnalysis]: Proved termination. [2018-11-09 23:52:45,442 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#t~ret0) = -2*f91_#t~ret0 + 201 Supporting invariants [] [2018-11-09 23:52:45,442 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-09 23:52:45,451 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:52:45,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:52:45,472 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 23:52:45,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:52:45,493 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 23:52:45,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 23:52:45,544 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2018-11-09 23:52:45,544 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 100 states and 119 transitions. cyclomatic complexity: 24 Second operand 9 states. [2018-11-09 23:52:45,649 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 100 states and 119 transitions. cyclomatic complexity: 24. Second operand 9 states. Result 139 states and 161 transitions. Complement of second has 24 states. [2018-11-09 23:52:45,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2018-11-09 23:52:45,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-09 23:52:45,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 17 transitions. [2018-11-09 23:52:45,650 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 32 letters. Loop has 8 letters. [2018-11-09 23:52:45,650 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 23:52:45,650 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-09 23:52:45,656 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:52:45,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:52:45,677 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 23:52:45,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:52:45,696 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 23:52:45,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 23:52:45,746 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 7 loop predicates [2018-11-09 23:52:45,746 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 100 states and 119 transitions. cyclomatic complexity: 24 Second operand 9 states. [2018-11-09 23:52:45,854 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 100 states and 119 transitions. cyclomatic complexity: 24. Second operand 9 states. Result 139 states and 161 transitions. Complement of second has 24 states. [2018-11-09 23:52:45,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2018-11-09 23:52:45,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-09 23:52:45,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 17 transitions. [2018-11-09 23:52:45,856 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 32 letters. Loop has 8 letters. [2018-11-09 23:52:45,856 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 23:52:45,856 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-09 23:52:45,865 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:52:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:52:45,886 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 23:52:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:52:45,906 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 23:52:45,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 23:52:45,956 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2018-11-09 23:52:45,956 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 100 states and 119 transitions. cyclomatic complexity: 24 Second operand 9 states. [2018-11-09 23:52:46,091 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 100 states and 119 transitions. cyclomatic complexity: 24. Second operand 9 states. Result 181 states and 211 transitions. Complement of second has 27 states. [2018-11-09 23:52:46,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2018-11-09 23:52:46,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-09 23:52:46,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 21 transitions. [2018-11-09 23:52:46,092 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 21 transitions. Stem has 32 letters. Loop has 8 letters. [2018-11-09 23:52:46,092 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 23:52:46,092 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 21 transitions. Stem has 40 letters. Loop has 8 letters. [2018-11-09 23:52:46,093 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 23:52:46,093 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 21 transitions. Stem has 32 letters. Loop has 16 letters. [2018-11-09 23:52:46,093 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-09 23:52:46,093 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 181 states and 211 transitions. [2018-11-09 23:52:46,095 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-09 23:52:46,095 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 181 states to 0 states and 0 transitions. [2018-11-09 23:52:46,095 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-09 23:52:46,095 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-09 23:52:46,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-09 23:52:46,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-09 23:52:46,096 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-09 23:52:46,096 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-09 23:52:46,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-09 23:52:46,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-11-09 23:52:46,096 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 9 states. [2018-11-09 23:52:46,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-09 23:52:46,096 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-11-09 23:52:46,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-09 23:52:46,097 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-11-09 23:52:46,097 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-09 23:52:46,097 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-11-09 23:52:46,097 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-09 23:52:46,097 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-09 23:52:46,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-09 23:52:46,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-09 23:52:46,097 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-09 23:52:46,097 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-09 23:52:46,097 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-09 23:52:46,097 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-09 23:52:46,098 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-09 23:52:46,098 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-09 23:52:46,098 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-09 23:52:46,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 09.11 11:52:46 BoogieIcfgContainer [2018-11-09 23:52:46,102 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-09 23:52:46,102 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-09 23:52:46,102 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-09 23:52:46,102 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-09 23:52:46,103 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 11:52:04" (3/4) ... [2018-11-09 23:52:46,105 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-09 23:52:46,105 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-09 23:52:46,105 INFO L168 Benchmark]: Toolchain (without parser) took 42056.45 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 286.3 MB). Free memory was 959.2 MB in the beginning and 832.6 MB in the end (delta: 126.6 MB). Peak memory consumption was 412.8 MB. Max. memory is 11.5 GB. [2018-11-09 23:52:46,106 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-09 23:52:46,106 INFO L168 Benchmark]: CACSL2BoogieTranslator took 123.15 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-09 23:52:46,107 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.97 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-09 23:52:46,107 INFO L168 Benchmark]: Boogie Preprocessor took 9.28 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-09 23:52:46,108 INFO L168 Benchmark]: RCFGBuilder took 177.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 172.5 MB). Free memory was 945.7 MB in the beginning and 1.2 GB in the end (delta: -215.9 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. [2018-11-09 23:52:46,108 INFO L168 Benchmark]: BuchiAutomizer took 41723.84 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 113.8 MB). Free memory was 1.2 GB in the beginning and 832.6 MB in the end (delta: 329.0 MB). Peak memory consumption was 442.8 MB. Max. memory is 11.5 GB. [2018-11-09 23:52:46,109 INFO L168 Benchmark]: Witness Printer took 2.74 ms. Allocated memory is still 1.3 GB. Free memory is still 832.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-09 23:52:46,111 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 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 123.15 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 16.97 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 9.28 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 177.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 172.5 MB). Free memory was 945.7 MB in the beginning and 1.2 GB in the end (delta: -215.9 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 41723.84 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 113.8 MB). Free memory was 1.2 GB in the beginning and 832.6 MB in the end (delta: 329.0 MB). Peak memory consumption was 442.8 MB. Max. memory is 11.5 GB. * Witness Printer took 2.74 ms. Allocated memory is still 1.3 GB. Free memory is still 832.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 8 terminating modules (3 trivial, 2 deterministic, 3 nondeterministic). One deterministic module has affine ranking function -2 * \old(x) + 211 and consists of 4 locations. One deterministic module has affine ranking function -2 * aux-f91(x+11)-aux + 201 and consists of 8 locations. One nondeterministic module has affine ranking function -2 * x + 189 and consists of 6 locations. One nondeterministic module has affine ranking function -1 * \old(x) + 90 and consists of 20 locations. One nondeterministic module has affine ranking function -2 * aux-f91(x+11)-aux + 201 and consists of 8 locations. 3 modules have a trivial ranking function, the largest among these consists of 9 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 41.6s and 6 iterations. TraceHistogramMax:7. Analysis of lassos took 38.3s. Construction of modules took 0.4s. Büchi inclusion checks took 2.6s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 65 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 100 states and ocurred in iteration 4. Nontrivial modules had stage [2, 0, 3, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 12/24 HoareTripleCheckerStatistics: 168 SDtfs, 283 SDslu, 203 SDs, 0 SdLazy, 796 SolverSat, 223 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf96 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq166 hnf92 smp100 dnf100 smp100 tf109 neg100 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 8ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 11 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 3 LassoNonterminationAnalysisTime: 36.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...