./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-invgen/nest-if3_true-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_e5380e9f-18ec-459d-8f8d-7b92ecbce6a8/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e5380e9f-18ec-459d-8f8d-7b92ecbce6a8/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e5380e9f-18ec-459d-8f8d-7b92ecbce6a8/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e5380e9f-18ec-459d-8f8d-7b92ecbce6a8/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-invgen/nest-if3_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_e5380e9f-18ec-459d-8f8d-7b92ecbce6a8/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e5380e9f-18ec-459d-8f8d-7b92ecbce6a8/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 67bb0790f696b3c18eb630bed2fc34fee971c82b ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 10:02:24,545 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 10:02:24,546 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 10:02:24,552 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 10:02:24,552 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 10:02:24,553 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 10:02:24,553 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 10:02:24,555 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 10:02:24,555 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 10:02:24,556 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 10:02:24,556 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 10:02:24,557 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 10:02:24,557 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 10:02:24,558 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 10:02:24,558 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 10:02:24,559 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 10:02:24,559 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 10:02:24,561 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 10:02:24,562 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 10:02:24,562 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 10:02:24,563 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 10:02:24,564 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 10:02:24,565 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 10:02:24,565 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 10:02:24,565 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 10:02:24,566 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 10:02:24,566 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 10:02:24,567 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 10:02:24,567 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 10:02:24,568 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 10:02:24,568 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 10:02:24,568 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 10:02:24,568 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 10:02:24,568 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 10:02:24,569 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 10:02:24,569 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 10:02:24,569 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e5380e9f-18ec-459d-8f8d-7b92ecbce6a8/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-12-08 10:02:24,578 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 10:02:24,578 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 10:02:24,579 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 10:02:24,579 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 10:02:24,579 INFO L133 SettingsManager]: * Use SBE=true [2018-12-08 10:02:24,579 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-12-08 10:02:24,579 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-12-08 10:02:24,579 INFO L133 SettingsManager]: * Use old map elimination=false [2018-12-08 10:02:24,579 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-12-08 10:02:24,580 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-12-08 10:02:24,580 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-12-08 10:02:24,580 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 10:02:24,580 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 10:02:24,580 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-08 10:02:24,580 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 10:02:24,580 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 10:02:24,580 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 10:02:24,581 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-12-08 10:02:24,581 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-12-08 10:02:24,581 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-12-08 10:02:24,581 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 10:02:24,581 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 10:02:24,581 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-12-08 10:02:24,581 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 10:02:24,581 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-12-08 10:02:24,581 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 10:02:24,581 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 10:02:24,582 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-12-08 10:02:24,582 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 10:02:24,582 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-08 10:02:24,582 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-12-08 10:02:24,582 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-12-08 10:02:24,582 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_e5380e9f-18ec-459d-8f8d-7b92ecbce6a8/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 -> 67bb0790f696b3c18eb630bed2fc34fee971c82b [2018-12-08 10:02:24,600 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 10:02:24,609 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 10:02:24,611 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 10:02:24,612 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 10:02:24,612 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 10:02:24,613 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e5380e9f-18ec-459d-8f8d-7b92ecbce6a8/bin-2019/uautomizer/../../sv-benchmarks/c/loop-invgen/nest-if3_true-unreach-call_true-termination.i [2018-12-08 10:02:24,655 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e5380e9f-18ec-459d-8f8d-7b92ecbce6a8/bin-2019/uautomizer/data/f0d049216/9bb2ce0ab8fa4703ade76b1f9a54a219/FLAGadd785e57 [2018-12-08 10:02:25,029 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 10:02:25,029 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e5380e9f-18ec-459d-8f8d-7b92ecbce6a8/sv-benchmarks/c/loop-invgen/nest-if3_true-unreach-call_true-termination.i [2018-12-08 10:02:25,033 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e5380e9f-18ec-459d-8f8d-7b92ecbce6a8/bin-2019/uautomizer/data/f0d049216/9bb2ce0ab8fa4703ade76b1f9a54a219/FLAGadd785e57 [2018-12-08 10:02:25,041 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e5380e9f-18ec-459d-8f8d-7b92ecbce6a8/bin-2019/uautomizer/data/f0d049216/9bb2ce0ab8fa4703ade76b1f9a54a219 [2018-12-08 10:02:25,043 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 10:02:25,044 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 10:02:25,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 10:02:25,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 10:02:25,046 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 10:02:25,046 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 10:02:25" (1/1) ... [2018-12-08 10:02:25,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f385d8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:25, skipping insertion in model container [2018-12-08 10:02:25,048 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 10:02:25" (1/1) ... [2018-12-08 10:02:25,052 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 10:02:25,061 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 10:02:25,142 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 10:02:25,144 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 10:02:25,153 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 10:02:25,160 INFO L195 MainTranslator]: Completed translation [2018-12-08 10:02:25,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:25 WrapperNode [2018-12-08 10:02:25,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 10:02:25,161 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 10:02:25,161 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 10:02:25,161 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 10:02:25,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:25" (1/1) ... [2018-12-08 10:02:25,169 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:25" (1/1) ... [2018-12-08 10:02:25,179 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 10:02:25,179 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 10:02:25,179 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 10:02:25,180 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 10:02:25,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:25" (1/1) ... [2018-12-08 10:02:25,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:25" (1/1) ... [2018-12-08 10:02:25,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:25" (1/1) ... [2018-12-08 10:02:25,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:25" (1/1) ... [2018-12-08 10:02:25,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:25" (1/1) ... [2018-12-08 10:02:25,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:25" (1/1) ... [2018-12-08 10:02:25,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:25" (1/1) ... [2018-12-08 10:02:25,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 10:02:25,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 10:02:25,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 10:02:25,191 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 10:02:25,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5380e9f-18ec-459d-8f8d-7b92ecbce6a8/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 10:02:25,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 10:02:25,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 10:02:25,334 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 10:02:25,334 INFO L280 CfgBuilder]: Removed 8 assue(true) statements. [2018-12-08 10:02:25,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 10:02:25 BoogieIcfgContainer [2018-12-08 10:02:25,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 10:02:25,335 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-12-08 10:02:25,335 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-12-08 10:02:25,337 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-12-08 10:02:25,338 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 10:02:25,338 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 08.12 10:02:25" (1/3) ... [2018-12-08 10:02:25,339 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@225f30d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 08.12 10:02:25, skipping insertion in model container [2018-12-08 10:02:25,339 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 10:02:25,339 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:25" (2/3) ... [2018-12-08 10:02:25,339 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@225f30d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 08.12 10:02:25, skipping insertion in model container [2018-12-08 10:02:25,339 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 10:02:25,339 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 10:02:25" (3/3) ... [2018-12-08 10:02:25,340 INFO L375 chiAutomizerObserver]: Analyzing ICFG nest-if3_true-unreach-call_true-termination.i [2018-12-08 10:02:25,374 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 10:02:25,375 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-12-08 10:02:25,375 INFO L375 BuchiCegarLoop]: Hoare is false [2018-12-08 10:02:25,375 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-12-08 10:02:25,375 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 10:02:25,375 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 10:02:25,375 INFO L379 BuchiCegarLoop]: Difference is false [2018-12-08 10:02:25,375 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 10:02:25,375 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-12-08 10:02:25,384 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2018-12-08 10:02:25,397 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-12-08 10:02:25,397 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 10:02:25,397 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 10:02:25,401 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-12-08 10:02:25,401 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-12-08 10:02:25,401 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-12-08 10:02:25,401 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2018-12-08 10:02:25,402 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-12-08 10:02:25,402 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 10:02:25,402 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 10:02:25,402 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-12-08 10:02:25,402 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-12-08 10:02:25,407 INFO L794 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~post4, main_#t~nondet5, main_#t~post3, main_~i~0, main_~k~0, main_~n~0, main_~l~0;havoc main_~i~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~l~0 := main_#t~nondet2;havoc main_#t~nondet2; 14#L14true assume !!(main_~l~0 > 0); 3#L15true assume !!(main_~l~0 < 1000000); 7#L16true assume !!(main_~n~0 < 1000000);main_~k~0 := 1; 15#L17-3true [2018-12-08 10:02:25,407 INFO L796 eck$LassoCheckResult]: Loop: 15#L17-3true assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 8#L18-2true assume !true; 4#L18-3true assume 0 != main_#t~nondet5;havoc main_#t~nondet5;main_~l~0 := 1 + main_~l~0; 5#L17-2true main_#t~post3 := main_~k~0;main_~k~0 := 1 + main_#t~post3;havoc main_#t~post3; 15#L17-3true [2018-12-08 10:02:25,411 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:25,411 INFO L82 PathProgramCache]: Analyzing trace with hash 959435, now seen corresponding path program 1 times [2018-12-08 10:02:25,412 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:25,412 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:25,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:25,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:02:25,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:25,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 10:02:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 10:02:25,473 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:25,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1683322, now seen corresponding path program 1 times [2018-12-08 10:02:25,473 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:25,473 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:25,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:25,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:02:25,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:25,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:25,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:25,491 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 10:02:25,492 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-08 10:02:25,494 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-12-08 10:02:25,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-08 10:02:25,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-08 10:02:25,504 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2018-12-08 10:02:25,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:25,508 INFO L93 Difference]: Finished difference Result 14 states and 19 transitions. [2018-12-08 10:02:25,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-08 10:02:25,509 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2018-12-08 10:02:25,510 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-12-08 10:02:25,512 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 12 transitions. [2018-12-08 10:02:25,513 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-12-08 10:02:25,513 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2018-12-08 10:02:25,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 12 transitions. [2018-12-08 10:02:25,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-08 10:02:25,513 INFO L705 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2018-12-08 10:02:25,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 12 transitions. [2018-12-08 10:02:25,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-12-08 10:02:25,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-12-08 10:02:25,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2018-12-08 10:02:25,529 INFO L728 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2018-12-08 10:02:25,530 INFO L608 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2018-12-08 10:02:25,530 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-12-08 10:02:25,530 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 12 transitions. [2018-12-08 10:02:25,530 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-12-08 10:02:25,530 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 10:02:25,530 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 10:02:25,530 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-12-08 10:02:25,530 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-12-08 10:02:25,531 INFO L794 eck$LassoCheckResult]: Stem: 41#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~post4, main_#t~nondet5, main_#t~post3, main_~i~0, main_~k~0, main_~n~0, main_~l~0;havoc main_~i~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~l~0 := main_#t~nondet2;havoc main_#t~nondet2; 42#L14 assume !!(main_~l~0 > 0); 39#L15 assume !!(main_~l~0 < 1000000); 40#L16 assume !!(main_~n~0 < 1000000);main_~k~0 := 1; 38#L17-3 [2018-12-08 10:02:25,531 INFO L796 eck$LassoCheckResult]: Loop: 38#L17-3 assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 43#L18-2 assume !(main_~i~0 < main_~n~0); 36#L18-3 assume 0 != main_#t~nondet5;havoc main_#t~nondet5;main_~l~0 := 1 + main_~l~0; 37#L17-2 main_#t~post3 := main_~k~0;main_~k~0 := 1 + main_#t~post3;havoc main_#t~post3; 38#L17-3 [2018-12-08 10:02:25,531 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:25,531 INFO L82 PathProgramCache]: Analyzing trace with hash 959435, now seen corresponding path program 2 times [2018-12-08 10:02:25,531 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:25,531 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:25,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:25,532 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:02:25,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:25,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 10:02:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 10:02:25,536 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:25,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1668907, now seen corresponding path program 1 times [2018-12-08 10:02:25,536 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:25,536 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:25,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:25,537 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 10:02:25,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 10:02:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 10:02:25,544 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:25,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1295853045, now seen corresponding path program 1 times [2018-12-08 10:02:25,544 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:25,545 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:25,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:25,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:02:25,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:25,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 10:02:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 10:02:25,593 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 10:02:25,594 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 10:02:25,594 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 10:02:25,594 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 10:02:25,594 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 10:02:25,594 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 10:02:25,594 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 10:02:25,594 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 10:02:25,594 INFO L131 ssoRankerPreferences]: Filename of dumped script: nest-if3_true-unreach-call_true-termination.i_Iteration2_Loop [2018-12-08 10:02:25,595 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 10:02:25,595 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 10:02:25,607 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 10:02:25,612 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 10:02:25,623 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 10:02:25,673 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 10:02:25,673 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5380e9f-18ec-459d-8f8d-7b92ecbce6a8/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 10:02:25,677 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 10:02:25,677 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 10:02:25,683 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 10:02:25,683 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet5=7} Honda state: {ULTIMATE.start_main_#t~nondet5=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5380e9f-18ec-459d-8f8d-7b92ecbce6a8/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 10:02:25,698 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 10:02:25,699 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5380e9f-18ec-459d-8f8d-7b92ecbce6a8/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 10:02:25,725 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 10:02:25,725 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 10:02:25,962 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 10:02:25,963 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 10:02:25,964 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 10:02:25,964 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 10:02:25,964 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 10:02:25,964 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 10:02:25,964 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 10:02:25,964 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 10:02:25,964 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 10:02:25,964 INFO L131 ssoRankerPreferences]: Filename of dumped script: nest-if3_true-unreach-call_true-termination.i_Iteration2_Loop [2018-12-08 10:02:25,964 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 10:02:25,964 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 10:02:25,965 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 10:02:25,970 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 10:02:25,978 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 10:02:26,008 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 10:02:26,011 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 10:02:26,012 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 10:02:26,013 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 10:02:26,013 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 10:02:26,013 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 10:02:26,013 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-12-08 10:02:26,013 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 10:02:26,015 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-12-08 10:02:26,015 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 10:02:26,019 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 10:02:26,020 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 10:02:26,020 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 10:02:26,020 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 10:02:26,020 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 10:02:26,020 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 10:02:26,021 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 10:02:26,021 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 10:02:26,021 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 10:02:26,027 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 10:02:26,031 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 10:02:26,031 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-08 10:02:26,033 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 10:02:26,033 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 10:02:26,033 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 10:02:26,033 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~k~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~k~0 Supporting invariants [] [2018-12-08 10:02:26,034 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 10:02:26,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:26,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:26,055 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:26,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:26,062 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:26,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:26,076 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-08 10:02:26,077 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 12 transitions. cyclomatic complexity: 3 Second operand 3 states. [2018-12-08 10:02:26,108 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 12 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 17 states and 23 transitions. Complement of second has 4 states. [2018-12-08 10:02:26,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-08 10:02:26,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 10:02:26,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2018-12-08 10:02:26,111 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 4 letters. Loop has 4 letters. [2018-12-08 10:02:26,112 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 10:02:26,112 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 8 letters. Loop has 4 letters. [2018-12-08 10:02:26,112 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 10:02:26,112 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 4 letters. Loop has 8 letters. [2018-12-08 10:02:26,113 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 10:02:26,113 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 23 transitions. [2018-12-08 10:02:26,114 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-08 10:02:26,114 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 15 states and 19 transitions. [2018-12-08 10:02:26,114 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-12-08 10:02:26,114 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2018-12-08 10:02:26,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 19 transitions. [2018-12-08 10:02:26,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 10:02:26,115 INFO L705 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2018-12-08 10:02:26,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 19 transitions. [2018-12-08 10:02:26,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2018-12-08 10:02:26,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-12-08 10:02:26,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2018-12-08 10:02:26,116 INFO L728 BuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2018-12-08 10:02:26,116 INFO L608 BuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2018-12-08 10:02:26,116 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-12-08 10:02:26,116 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 18 transitions. [2018-12-08 10:02:26,117 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-08 10:02:26,117 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 10:02:26,117 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 10:02:26,117 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-12-08 10:02:26,117 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-08 10:02:26,118 INFO L794 eck$LassoCheckResult]: Stem: 116#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~post4, main_#t~nondet5, main_#t~post3, main_~i~0, main_~k~0, main_~n~0, main_~l~0;havoc main_~i~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~l~0 := main_#t~nondet2;havoc main_#t~nondet2; 117#L14 assume !!(main_~l~0 > 0); 110#L15 assume !!(main_~l~0 < 1000000); 111#L16 assume !!(main_~n~0 < 1000000);main_~k~0 := 1; 118#L17-3 assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 112#L18-2 [2018-12-08 10:02:26,118 INFO L796 eck$LassoCheckResult]: Loop: 112#L18-2 assume !!(main_~i~0 < main_~n~0);__VERIFIER_assert_#in~cond := (if 1 <= main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 113#L4 assume !(0 == __VERIFIER_assert_~cond); 119#L4-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 112#L18-2 [2018-12-08 10:02:26,118 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:26,118 INFO L82 PathProgramCache]: Analyzing trace with hash 29742509, now seen corresponding path program 1 times [2018-12-08 10:02:26,118 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:26,118 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:26,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:26,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:02:26,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:26,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 10:02:26,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 10:02:26,126 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:26,126 INFO L82 PathProgramCache]: Analyzing trace with hash 61795, now seen corresponding path program 1 times [2018-12-08 10:02:26,126 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:26,126 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:26,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:26,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:02:26,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 10:02:26,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 10:02:26,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:26,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1295854647, now seen corresponding path program 1 times [2018-12-08 10:02:26,136 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:26,137 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:26,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:26,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:02:26,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:26,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 10:02:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 10:02:26,164 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 10:02:26,164 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 10:02:26,164 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 10:02:26,164 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 10:02:26,164 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 10:02:26,164 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 10:02:26,165 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 10:02:26,165 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 10:02:26,165 INFO L131 ssoRankerPreferences]: Filename of dumped script: nest-if3_true-unreach-call_true-termination.i_Iteration3_Loop [2018-12-08 10:02:26,165 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 10:02:26,165 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 10:02:26,166 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 10:02:26,175 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 10:02:26,226 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 10:02:26,226 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5380e9f-18ec-459d-8f8d-7b92ecbce6a8/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 10:02:26,228 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 10:02:26,228 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5380e9f-18ec-459d-8f8d-7b92ecbce6a8/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 10:02:26,245 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 10:02:26,245 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 10:02:26,339 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 10:02:26,340 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 10:02:26,340 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 10:02:26,340 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 10:02:26,340 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 10:02:26,340 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 10:02:26,340 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 10:02:26,340 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 10:02:26,340 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 10:02:26,341 INFO L131 ssoRankerPreferences]: Filename of dumped script: nest-if3_true-unreach-call_true-termination.i_Iteration3_Loop [2018-12-08 10:02:26,341 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 10:02:26,341 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 10:02:26,342 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 10:02:26,349 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 10:02:26,383 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 10:02:26,383 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 10:02:26,383 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 10:02:26,384 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 10:02:26,384 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 10:02:26,385 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 10:02:26,385 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 10:02:26,385 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 10:02:26,386 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 10:02:26,386 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 10:02:26,392 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 10:02:26,398 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-12-08 10:02:26,398 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-08 10:02:26,398 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 10:02:26,398 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 10:02:26,398 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 10:02:26,398 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2018-12-08 10:02:26,399 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 10:02:26,410 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:26,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:26,413 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:26,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:26,417 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:26,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:26,424 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-08 10:02:26,425 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 18 transitions. cyclomatic complexity: 6 Second operand 3 states. [2018-12-08 10:02:26,436 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 18 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 31 states and 40 transitions. Complement of second has 7 states. [2018-12-08 10:02:26,436 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 [2018-12-08 10:02:26,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 10:02:26,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2018-12-08 10:02:26,437 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 5 letters. Loop has 3 letters. [2018-12-08 10:02:26,437 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 10:02:26,437 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 8 letters. Loop has 3 letters. [2018-12-08 10:02:26,437 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 10:02:26,437 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 5 letters. Loop has 6 letters. [2018-12-08 10:02:26,437 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 10:02:26,438 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 40 transitions. [2018-12-08 10:02:26,439 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-08 10:02:26,440 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 20 states and 26 transitions. [2018-12-08 10:02:26,440 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-12-08 10:02:26,440 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-12-08 10:02:26,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 26 transitions. [2018-12-08 10:02:26,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 10:02:26,441 INFO L705 BuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2018-12-08 10:02:26,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 26 transitions. [2018-12-08 10:02:26,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 14. [2018-12-08 10:02:26,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-12-08 10:02:26,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2018-12-08 10:02:26,442 INFO L728 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2018-12-08 10:02:26,442 INFO L608 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2018-12-08 10:02:26,442 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-12-08 10:02:26,442 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 17 transitions. [2018-12-08 10:02:26,443 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-08 10:02:26,443 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 10:02:26,443 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 10:02:26,443 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:26,443 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-08 10:02:26,444 INFO L794 eck$LassoCheckResult]: Stem: 210#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~post4, main_#t~nondet5, main_#t~post3, main_~i~0, main_~k~0, main_~n~0, main_~l~0;havoc main_~i~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~l~0 := main_#t~nondet2;havoc main_#t~nondet2; 211#L14 assume !!(main_~l~0 > 0); 200#L15 assume !!(main_~l~0 < 1000000); 201#L16 assume !!(main_~n~0 < 1000000);main_~k~0 := 1; 209#L17-3 assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 207#L18-2 assume !(main_~i~0 < main_~n~0); 202#L18-3 assume !(0 != main_#t~nondet5);havoc main_#t~nondet5; 203#L17-2 main_#t~post3 := main_~k~0;main_~k~0 := 1 + main_#t~post3;havoc main_#t~post3; 204#L17-3 assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 205#L18-2 [2018-12-08 10:02:26,444 INFO L796 eck$LassoCheckResult]: Loop: 205#L18-2 assume !!(main_~i~0 < main_~n~0);__VERIFIER_assert_#in~cond := (if 1 <= main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 206#L4 assume !(0 == __VERIFIER_assert_~cond); 212#L4-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 205#L18-2 [2018-12-08 10:02:26,444 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:26,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1516740677, now seen corresponding path program 1 times [2018-12-08 10:02:26,444 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:26,444 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:26,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:26,445 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:02:26,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:26,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 10:02:26,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 10:02:26,454 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:26,454 INFO L82 PathProgramCache]: Analyzing trace with hash 61795, now seen corresponding path program 2 times [2018-12-08 10:02:26,454 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:26,454 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:26,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:26,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:02:26,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:26,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 10:02:26,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 10:02:26,459 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:26,460 INFO L82 PathProgramCache]: Analyzing trace with hash -2129380705, now seen corresponding path program 1 times [2018-12-08 10:02:26,460 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:26,460 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:26,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:26,461 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 10:02:26,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:26,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:26,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:26,488 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 10:02:26,488 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5380e9f-18ec-459d-8f8d-7b92ecbce6a8/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 10:02:26,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:02:26,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:26,499 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:26,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:26,523 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 10:02:26,523 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-12-08 10:02:26,535 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 10:02:26,535 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 10:02:26,535 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 10:02:26,536 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 10:02:26,536 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 10:02:26,536 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 10:02:26,536 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 10:02:26,536 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 10:02:26,536 INFO L131 ssoRankerPreferences]: Filename of dumped script: nest-if3_true-unreach-call_true-termination.i_Iteration4_Loop [2018-12-08 10:02:26,536 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 10:02:26,536 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 10:02:26,537 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 10:02:26,543 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 10:02:26,576 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 10:02:26,577 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5380e9f-18ec-459d-8f8d-7b92ecbce6a8/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 10:02:26,579 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 10:02:26,579 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5380e9f-18ec-459d-8f8d-7b92ecbce6a8/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 10:02:26,596 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 10:02:26,596 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 10:02:26,665 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 10:02:26,666 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 10:02:26,666 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 10:02:26,666 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 10:02:26,666 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 10:02:26,666 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 10:02:26,666 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 10:02:26,666 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 10:02:26,666 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 10:02:26,666 INFO L131 ssoRankerPreferences]: Filename of dumped script: nest-if3_true-unreach-call_true-termination.i_Iteration4_Loop [2018-12-08 10:02:26,666 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 10:02:26,667 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 10:02:26,667 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 10:02:26,669 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 10:02:26,705 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 10:02:26,706 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 10:02:26,706 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 10:02:26,706 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 10:02:26,706 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 10:02:26,707 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 10:02:26,707 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 10:02:26,707 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 10:02:26,707 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 10:02:26,707 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 10:02:26,708 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 10:02:26,708 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 10:02:26,708 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 10:02:26,708 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 10:02:26,709 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 10:02:26,709 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 10:02:26,709 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 10:02:26,710 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 10:02:26,710 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 10:02:26,713 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 10:02:26,718 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-12-08 10:02:26,718 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-08 10:02:26,718 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 10:02:26,719 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 10:02:26,719 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 10:02:26,719 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~n~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~n~0 Supporting invariants [] [2018-12-08 10:02:26,719 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 10:02:26,729 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:26,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:26,732 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:26,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:26,735 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:26,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:26,742 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-08 10:02:26,742 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-12-08 10:02:26,751 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 25 states and 32 transitions. Complement of second has 7 states. [2018-12-08 10:02:26,751 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 [2018-12-08 10:02:26,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 10:02:26,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2018-12-08 10:02:26,752 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 9 letters. Loop has 3 letters. [2018-12-08 10:02:26,752 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 10:02:26,752 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-08 10:02:26,763 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:26,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:26,767 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:26,770 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:26,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:26,777 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-08 10:02:26,777 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-12-08 10:02:26,785 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 25 states and 32 transitions. Complement of second has 7 states. [2018-12-08 10:02:26,785 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 [2018-12-08 10:02:26,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 10:02:26,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2018-12-08 10:02:26,786 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 9 letters. Loop has 3 letters. [2018-12-08 10:02:26,786 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 10:02:26,786 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-08 10:02:26,795 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:26,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:26,800 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:26,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:26,803 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:26,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:26,810 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-08 10:02:26,810 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-12-08 10:02:26,820 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 22 states and 27 transitions. Complement of second has 6 states. [2018-12-08 10:02:26,820 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 [2018-12-08 10:02:26,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 10:02:26,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2018-12-08 10:02:26,821 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 9 letters. Loop has 3 letters. [2018-12-08 10:02:26,821 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 10:02:26,821 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 12 letters. Loop has 3 letters. [2018-12-08 10:02:26,821 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 10:02:26,821 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 9 letters. Loop has 6 letters. [2018-12-08 10:02:26,821 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 10:02:26,821 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 27 transitions. [2018-12-08 10:02:26,822 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-08 10:02:26,822 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2018-12-08 10:02:26,822 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-08 10:02:26,822 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-08 10:02:26,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-08 10:02:26,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-08 10:02:26,822 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 10:02:26,822 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 10:02:26,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-08 10:02:26,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-12-08 10:02:26,823 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 6 states. [2018-12-08 10:02:26,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:26,823 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-12-08 10:02:26,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-08 10:02:26,823 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-12-08 10:02:26,823 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-08 10:02:26,823 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-12-08 10:02:26,823 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-08 10:02:26,823 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-08 10:02:26,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-08 10:02:26,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-08 10:02:26,824 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 10:02:26,824 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 10:02:26,824 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 10:02:26,824 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-12-08 10:02:26,824 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-12-08 10:02:26,824 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-08 10:02:26,824 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-12-08 10:02:26,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 08.12 10:02:26 BoogieIcfgContainer [2018-12-08 10:02:26,828 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-12-08 10:02:26,828 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 10:02:26,828 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 10:02:26,828 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 10:02:26,829 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 10:02:25" (3/4) ... [2018-12-08 10:02:26,831 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-08 10:02:26,831 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 10:02:26,831 INFO L168 Benchmark]: Toolchain (without parser) took 1788.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 959.8 MB in the beginning and 887.1 MB in the end (delta: 72.7 MB). Peak memory consumption was 200.6 MB. Max. memory is 11.5 GB. [2018-12-08 10:02:26,832 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 10:02:26,832 INFO L168 Benchmark]: CACSL2BoogieTranslator took 116.74 ms. Allocated memory is still 1.0 GB. Free memory was 959.8 MB in the beginning and 949.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-08 10:02:26,833 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.20 ms. Allocated memory is still 1.0 GB. Free memory is still 949.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 10:02:26,833 INFO L168 Benchmark]: Boogie Preprocessor took 11.11 ms. Allocated memory is still 1.0 GB. Free memory was 949.0 MB in the beginning and 946.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-08 10:02:26,833 INFO L168 Benchmark]: RCFGBuilder took 143.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 946.3 MB in the beginning and 1.1 GB in the end (delta: -164.6 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. [2018-12-08 10:02:26,834 INFO L168 Benchmark]: BuchiAutomizer took 1493.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 887.1 MB in the end (delta: 223.9 MB). Peak memory consumption was 223.9 MB. Max. memory is 11.5 GB. [2018-12-08 10:02:26,834 INFO L168 Benchmark]: Witness Printer took 2.61 ms. Allocated memory is still 1.2 GB. Free memory is still 887.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 10:02:26,836 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 985.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 116.74 ms. Allocated memory is still 1.0 GB. Free memory was 959.8 MB in the beginning and 949.0 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 18.20 ms. Allocated memory is still 1.0 GB. Free memory is still 949.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.11 ms. Allocated memory is still 1.0 GB. Free memory was 949.0 MB in the beginning and 946.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 143.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 946.3 MB in the beginning and 1.1 GB in the end (delta: -164.6 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1493.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 887.1 MB in the end (delta: 223.9 MB). Peak memory consumption was 223.9 MB. Max. memory is 11.5 GB. * Witness Printer took 2.61 ms. Allocated memory is still 1.2 GB. Free memory is still 887.1 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 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function n + -1 * k and consists of 3 locations. One deterministic module has affine ranking function n + -1 * i and consists of 4 locations. One nondeterministic module has affine ranking function -1 * i + n and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.4s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 14 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 70 SDtfs, 66 SDslu, 28 SDs, 0 SdLazy, 41 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital25 mio100 ax100 hnf98 lsp94 ukn100 mio100 lsp100 div100 bol100 ite121 ukn100 eq169 hnf91 smp71 dnf97 smp100 tf106 neg97 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 8ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...