./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_3c6abcf2-e104-43ae-94fb-9458405ae05f/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3c6abcf2-e104-43ae-94fb-9458405ae05f/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3c6abcf2-e104-43ae-94fb-9458405ae05f/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3c6abcf2-e104-43ae-94fb-9458405ae05f/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_3c6abcf2-e104-43ae-94fb-9458405ae05f/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3c6abcf2-e104-43ae-94fb-9458405ae05f/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 64bit --witnessprinter.graph.data.programhash 7c08193784b646afd298f73ae6296b7af2e0cac1 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 08:34:35,082 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 08:34:35,084 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 08:34:35,092 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 08:34:35,093 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 08:34:35,093 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 08:34:35,094 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 08:34:35,096 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 08:34:35,097 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 08:34:35,098 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 08:34:35,099 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 08:34:35,099 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 08:34:35,100 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 08:34:35,100 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 08:34:35,101 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 08:34:35,102 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 08:34:35,103 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 08:34:35,104 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 08:34:35,106 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 08:34:35,107 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 08:34:35,108 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 08:34:35,109 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 08:34:35,111 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 08:34:35,111 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 08:34:35,111 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 08:34:35,112 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 08:34:35,113 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 08:34:35,113 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 08:34:35,114 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 08:34:35,115 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 08:34:35,115 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 08:34:35,116 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 08:34:35,116 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 08:34:35,116 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 08:34:35,117 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 08:34:35,117 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 08:34:35,117 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3c6abcf2-e104-43ae-94fb-9458405ae05f/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-18 08:34:35,128 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 08:34:35,129 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 08:34:35,130 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 08:34:35,130 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 08:34:35,130 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 08:34:35,130 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-18 08:34:35,130 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-18 08:34:35,130 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-18 08:34:35,130 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-18 08:34:35,131 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-18 08:34:35,131 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-18 08:34:35,131 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 08:34:35,131 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 08:34:35,131 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 08:34:35,131 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 08:34:35,131 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-18 08:34:35,131 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-18 08:34:35,132 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-18 08:34:35,132 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 08:34:35,132 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-18 08:34:35,132 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 08:34:35,132 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-18 08:34:35,132 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 08:34:35,132 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 08:34:35,132 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-18 08:34:35,133 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 08:34:35,133 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 08:34:35,133 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-18 08:34:35,133 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-18 08:34:35,133 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_3c6abcf2-e104-43ae-94fb-9458405ae05f/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c08193784b646afd298f73ae6296b7af2e0cac1 [2018-11-18 08:34:35,154 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 08:34:35,162 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 08:34:35,164 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 08:34:35,164 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 08:34:35,165 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 08:34:35,165 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3c6abcf2-e104-43ae-94fb-9458405ae05f/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1_true-termination_true-no-overflow.c [2018-11-18 08:34:35,202 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3c6abcf2-e104-43ae-94fb-9458405ae05f/bin-2019/uautomizer/data/172521d9a/432ba6bb88b3493bbe7c3a0a179fc7e7/FLAG50e7bb305 [2018-11-18 08:34:35,520 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 08:34:35,521 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3c6abcf2-e104-43ae-94fb-9458405ae05f/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1_true-termination_true-no-overflow.c [2018-11-18 08:34:35,525 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3c6abcf2-e104-43ae-94fb-9458405ae05f/bin-2019/uautomizer/data/172521d9a/432ba6bb88b3493bbe7c3a0a179fc7e7/FLAG50e7bb305 [2018-11-18 08:34:35,961 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3c6abcf2-e104-43ae-94fb-9458405ae05f/bin-2019/uautomizer/data/172521d9a/432ba6bb88b3493bbe7c3a0a179fc7e7 [2018-11-18 08:34:35,964 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 08:34:35,964 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 08:34:35,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 08:34:35,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 08:34:35,967 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 08:34:35,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:34:35" (1/1) ... [2018-11-18 08:34:35,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5efa4a5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:35, skipping insertion in model container [2018-11-18 08:34:35,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:34:35" (1/1) ... [2018-11-18 08:34:35,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 08:34:35,985 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 08:34:36,082 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:34:36,084 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 08:34:36,093 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:34:36,101 INFO L195 MainTranslator]: Completed translation [2018-11-18 08:34:36,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:36 WrapperNode [2018-11-18 08:34:36,101 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 08:34:36,101 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 08:34:36,102 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 08:34:36,102 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 08:34:36,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:36" (1/1) ... [2018-11-18 08:34:36,109 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:36" (1/1) ... [2018-11-18 08:34:36,119 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 08:34:36,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 08:34:36,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 08:34:36,120 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 08:34:36,125 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:36" (1/1) ... [2018-11-18 08:34:36,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:36" (1/1) ... [2018-11-18 08:34:36,125 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:36" (1/1) ... [2018-11-18 08:34:36,125 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:36" (1/1) ... [2018-11-18 08:34:36,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:36" (1/1) ... [2018-11-18 08:34:36,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:36" (1/1) ... [2018-11-18 08:34:36,129 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:36" (1/1) ... [2018-11-18 08:34:36,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 08:34:36,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 08:34:36,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 08:34:36,130 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 08:34:36,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3c6abcf2-e104-43ae-94fb-9458405ae05f/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:36,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 08:34:36,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 08:34:36,304 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 08:34:36,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:34:36 BoogieIcfgContainer [2018-11-18 08:34:36,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 08:34:36,305 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-18 08:34:36,305 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-18 08:34:36,307 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-18 08:34:36,308 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 08:34:36,308 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.11 08:34:35" (1/3) ... [2018-11-18 08:34:36,309 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@74067110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 08:34:36, skipping insertion in model container [2018-11-18 08:34:36,309 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 08:34:36,309 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:36" (2/3) ... [2018-11-18 08:34:36,309 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@74067110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 08:34:36, skipping insertion in model container [2018-11-18 08:34:36,309 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 08:34:36,310 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:34:36" (3/3) ... [2018-11-18 08:34:36,311 INFO L375 chiAutomizerObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Fig1_true-termination_true-no-overflow.c [2018-11-18 08:34:36,358 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 08:34:36,359 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-18 08:34:36,359 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-18 08:34:36,359 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-18 08:34:36,359 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 08:34:36,359 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 08:34:36,359 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-18 08:34:36,360 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 08:34:36,360 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-18 08:34:36,372 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-11-18 08:34:36,390 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-18 08:34:36,391 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 08:34:36,391 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 08:34:36,396 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 08:34:36,396 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 08:34:36,396 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-18 08:34:36,396 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-11-18 08:34:36,397 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-18 08:34:36,397 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 08:34:36,397 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 08:34:36,398 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 08:34:36,398 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 08:34:36,405 INFO L794 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 3#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~i~0, main_~j~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~n~0 := main_#t~nondet2;havoc main_#t~nondet2; 7#L19-3true [2018-11-18 08:34:36,405 INFO L796 eck$LassoCheckResult]: Loop: 7#L19-3true assume true; 10#L19-1true assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 11#L21-3true assume !true; 8#L21-4true main_~i~0 := 1 + main_~i~0; 7#L19-3true [2018-11-18 08:34:36,410 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:36,411 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-11-18 08:34:36,413 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:36,414 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:36,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:36,460 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:36,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:36,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:36,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:36,483 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:36,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1114569, now seen corresponding path program 1 times [2018-11-18 08:34:36,483 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:36,483 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:36,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:36,484 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:36,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:36,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:34:36,504 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:34:36,504 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 08:34:36,507 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-18 08:34:36,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 08:34:36,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 08:34:36,518 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2018-11-18 08:34:36,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:34:36,523 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-11-18 08:34:36,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 08:34:36,524 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 12 transitions. [2018-11-18 08:34:36,525 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-18 08:34:36,527 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 7 states and 8 transitions. [2018-11-18 08:34:36,528 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-18 08:34:36,528 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-18 08:34:36,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2018-11-18 08:34:36,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 08:34:36,530 INFO L705 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-11-18 08:34:36,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2018-11-18 08:34:36,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-11-18 08:34:36,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-18 08:34:36,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2018-11-18 08:34:36,552 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-11-18 08:34:36,552 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-11-18 08:34:36,552 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-18 08:34:36,552 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2018-11-18 08:34:36,553 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-18 08:34:36,553 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 08:34:36,553 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 08:34:36,553 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 08:34:36,553 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-18 08:34:36,554 INFO L794 eck$LassoCheckResult]: Stem: 32#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 30#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~i~0, main_~j~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~n~0 := main_#t~nondet2;havoc main_#t~nondet2; 31#L19-3 [2018-11-18 08:34:36,554 INFO L796 eck$LassoCheckResult]: Loop: 31#L19-3 assume true; 33#L19-1 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 35#L21-3 assume true; 36#L21-1 assume !(main_~j~0 <= main_~i~0); 34#L21-4 main_~i~0 := 1 + main_~i~0; 31#L19-3 [2018-11-18 08:34:36,554 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:36,554 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2018-11-18 08:34:36,554 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:36,554 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:36,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:36,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:36,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:36,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:36,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:36,559 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:36,559 INFO L82 PathProgramCache]: Analyzing trace with hash 34543791, now seen corresponding path program 1 times [2018-11-18 08:34:36,559 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:36,560 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:36,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:36,561 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 08:34:36,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:36,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:36,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:36,569 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:36,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1805983277, now seen corresponding path program 1 times [2018-11-18 08:34:36,569 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:36,569 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:36,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:36,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:36,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:36,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:36,618 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 08:34:36,619 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 08:34:36,619 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 08:34:36,619 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 08:34:36,619 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 08:34:36,619 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:36,619 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 08:34:36,619 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 08:34:36,619 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-18 08:34:36,619 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 08:34:36,620 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 08:34:36,633 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:36,643 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:36,646 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:36,750 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 08:34:36,750 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3c6abcf2-e104-43ae-94fb-9458405ae05f/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:36,754 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:36,755 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:36,774 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:36,774 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3c6abcf2-e104-43ae-94fb-9458405ae05f/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:36,779 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:36,779 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:36,795 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:36,795 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3c6abcf2-e104-43ae-94fb-9458405ae05f/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:36,798 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:36,798 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3c6abcf2-e104-43ae-94fb-9458405ae05f/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:36,825 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 08:34:36,825 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:36,921 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 08:34:36,922 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 08:34:36,922 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 08:34:36,922 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 08:34:36,922 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 08:34:36,922 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 08:34:36,922 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:36,922 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 08:34:36,922 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 08:34:36,922 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-18 08:34:36,923 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 08:34:36,923 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 08:34:36,924 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:36,938 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:36,947 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:36,990 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 08:34:36,993 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 08:34:36,994 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 08:34:36,995 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:34:36,995 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:34:36,995 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:34:36,995 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:34:36,998 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 08:34:36,998 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 08:34:37,004 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 08:34:37,004 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 08:34:37,005 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:34:37,005 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 08:34:37,005 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:34:37,005 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:34:37,005 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:34:37,006 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 08:34:37,006 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 08:34:37,012 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 08:34:37,017 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2018-11-18 08:34:37,018 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-11-18 08:34:37,019 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 08:34:37,019 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 08:34:37,019 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 08:34:37,019 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2018-11-18 08:34:37,020 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 08:34:37,037 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:37,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:37,043 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:37,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:37,049 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:37,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:34:37,079 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-18 08:34:37,080 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2 Second operand 5 states. [2018-11-18 08:34:37,120 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2. Second operand 5 states. Result 21 states and 26 transitions. Complement of second has 8 states. [2018-11-18 08:34:37,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-18 08:34:37,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-18 08:34:37,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2018-11-18 08:34:37,122 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 2 letters. Loop has 5 letters. [2018-11-18 08:34:37,123 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:34:37,123 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 7 letters. Loop has 5 letters. [2018-11-18 08:34:37,123 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:34:37,124 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 2 letters. Loop has 10 letters. [2018-11-18 08:34:37,124 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:34:37,124 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 26 transitions. [2018-11-18 08:34:37,125 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-11-18 08:34:37,125 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 20 states and 25 transitions. [2018-11-18 08:34:37,125 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-11-18 08:34:37,126 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-11-18 08:34:37,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 25 transitions. [2018-11-18 08:34:37,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 08:34:37,126 INFO L705 BuchiCegarLoop]: Abstraction has 20 states and 25 transitions. [2018-11-18 08:34:37,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 25 transitions. [2018-11-18 08:34:37,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2018-11-18 08:34:37,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-18 08:34:37,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2018-11-18 08:34:37,128 INFO L728 BuchiCegarLoop]: Abstraction has 19 states and 24 transitions. [2018-11-18 08:34:37,128 INFO L608 BuchiCegarLoop]: Abstraction has 19 states and 24 transitions. [2018-11-18 08:34:37,128 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-18 08:34:37,128 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 24 transitions. [2018-11-18 08:34:37,129 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-11-18 08:34:37,129 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 08:34:37,129 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 08:34:37,130 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-18 08:34:37,130 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1] [2018-11-18 08:34:37,130 INFO L794 eck$LassoCheckResult]: Stem: 113#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 107#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~i~0, main_~j~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~n~0 := main_#t~nondet2;havoc main_#t~nondet2; 108#L19-3 assume true; 110#L19-1 [2018-11-18 08:34:37,130 INFO L796 eck$LassoCheckResult]: Loop: 110#L19-1 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 116#L21-3 assume true; 117#L21-1 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := 1 + main_~j~0; 121#L21-3 assume true; 122#L21-1 assume !(main_~j~0 <= main_~i~0); 114#L21-4 main_~i~0 := 1 + main_~i~0; 109#L19-3 assume true; 110#L19-1 [2018-11-18 08:34:37,130 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:37,130 INFO L82 PathProgramCache]: Analyzing trace with hash 29859, now seen corresponding path program 1 times [2018-11-18 08:34:37,130 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:37,130 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:37,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:37,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:37,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:37,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:37,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:37,133 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:37,133 INFO L82 PathProgramCache]: Analyzing trace with hash -13166815, now seen corresponding path program 1 times [2018-11-18 08:34:37,133 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:37,133 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:37,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:37,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:37,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:37,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:37,141 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:37,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1005942721, now seen corresponding path program 1 times [2018-11-18 08:34:37,142 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:37,142 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:37,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:37,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:37,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:37,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:37,183 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 08:34:37,183 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 08:34:37,183 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 08:34:37,183 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 08:34:37,183 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 08:34:37,183 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:37,183 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 08:34:37,183 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 08:34:37,183 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-18 08:34:37,183 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 08:34:37,183 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 08:34:37,184 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:37,186 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:37,188 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:37,248 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 08:34:37,249 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3c6abcf2-e104-43ae-94fb-9458405ae05f/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:37,258 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:37,258 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:37,278 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:37,278 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3c6abcf2-e104-43ae-94fb-9458405ae05f/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:37,282 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:37,283 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:37,306 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:37,307 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3c6abcf2-e104-43ae-94fb-9458405ae05f/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:37,309 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:37,309 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3c6abcf2-e104-43ae-94fb-9458405ae05f/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:37,327 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 08:34:37,327 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:37,384 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 08:34:37,385 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 08:34:37,385 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 08:34:37,385 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 08:34:37,386 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 08:34:37,386 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 08:34:37,386 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:37,386 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 08:34:37,386 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 08:34:37,386 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-18 08:34:37,386 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 08:34:37,387 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 08:34:37,388 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:37,390 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:37,391 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:37,489 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 08:34:37,489 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 08:34:37,489 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 08:34:37,490 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:34:37,490 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:34:37,490 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:34:37,490 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:34:37,491 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 08:34:37,492 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 08:34:37,494 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 08:34:37,494 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 08:34:37,495 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:34:37,495 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:34:37,495 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:34:37,495 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:34:37,496 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 08:34:37,496 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 08:34:37,500 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 08:34:37,501 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 08:34:37,501 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:34:37,501 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 08:34:37,502 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:34:37,502 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:34:37,502 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:34:37,502 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 08:34:37,503 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 08:34:37,507 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 08:34:37,510 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 08:34:37,511 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 08:34:37,511 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 08:34:37,511 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 08:34:37,511 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 08:34:37,511 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 1 Supporting invariants [] [2018-11-18 08:34:37,511 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 08:34:37,521 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:37,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:37,524 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:37,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:37,528 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:37,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:34:37,569 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2018-11-18 08:34:37,569 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 24 transitions. cyclomatic complexity: 7 Second operand 6 states. [2018-11-18 08:34:37,622 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 24 transitions. cyclomatic complexity: 7. Second operand 6 states. Result 53 states and 68 transitions. Complement of second has 12 states. [2018-11-18 08:34:37,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2018-11-18 08:34:37,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-11-18 08:34:37,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 19 transitions. [2018-11-18 08:34:37,623 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 19 transitions. Stem has 3 letters. Loop has 7 letters. [2018-11-18 08:34:37,623 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:34:37,623 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 19 transitions. Stem has 10 letters. Loop has 7 letters. [2018-11-18 08:34:37,623 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:34:37,623 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 19 transitions. Stem has 3 letters. Loop has 14 letters. [2018-11-18 08:34:37,623 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:34:37,624 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 53 states and 68 transitions. [2018-11-18 08:34:37,626 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-18 08:34:37,627 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 53 states to 41 states and 52 transitions. [2018-11-18 08:34:37,627 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2018-11-18 08:34:37,627 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2018-11-18 08:34:37,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 52 transitions. [2018-11-18 08:34:37,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 08:34:37,627 INFO L705 BuchiCegarLoop]: Abstraction has 41 states and 52 transitions. [2018-11-18 08:34:37,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 52 transitions. [2018-11-18 08:34:37,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2018-11-18 08:34:37,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-18 08:34:37,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2018-11-18 08:34:37,631 INFO L728 BuchiCegarLoop]: Abstraction has 34 states and 44 transitions. [2018-11-18 08:34:37,631 INFO L608 BuchiCegarLoop]: Abstraction has 34 states and 44 transitions. [2018-11-18 08:34:37,631 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-18 08:34:37,631 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 44 transitions. [2018-11-18 08:34:37,632 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-18 08:34:37,632 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 08:34:37,632 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 08:34:37,633 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-18 08:34:37,633 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 1, 1, 1, 1] [2018-11-18 08:34:37,633 INFO L794 eck$LassoCheckResult]: Stem: 252#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 246#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~i~0, main_~j~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~n~0 := main_#t~nondet2;havoc main_#t~nondet2; 247#L19-3 assume true; 268#L19-1 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 267#L21-3 [2018-11-18 08:34:37,633 INFO L796 eck$LassoCheckResult]: Loop: 267#L21-3 assume true; 263#L21-1 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := 1 + main_~j~0; 256#L21-3 assume true; 257#L21-1 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := 1 + main_~j~0; 266#L21-3 assume true; 265#L21-1 assume !(main_~j~0 <= main_~i~0); 253#L21-4 main_~i~0 := 1 + main_~i~0; 248#L19-3 assume true; 249#L19-1 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 267#L21-3 [2018-11-18 08:34:37,633 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:37,634 INFO L82 PathProgramCache]: Analyzing trace with hash 925641, now seen corresponding path program 1 times [2018-11-18 08:34:37,634 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:37,634 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:37,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:37,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:37,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:37,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:37,639 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:37,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1698463761, now seen corresponding path program 2 times [2018-11-18 08:34:37,639 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:37,639 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:37,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:37,640 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:37,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:37,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:37,646 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:37,647 INFO L82 PathProgramCache]: Analyzing trace with hash -2004311769, now seen corresponding path program 2 times [2018-11-18 08:34:37,647 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:37,647 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:37,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:37,648 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 08:34:37,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:37,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:37,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:37,691 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 08:34:37,692 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 08:34:37,692 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 08:34:37,692 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 08:34:37,692 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 08:34:37,692 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:37,692 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 08:34:37,692 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 08:34:37,692 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-18 08:34:37,693 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 08:34:37,693 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 08:34:37,694 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:37,696 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:37,703 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:37,735 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 08:34:37,736 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3c6abcf2-e104-43ae-94fb-9458405ae05f/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:37,737 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:37,738 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:37,753 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:37,753 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3c6abcf2-e104-43ae-94fb-9458405ae05f/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:37,756 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:37,756 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3c6abcf2-e104-43ae-94fb-9458405ae05f/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:37,780 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 08:34:37,780 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:37,867 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 08:34:37,869 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 08:34:37,869 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 08:34:37,869 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 08:34:37,869 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 08:34:37,869 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 08:34:37,869 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:37,869 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 08:34:37,870 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 08:34:37,870 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-18 08:34:37,870 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 08:34:37,870 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 08:34:37,871 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:37,878 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:37,880 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:37,931 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 08:34:37,931 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 08:34:37,931 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 08:34:37,932 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:34:37,932 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 08:34:37,932 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:34:37,932 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:34:37,933 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:34:37,933 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 08:34:37,933 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 08:34:37,937 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 08:34:37,941 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-18 08:34:37,941 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 08:34:37,941 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 08:34:37,942 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 08:34:37,942 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 08:34:37,942 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 [] [2018-11-18 08:34:37,942 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 08:34:37,953 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:37,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:37,956 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:37,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:37,963 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:37,970 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 08:34:37,970 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-18 08:34:37,970 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 44 transitions. cyclomatic complexity: 13 Second operand 4 states. [2018-11-18 08:34:37,989 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 34 states and 44 transitions. cyclomatic complexity: 13. Second operand 4 states. Result 76 states and 98 transitions. Complement of second has 6 states. [2018-11-18 08:34:37,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 08:34:37,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 08:34:37,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-11-18 08:34:37,990 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 4 letters. Loop has 9 letters. [2018-11-18 08:34:37,990 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:34:37,990 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 13 letters. Loop has 9 letters. [2018-11-18 08:34:37,991 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:34:37,991 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 4 letters. Loop has 18 letters. [2018-11-18 08:34:37,991 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:34:37,991 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 76 states and 98 transitions. [2018-11-18 08:34:37,993 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-18 08:34:37,994 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 76 states to 53 states and 68 transitions. [2018-11-18 08:34:37,994 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-11-18 08:34:37,994 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2018-11-18 08:34:37,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 68 transitions. [2018-11-18 08:34:37,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 08:34:37,995 INFO L705 BuchiCegarLoop]: Abstraction has 53 states and 68 transitions. [2018-11-18 08:34:37,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states and 68 transitions. [2018-11-18 08:34:37,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2018-11-18 08:34:37,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-11-18 08:34:37,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 64 transitions. [2018-11-18 08:34:37,998 INFO L728 BuchiCegarLoop]: Abstraction has 49 states and 64 transitions. [2018-11-18 08:34:37,999 INFO L608 BuchiCegarLoop]: Abstraction has 49 states and 64 transitions. [2018-11-18 08:34:37,999 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-18 08:34:37,999 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 49 states and 64 transitions. [2018-11-18 08:34:38,000 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-18 08:34:38,000 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 08:34:38,000 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 08:34:38,000 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-11-18 08:34:38,000 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-18 08:34:38,001 INFO L794 eck$LassoCheckResult]: Stem: 423#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 418#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~i~0, main_~j~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~n~0 := main_#t~nondet2;havoc main_#t~nondet2; 419#L19-3 assume true; 421#L19-1 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 443#L21-3 assume true; 427#L21-1 [2018-11-18 08:34:38,001 INFO L796 eck$LassoCheckResult]: Loop: 427#L21-1 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := 1 + main_~j~0; 426#L21-3 assume true; 427#L21-1 [2018-11-18 08:34:38,001 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:38,001 INFO L82 PathProgramCache]: Analyzing trace with hash 28694887, now seen corresponding path program 1 times [2018-11-18 08:34:38,001 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:38,001 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:38,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:38,002 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 08:34:38,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:38,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:38,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:38,006 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:38,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1659, now seen corresponding path program 1 times [2018-11-18 08:34:38,006 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:38,006 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:38,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:38,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:38,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:38,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:38,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:38,010 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:38,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1805983329, now seen corresponding path program 1 times [2018-11-18 08:34:38,010 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:38,011 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:38,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:38,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:38,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:38,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:38,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:38,025 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 08:34:38,025 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 08:34:38,025 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 08:34:38,025 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 08:34:38,025 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 08:34:38,025 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:38,025 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 08:34:38,025 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 08:34:38,026 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-18 08:34:38,026 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 08:34:38,026 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 08:34:38,027 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:38,029 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:38,034 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:38,057 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 08:34:38,057 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3c6abcf2-e104-43ae-94fb-9458405ae05f/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:38,060 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:38,061 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:38,076 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:38,076 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3c6abcf2-e104-43ae-94fb-9458405ae05f/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:38,079 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:38,079 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:38,094 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:38,094 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3c6abcf2-e104-43ae-94fb-9458405ae05f/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:38,109 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:38,110 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3c6abcf2-e104-43ae-94fb-9458405ae05f/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:38,128 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 08:34:38,128 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:38,230 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 08:34:38,231 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 08:34:38,231 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 08:34:38,231 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 08:34:38,231 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 08:34:38,231 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 08:34:38,231 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:38,231 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 08:34:38,231 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 08:34:38,231 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-18 08:34:38,232 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 08:34:38,232 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 08:34:38,233 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:38,236 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:38,237 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:38,255 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 08:34:38,255 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 08:34:38,256 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 08:34:38,256 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:34:38,256 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:34:38,256 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:34:38,256 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:34:38,257 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 08:34:38,258 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 08:34:38,261 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 08:34:38,261 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 08:34:38,261 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:34:38,262 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:34:38,262 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:34:38,262 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:34:38,263 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 08:34:38,263 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 08:34:38,265 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 08:34:38,265 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 08:34:38,266 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:34:38,266 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 08:34:38,266 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:34:38,266 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:34:38,266 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:34:38,266 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 08:34:38,266 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 08:34:38,268 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 08:34:38,270 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 08:34:38,270 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 08:34:38,270 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 08:34:38,271 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 08:34:38,271 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 08:34:38,271 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0, ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~j~0 + 2*ULTIMATE.start_main_~i~0 + 1 Supporting invariants [] [2018-11-18 08:34:38,271 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 08:34:38,282 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:38,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:38,284 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:38,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:38,286 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:38,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:34:38,294 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-18 08:34:38,294 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 49 states and 64 transitions. cyclomatic complexity: 20 Second operand 3 states. [2018-11-18 08:34:38,300 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 49 states and 64 transitions. cyclomatic complexity: 20. Second operand 3 states. Result 84 states and 104 transitions. Complement of second has 5 states. [2018-11-18 08:34:38,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-18 08:34:38,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 08:34:38,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2018-11-18 08:34:38,302 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 5 letters. Loop has 2 letters. [2018-11-18 08:34:38,302 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:34:38,303 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 2 letters. [2018-11-18 08:34:38,303 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:34:38,303 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 5 letters. Loop has 4 letters. [2018-11-18 08:34:38,303 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:34:38,303 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 104 transitions. [2018-11-18 08:34:38,304 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-18 08:34:38,305 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 74 states and 93 transitions. [2018-11-18 08:34:38,305 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2018-11-18 08:34:38,305 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2018-11-18 08:34:38,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 74 states and 93 transitions. [2018-11-18 08:34:38,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 08:34:38,305 INFO L705 BuchiCegarLoop]: Abstraction has 74 states and 93 transitions. [2018-11-18 08:34:38,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states and 93 transitions. [2018-11-18 08:34:38,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 67. [2018-11-18 08:34:38,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-11-18 08:34:38,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 86 transitions. [2018-11-18 08:34:38,308 INFO L728 BuchiCegarLoop]: Abstraction has 67 states and 86 transitions. [2018-11-18 08:34:38,308 INFO L608 BuchiCegarLoop]: Abstraction has 67 states and 86 transitions. [2018-11-18 08:34:38,308 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-18 08:34:38,309 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 67 states and 86 transitions. [2018-11-18 08:34:38,309 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-18 08:34:38,310 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 08:34:38,310 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 08:34:38,310 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1] [2018-11-18 08:34:38,310 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-18 08:34:38,310 INFO L794 eck$LassoCheckResult]: Stem: 599#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 593#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~i~0, main_~j~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~n~0 := main_#t~nondet2;havoc main_#t~nondet2; 594#L19-3 assume true; 595#L19-1 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 659#L21-3 assume true; 658#L21-1 assume !(main_~j~0 <= main_~i~0); 620#L21-4 main_~i~0 := 1 + main_~i~0; 616#L19-3 assume true; 614#L19-1 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 611#L21-3 assume true; 609#L21-1 [2018-11-18 08:34:38,310 INFO L796 eck$LassoCheckResult]: Loop: 609#L21-1 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := 1 + main_~j~0; 610#L21-3 assume true; 609#L21-1 [2018-11-18 08:34:38,310 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:38,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1007505731, now seen corresponding path program 2 times [2018-11-18 08:34:38,311 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:38,311 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:38,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:38,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:38,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:38,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:38,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:38,316 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:38,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1659, now seen corresponding path program 2 times [2018-11-18 08:34:38,316 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:38,316 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:38,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:38,317 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 08:34:38,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:38,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:38,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:38,319 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:38,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1845365193, now seen corresponding path program 3 times [2018-11-18 08:34:38,319 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:38,319 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:38,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:38,320 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 08:34:38,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:38,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:38,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:38,347 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 08:34:38,347 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 08:34:38,347 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 08:34:38,347 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 08:34:38,347 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 08:34:38,347 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:38,347 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 08:34:38,347 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 08:34:38,347 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1_true-termination_true-no-overflow.c_Iteration6_Loop [2018-11-18 08:34:38,347 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 08:34:38,347 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 08:34:38,348 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:38,367 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:38,369 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:38,386 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 08:34:38,386 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3c6abcf2-e104-43ae-94fb-9458405ae05f/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:38,389 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:38,389 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3c6abcf2-e104-43ae-94fb-9458405ae05f/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:38,405 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 08:34:38,405 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:38,507 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 08:34:38,509 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 08:34:38,509 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 08:34:38,509 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 08:34:38,509 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 08:34:38,509 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 08:34:38,509 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:38,509 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 08:34:38,509 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 08:34:38,509 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1_true-termination_true-no-overflow.c_Iteration6_Loop [2018-11-18 08:34:38,509 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 08:34:38,509 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 08:34:38,510 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:38,514 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:38,515 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:38,535 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 08:34:38,535 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 08:34:38,535 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 08:34:38,536 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:34:38,536 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 08:34:38,536 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:34:38,536 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:34:38,536 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:34:38,536 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 08:34:38,536 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 08:34:38,538 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 08:34:38,539 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 08:34:38,539 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 08:34:38,540 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 08:34:38,540 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 08:34:38,540 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 08:34:38,540 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0, ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~j~0 + 2*ULTIMATE.start_main_~i~0 + 1 Supporting invariants [] [2018-11-18 08:34:38,540 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 08:34:38,549 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:38,551 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:38,554 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:38,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:34:38,563 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-18 08:34:38,563 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 67 states and 86 transitions. cyclomatic complexity: 27 Second operand 3 states. [2018-11-18 08:34:38,570 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 67 states and 86 transitions. cyclomatic complexity: 27. Second operand 3 states. Result 84 states and 105 transitions. Complement of second has 5 states. [2018-11-18 08:34:38,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-18 08:34:38,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 08:34:38,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2018-11-18 08:34:38,572 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 10 letters. Loop has 2 letters. [2018-11-18 08:34:38,572 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:34:38,572 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 08:34:38,584 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:38,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:38,587 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:38,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:38,589 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:38,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:34:38,596 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 [2018-11-18 08:34:38,596 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 67 states and 86 transitions. cyclomatic complexity: 27 Second operand 3 states. [2018-11-18 08:34:38,608 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 67 states and 86 transitions. cyclomatic complexity: 27. Second operand 3 states. Result 82 states and 102 transitions. Complement of second has 7 states. [2018-11-18 08:34:38,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 08:34:38,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 08:34:38,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2018-11-18 08:34:38,611 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 10 letters. Loop has 2 letters. [2018-11-18 08:34:38,611 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:34:38,611 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 08:34:38,618 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:38,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:38,620 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:38,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:38,622 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:38,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:34:38,635 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 [2018-11-18 08:34:38,635 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 67 states and 86 transitions. cyclomatic complexity: 27 Second operand 3 states. [2018-11-18 08:34:38,642 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 67 states and 86 transitions. cyclomatic complexity: 27. Second operand 3 states. Result 90 states and 116 transitions. Complement of second has 6 states. [2018-11-18 08:34:38,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-18 08:34:38,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 08:34:38,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2018-11-18 08:34:38,642 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 10 letters. Loop has 2 letters. [2018-11-18 08:34:38,643 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:34:38,643 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 12 letters. Loop has 2 letters. [2018-11-18 08:34:38,643 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:34:38,643 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 10 letters. Loop has 4 letters. [2018-11-18 08:34:38,643 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:34:38,643 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 90 states and 116 transitions. [2018-11-18 08:34:38,644 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 08:34:38,644 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 90 states to 0 states and 0 transitions. [2018-11-18 08:34:38,644 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-18 08:34:38,644 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-18 08:34:38,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-18 08:34:38,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 08:34:38,644 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 08:34:38,645 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 08:34:38,645 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 08:34:38,645 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-11-18 08:34:38,645 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-18 08:34:38,645 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 08:34:38,645 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-18 08:34:38,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.11 08:34:38 BoogieIcfgContainer [2018-11-18 08:34:38,650 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-18 08:34:38,651 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 08:34:38,651 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 08:34:38,651 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 08:34:38,651 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:34:36" (3/4) ... [2018-11-18 08:34:38,653 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 08:34:38,654 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 08:34:38,654 INFO L168 Benchmark]: Toolchain (without parser) took 2690.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 958.2 MB in the beginning and 1.0 GB in the end (delta: -91.3 MB). Peak memory consumption was 47.6 MB. Max. memory is 11.5 GB. [2018-11-18 08:34:38,655 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:34:38,655 INFO L168 Benchmark]: CACSL2BoogieTranslator took 136.25 ms. Allocated memory is still 1.0 GB. Free memory was 958.2 MB in the beginning and 947.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 08:34:38,656 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.01 ms. Allocated memory is still 1.0 GB. Free memory was 947.4 MB in the beginning and 944.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 08:34:38,656 INFO L168 Benchmark]: Boogie Preprocessor took 10.45 ms. Allocated memory is still 1.0 GB. Free memory is still 944.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:34:38,656 INFO L168 Benchmark]: RCFGBuilder took 174.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -177.4 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-11-18 08:34:38,657 INFO L168 Benchmark]: BuchiAutomizer took 2345.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 72.7 MB). Peak memory consumption was 72.7 MB. Max. memory is 11.5 GB. [2018-11-18 08:34:38,657 INFO L168 Benchmark]: Witness Printer took 3.06 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:34:38,659 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 136.25 ms. Allocated memory is still 1.0 GB. Free memory was 958.2 MB in the beginning and 947.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.01 ms. Allocated memory is still 1.0 GB. Free memory was 947.4 MB in the beginning and 944.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.45 ms. Allocated memory is still 1.0 GB. Free memory is still 944.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 174.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -177.4 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2345.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 72.7 MB). Peak memory consumption was 72.7 MB. Max. memory is 11.5 GB. * Witness Printer took 3.06 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (1 trivial, 4 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * i and consists of 5 locations. One deterministic module has affine ranking function -2 * i + 1 and consists of 7 locations. One deterministic module has affine ranking function -1 * i + n and consists of 4 locations. One deterministic module has affine ranking function -2 * j + 2 * i + 1 and consists of 3 locations. One nondeterministic module has affine ranking function -2 * j + 2 * i + 1 and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 2 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.3s and 7 iterations. TraceHistogramMax:3. Analysis of lassos took 1.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 19 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 67 states and ocurred in iteration 5. Nontrivial modules had stage [4, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 6/8 HoareTripleCheckerStatistics: 54 SDtfs, 54 SDslu, 20 SDs, 0 SdLazy, 66 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT5 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax184 hnf98 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq155 hnf93 smp97 dnf100 smp100 tf109 neg100 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 10ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...