./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/UpAndDown.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/UpAndDown.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/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 014f994c3374ea132faaa71956bb80ddfc4c8f9b 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Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:50:58,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:50:58,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:50:58,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:50:58,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:50:58,400 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:50:58,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:50:58,410 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:50:58,414 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:50:58,418 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:50:58,419 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:50:58,420 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:50:58,421 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:50:58,423 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:50:58,424 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:50:58,425 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:50:58,426 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:50:58,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:50:58,429 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:50:58,432 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:50:58,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:50:58,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:50:58,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:50:58,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:50:58,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:50:58,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:50:58,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:50:58,447 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:50:58,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:50:58,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:50:58,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:50:58,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:50:58,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:50:58,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:50:58,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:50:58,452 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:50:58,452 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:50:58,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:50:58,453 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:50:58,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:50:58,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:50:58,456 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-25 08:50:58,481 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:50:58,490 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:50:58,491 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:50:58,491 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:50:58,491 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:50:58,492 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-25 08:50:58,492 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-25 08:50:58,492 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-25 08:50:58,492 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-25 08:50:58,492 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-25 08:50:58,492 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-25 08:50:58,493 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:50:58,493 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:50:58,493 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:50:58,493 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:50:58,493 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-25 08:50:58,494 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-25 08:50:58,494 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-25 08:50:58,494 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:50:58,494 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-25 08:50:58,494 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:50:58,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-25 08:50:58,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:50:58,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:50:58,495 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-25 08:50:58,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:50:58,495 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:50:58,496 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-25 08:50:58,496 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-25 08:50:58,497 INFO L138 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/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/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 -> 014f994c3374ea132faaa71956bb80ddfc4c8f9b [2019-11-25 08:50:58,650 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:50:58,660 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:50:58,663 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:50:58,664 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:50:58,666 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:50:58,667 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/UpAndDown.c [2019-11-25 08:50:58,721 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/data/ad427e4d7/5844b8a7e382449fa43839349e261b74/FLAGf81222a88 [2019-11-25 08:50:59,072 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:50:59,073 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/sv-benchmarks/c/termination-restricted-15/UpAndDown.c [2019-11-25 08:50:59,077 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/data/ad427e4d7/5844b8a7e382449fa43839349e261b74/FLAGf81222a88 [2019-11-25 08:50:59,086 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/data/ad427e4d7/5844b8a7e382449fa43839349e261b74 [2019-11-25 08:50:59,088 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:50:59,090 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:50:59,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:50:59,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:50:59,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:50:59,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:50:59" (1/1) ... [2019-11-25 08:50:59,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15e611fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:59, skipping insertion in model container [2019-11-25 08:50:59,099 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:50:59" (1/1) ... [2019-11-25 08:50:59,106 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:50:59,120 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:50:59,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:50:59,293 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:50:59,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:50:59,392 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:50:59,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:59 WrapperNode [2019-11-25 08:50:59,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:50:59,395 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:50:59,395 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:50:59,395 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:50:59,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:59" (1/1) ... [2019-11-25 08:50:59,410 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:59" (1/1) ... [2019-11-25 08:50:59,429 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:50:59,429 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:50:59,429 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:50:59,430 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:50:59,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:59" (1/1) ... [2019-11-25 08:50:59,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:59" (1/1) ... [2019-11-25 08:50:59,439 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:59" (1/1) ... [2019-11-25 08:50:59,439 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:59" (1/1) ... [2019-11-25 08:50:59,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:59" (1/1) ... [2019-11-25 08:50:59,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:59" (1/1) ... [2019-11-25 08:50:59,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:59" (1/1) ... [2019-11-25 08:50:59,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:50:59,449 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:50:59,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:50:59,450 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:50:59,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/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 [2019-11-25 08:50:59,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:50:59,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:50:59,633 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:50:59,633 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-25 08:50:59,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:50:59 BoogieIcfgContainer [2019-11-25 08:50:59,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:50:59,635 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-25 08:50:59,635 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-25 08:50:59,637 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-25 08:50:59,638 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:50:59,638 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 25.11 08:50:59" (1/3) ... [2019-11-25 08:50:59,639 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@240af022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:50:59, skipping insertion in model container [2019-11-25 08:50:59,639 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:50:59,639 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:59" (2/3) ... [2019-11-25 08:50:59,640 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@240af022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:50:59, skipping insertion in model container [2019-11-25 08:50:59,640 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:50:59,640 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:50:59" (3/3) ... [2019-11-25 08:50:59,641 INFO L371 chiAutomizerObserver]: Analyzing ICFG UpAndDown.c [2019-11-25 08:50:59,681 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-25 08:50:59,682 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-25 08:50:59,682 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-25 08:50:59,682 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:50:59,682 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:50:59,682 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-25 08:50:59,682 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:50:59,682 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-25 08:50:59,695 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2019-11-25 08:50:59,714 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-25 08:50:59,714 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:50:59,714 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:50:59,719 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-25 08:50:59,719 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:50:59,720 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-25 08:50:59,720 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2019-11-25 08:50:59,720 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-25 08:50:59,721 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:50:59,721 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:50:59,721 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-25 08:50:59,721 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:50:59,727 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 5#L18-1true [2019-11-25 08:50:59,727 INFO L796 eck$LassoCheckResult]: Loop: 5#L18-1true assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6#L12true assume 10 == main_~i~0;main_~up~0 := 0; 3#L12-2true assume 0 == main_~i~0;main_~up~0 := 1; 9#L15-1true assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5#L18-1true [2019-11-25 08:50:59,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:59,731 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-25 08:50:59,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:59,738 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360646662] [2019-11-25 08:50:59,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:59,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:59,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:59,814 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:50:59,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:59,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1234538, now seen corresponding path program 1 times [2019-11-25 08:50:59,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:59,816 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857171816] [2019-11-25 08:50:59,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:59,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:59,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:59,866 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857171816] [2019-11-25 08:50:59,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:50:59,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-25 08:50:59,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307240748] [2019-11-25 08:50:59,873 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-25 08:50:59,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:50:59,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:50:59,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:50:59,886 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2019-11-25 08:50:59,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:50:59,945 INFO L93 Difference]: Finished difference Result 17 states and 22 transitions. [2019-11-25 08:50:59,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:50:59,947 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 22 transitions. [2019-11-25 08:50:59,949 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-11-25 08:50:59,954 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 9 states and 14 transitions. [2019-11-25 08:50:59,955 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2019-11-25 08:50:59,958 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2019-11-25 08:50:59,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 14 transitions. [2019-11-25 08:50:59,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:50:59,960 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2019-11-25 08:50:59,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 14 transitions. [2019-11-25 08:50:59,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-25 08:50:59,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-25 08:50:59,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 14 transitions. [2019-11-25 08:50:59,999 INFO L711 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2019-11-25 08:50:59,999 INFO L591 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2019-11-25 08:50:59,999 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-25 08:51:00,000 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 14 transitions. [2019-11-25 08:51:00,001 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-11-25 08:51:00,001 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:51:00,001 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:51:00,001 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-25 08:51:00,002 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:51:00,002 INFO L794 eck$LassoCheckResult]: Stem: 37#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 38#L18-1 [2019-11-25 08:51:00,002 INFO L796 eck$LassoCheckResult]: Loop: 38#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 43#L12 assume 10 == main_~i~0;main_~up~0 := 0; 35#L12-2 assume !(0 == main_~i~0); 36#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 38#L18-1 [2019-11-25 08:51:00,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:00,002 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2019-11-25 08:51:00,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:00,003 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271961346] [2019-11-25 08:51:00,003 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:00,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:00,009 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:00,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:00,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1234602, now seen corresponding path program 1 times [2019-11-25 08:51:00,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:00,010 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753588521] [2019-11-25 08:51:00,010 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:00,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:00,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:00,033 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:00,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:00,033 INFO L82 PathProgramCache]: Analyzing trace with hash 29863753, now seen corresponding path program 1 times [2019-11-25 08:51:00,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:00,034 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139829948] [2019-11-25 08:51:00,034 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:00,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:00,046 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:00,096 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:00,097 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:00,097 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:00,097 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:00,097 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:51:00,097 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:00,098 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:00,098 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:00,098 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration2_Loop [2019-11-25 08:51:00,098 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:00,098 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:00,117 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:00,134 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:00,139 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:00,143 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:00,232 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:00,233 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:00,246 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:00,246 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:00,257 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:51:00,257 INFO L440 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/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:00,265 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:00,265 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:00,270 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:51:00,270 INFO L440 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/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:00,277 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:00,277 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:00,286 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:51:00,286 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=0} Honda state: {ULTIMATE.start_main_~up~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:00,298 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:00,298 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:00,323 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:51:00,323 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:00,332 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:51:00,334 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:00,334 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:00,334 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:00,335 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:00,335 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:51:00,335 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:00,335 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:00,335 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:00,335 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration2_Loop [2019-11-25 08:51:00,335 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:00,335 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:00,337 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:00,343 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:00,349 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:00,353 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:00,437 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:00,442 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:00,449 INFO L120 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 [2019-11-25 08:51:00,451 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:00,452 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:00,452 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:00,452 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:00,461 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:51:00,462 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:00,470 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Exception during sending of exit command (exit): Broken pipe No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:00,492 INFO L120 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 [2019-11-25 08:51:00,494 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:00,494 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:00,494 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:00,494 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:00,500 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:51:00,500 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:51:00,505 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/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 [2019-11-25 08:51:00,514 INFO L120 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 [2019-11-25 08:51:00,515 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:00,516 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:51:00,516 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:00,516 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:00,516 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:00,518 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:51:00,518 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:51:00,520 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/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 [2019-11-25 08:51:00,535 INFO L120 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 [2019-11-25 08:51:00,537 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:00,537 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:51:00,537 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:00,537 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:00,538 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:00,539 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:51:00,539 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:51:00,541 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:51:00,545 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:51:00,545 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/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 [2019-11-25 08:51:00,574 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:51:00,574 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:51:00,574 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:51:00,575 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-25 08:51:00,579 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:51:00,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:00,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:00,620 INFO L255 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:51:00,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:00,631 INFO L255 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:51:00,631 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:00,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:00,648 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 [2019-11-25 08:51:00,648 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 6 Second operand 3 states. [2019-11-25 08:51:00,707 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 21 states and 32 transitions. Complement of second has 5 states. [2019-11-25 08:51:00,709 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 [2019-11-25 08:51:00,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:51:00,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-11-25 08:51:00,711 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 1 letters. Loop has 4 letters. [2019-11-25 08:51:00,712 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:00,712 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 4 letters. [2019-11-25 08:51:00,713 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:00,713 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 1 letters. Loop has 8 letters. [2019-11-25 08:51:00,713 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:00,713 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 32 transitions. [2019-11-25 08:51:00,715 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-11-25 08:51:00,716 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 21 states and 32 transitions. [2019-11-25 08:51:00,716 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2019-11-25 08:51:00,716 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2019-11-25 08:51:00,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 32 transitions. [2019-11-25 08:51:00,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:00,717 INFO L688 BuchiCegarLoop]: Abstraction has 21 states and 32 transitions. [2019-11-25 08:51:00,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 32 transitions. [2019-11-25 08:51:00,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2019-11-25 08:51:00,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-25 08:51:00,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 31 transitions. [2019-11-25 08:51:00,724 INFO L711 BuchiCegarLoop]: Abstraction has 20 states and 31 transitions. [2019-11-25 08:51:00,724 INFO L591 BuchiCegarLoop]: Abstraction has 20 states and 31 transitions. [2019-11-25 08:51:00,724 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-25 08:51:00,724 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 31 transitions. [2019-11-25 08:51:00,725 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-11-25 08:51:00,726 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:51:00,726 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:51:00,726 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-25 08:51:00,726 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:51:00,726 INFO L794 eck$LassoCheckResult]: Stem: 105#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 106#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 110#L12 assume 10 == main_~i~0;main_~up~0 := 0; 112#L12-2 assume !(0 == main_~i~0); 120#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 107#L18-1 [2019-11-25 08:51:00,727 INFO L796 eck$LassoCheckResult]: Loop: 107#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 108#L12 assume 10 == main_~i~0;main_~up~0 := 0; 117#L12-2 assume !(0 == main_~i~0); 118#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 107#L18-1 [2019-11-25 08:51:00,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:00,727 INFO L82 PathProgramCache]: Analyzing trace with hash 29863751, now seen corresponding path program 1 times [2019-11-25 08:51:00,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:00,727 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993094817] [2019-11-25 08:51:00,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:00,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:00,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:00,759 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993094817] [2019-11-25 08:51:00,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:51:00,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:51:00,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305344412] [2019-11-25 08:51:00,759 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-25 08:51:00,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:00,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1234600, now seen corresponding path program 1 times [2019-11-25 08:51:00,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:00,760 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188496666] [2019-11-25 08:51:00,760 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:00,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:00,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:00,772 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188496666] [2019-11-25 08:51:00,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:51:00,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:51:00,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714496297] [2019-11-25 08:51:00,773 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-25 08:51:00,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:51:00,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:51:00,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:51:00,774 INFO L87 Difference]: Start difference. First operand 20 states and 31 transitions. cyclomatic complexity: 13 Second operand 3 states. [2019-11-25 08:51:00,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:51:00,782 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2019-11-25 08:51:00,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:51:00,783 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 43 transitions. [2019-11-25 08:51:00,784 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2019-11-25 08:51:00,785 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 26 states and 39 transitions. [2019-11-25 08:51:00,785 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2019-11-25 08:51:00,785 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2019-11-25 08:51:00,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 39 transitions. [2019-11-25 08:51:00,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:00,786 INFO L688 BuchiCegarLoop]: Abstraction has 26 states and 39 transitions. [2019-11-25 08:51:00,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 39 transitions. [2019-11-25 08:51:00,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2019-11-25 08:51:00,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-25 08:51:00,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 38 transitions. [2019-11-25 08:51:00,789 INFO L711 BuchiCegarLoop]: Abstraction has 25 states and 38 transitions. [2019-11-25 08:51:00,789 INFO L591 BuchiCegarLoop]: Abstraction has 25 states and 38 transitions. [2019-11-25 08:51:00,789 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-25 08:51:00,790 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 38 transitions. [2019-11-25 08:51:00,790 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2019-11-25 08:51:00,791 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:51:00,791 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:51:00,791 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-25 08:51:00,791 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:51:00,791 INFO L794 eck$LassoCheckResult]: Stem: 161#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 162#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 166#L12 assume !(10 == main_~i~0); 168#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 172#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 173#L18-1 [2019-11-25 08:51:00,792 INFO L796 eck$LassoCheckResult]: Loop: 173#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 178#L12 assume !(10 == main_~i~0); 176#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 174#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 173#L18-1 [2019-11-25 08:51:00,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:00,792 INFO L82 PathProgramCache]: Analyzing trace with hash 29865611, now seen corresponding path program 1 times [2019-11-25 08:51:00,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:00,792 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371487774] [2019-11-25 08:51:00,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:00,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:00,801 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:00,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:00,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1236460, now seen corresponding path program 1 times [2019-11-25 08:51:00,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:00,802 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698410431] [2019-11-25 08:51:00,802 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:00,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:00,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:00,811 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:00,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:00,811 INFO L82 PathProgramCache]: Analyzing trace with hash -760725642, now seen corresponding path program 2 times [2019-11-25 08:51:00,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:00,812 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118295197] [2019-11-25 08:51:00,812 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:00,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:00,853 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:00,853 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118295197] [2019-11-25 08:51:00,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:51:00,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:51:00,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511453970] [2019-11-25 08:51:00,876 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:00,876 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:00,876 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:00,876 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:00,876 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:51:00,876 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:00,876 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:00,877 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:00,877 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration4_Loop [2019-11-25 08:51:00,877 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:00,877 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:00,878 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:00,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:00,883 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:00,893 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:00,955 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:00,955 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:00,966 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:00,967 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:00,974 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:51:00,974 INFO L440 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/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/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 [2019-11-25 08:51:00,989 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:00,989 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:51:00,996 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:51:00,997 INFO L440 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/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:01,018 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:01,019 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:01,024 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:51:01,024 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=1} Honda state: {ULTIMATE.start_main_~up~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:01,038 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:01,038 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:01,058 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:51:01,059 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:01,065 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:51:01,067 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:01,067 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:01,068 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:01,068 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:01,068 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:51:01,068 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:01,068 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:01,068 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:01,068 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration4_Loop [2019-11-25 08:51:01,068 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:01,068 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:01,070 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:01,076 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:01,080 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:01,093 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:01,155 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:01,156 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:01,174 INFO L120 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 [2019-11-25 08:51:01,176 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:01,177 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:01,177 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:01,177 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:01,183 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:51:01,183 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:51:01,190 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:01,198 INFO L120 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 [2019-11-25 08:51:01,200 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:01,200 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:01,200 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:01,200 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:01,213 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:51:01,214 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:01,221 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:01,230 INFO L120 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 [2019-11-25 08:51:01,232 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:01,232 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:51:01,232 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:01,232 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:01,233 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:01,235 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:51:01,235 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:01,241 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:51:01,244 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:51:01,244 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:01,249 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:51:01,249 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:51:01,249 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:51:01,250 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 1 Supporting invariants [] [2019-11-25 08:51:01,252 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:01,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:01,287 INFO L255 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:51:01,288 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:01,298 INFO L255 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:51:01,298 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:01,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:01,311 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 [2019-11-25 08:51:01,312 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 38 transitions. cyclomatic complexity: 15 Second operand 4 states. [2019-11-25 08:51:01,355 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 38 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 42 states and 62 transitions. Complement of second has 7 states. [2019-11-25 08:51:01,357 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 [2019-11-25 08:51:01,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:51:01,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2019-11-25 08:51:01,358 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 4 letters. [2019-11-25 08:51:01,358 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:01,358 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 9 letters. Loop has 4 letters. [2019-11-25 08:51:01,359 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:01,359 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 8 letters. [2019-11-25 08:51:01,359 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:01,359 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 62 transitions. [2019-11-25 08:51:01,361 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2019-11-25 08:51:01,362 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 40 states and 60 transitions. [2019-11-25 08:51:01,362 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2019-11-25 08:51:01,362 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2019-11-25 08:51:01,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 60 transitions. [2019-11-25 08:51:01,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:01,363 INFO L688 BuchiCegarLoop]: Abstraction has 40 states and 60 transitions. [2019-11-25 08:51:01,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states and 60 transitions. [2019-11-25 08:51:01,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2019-11-25 08:51:01,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-25 08:51:01,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 56 transitions. [2019-11-25 08:51:01,372 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 56 transitions. [2019-11-25 08:51:01,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:51:01,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:51:01,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:51:01,374 INFO L87 Difference]: Start difference. First operand 37 states and 56 transitions. Second operand 4 states. [2019-11-25 08:51:01,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:51:01,404 INFO L93 Difference]: Finished difference Result 42 states and 61 transitions. [2019-11-25 08:51:01,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:51:01,405 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 61 transitions. [2019-11-25 08:51:01,407 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 18 [2019-11-25 08:51:01,408 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 38 states and 56 transitions. [2019-11-25 08:51:01,408 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2019-11-25 08:51:01,409 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2019-11-25 08:51:01,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 56 transitions. [2019-11-25 08:51:01,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:01,409 INFO L688 BuchiCegarLoop]: Abstraction has 38 states and 56 transitions. [2019-11-25 08:51:01,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 56 transitions. [2019-11-25 08:51:01,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2019-11-25 08:51:01,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-25 08:51:01,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 42 transitions. [2019-11-25 08:51:01,413 INFO L711 BuchiCegarLoop]: Abstraction has 28 states and 42 transitions. [2019-11-25 08:51:01,413 INFO L591 BuchiCegarLoop]: Abstraction has 28 states and 42 transitions. [2019-11-25 08:51:01,413 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-25 08:51:01,419 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 42 transitions. [2019-11-25 08:51:01,420 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2019-11-25 08:51:01,420 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:51:01,420 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:51:01,420 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-25 08:51:01,421 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:51:01,421 INFO L794 eck$LassoCheckResult]: Stem: 360#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 361#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 365#L12 assume !(10 == main_~i~0); 367#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 374#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 362#L18-1 [2019-11-25 08:51:01,421 INFO L796 eck$LassoCheckResult]: Loop: 362#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 363#L12 assume !(10 == main_~i~0); 356#L12-2 assume !(0 == main_~i~0); 357#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 362#L18-1 [2019-11-25 08:51:01,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:01,421 INFO L82 PathProgramCache]: Analyzing trace with hash 29865611, now seen corresponding path program 3 times [2019-11-25 08:51:01,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:01,422 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848416561] [2019-11-25 08:51:01,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:01,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:01,438 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:01,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:01,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1236522, now seen corresponding path program 1 times [2019-11-25 08:51:01,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:01,439 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874591374] [2019-11-25 08:51:01,439 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:01,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:01,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:01,455 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:01,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:01,455 INFO L82 PathProgramCache]: Analyzing trace with hash -760725580, now seen corresponding path program 1 times [2019-11-25 08:51:01,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:01,455 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767497040] [2019-11-25 08:51:01,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:01,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:01,478 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:01,507 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:01,507 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:01,507 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:01,508 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:01,508 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:51:01,508 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:01,508 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:01,508 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:01,508 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration5_Loop [2019-11-25 08:51:01,508 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:01,508 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:01,510 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:01,514 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:01,517 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:01,523 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:01,622 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:01,622 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:01,627 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:01,627 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:01,633 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:51:01,633 INFO L440 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/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:01,643 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:01,643 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:51:01,662 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:51:01,662 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=1} Honda state: {ULTIMATE.start_main_~up~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:01,679 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:01,679 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:01,684 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:51:01,684 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:01,690 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:01,690 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:01,701 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:51:01,701 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:01,708 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:51:01,710 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:01,710 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:01,710 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:01,710 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:01,711 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:51:01,711 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:01,711 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:01,711 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:01,711 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration5_Loop [2019-11-25 08:51:01,711 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:01,711 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:01,713 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:01,718 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:01,723 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:01,737 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:01,840 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:01,840 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:01,849 INFO L120 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 [2019-11-25 08:51:01,851 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:01,851 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:51:01,851 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:01,852 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:01,852 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:01,852 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:51:01,852 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:01,854 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 27 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:01,858 INFO L120 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 [2019-11-25 08:51:01,859 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:01,860 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:01,860 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:01,860 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:01,862 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:51:01,862 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:51:01,869 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:01,878 INFO L120 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 [2019-11-25 08:51:01,880 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:01,880 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:51:01,880 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:01,880 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:01,880 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:01,882 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:51:01,882 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:01,885 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:51:01,888 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:51:01,888 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:01,892 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:51:01,892 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:51:01,892 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:51:01,892 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 19 Supporting invariants [] [2019-11-25 08:51:01,894 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:01,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:01,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:01,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:51:01,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:01,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:01,926 WARN L253 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:51:01,926 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:01,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:01,961 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 [2019-11-25 08:51:01,961 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 42 transitions. cyclomatic complexity: 16 Second operand 4 states. [2019-11-25 08:51:01,991 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 42 transitions. cyclomatic complexity: 16. Second operand 4 states. Result 40 states and 57 transitions. Complement of second has 7 states. [2019-11-25 08:51:01,991 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 [2019-11-25 08:51:01,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:51:01,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2019-11-25 08:51:01,992 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 5 letters. Loop has 4 letters. [2019-11-25 08:51:01,992 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:01,992 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 9 letters. Loop has 4 letters. [2019-11-25 08:51:01,993 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:01,993 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 5 letters. Loop has 8 letters. [2019-11-25 08:51:01,993 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:01,993 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 57 transitions. [2019-11-25 08:51:01,994 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2019-11-25 08:51:01,995 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 38 states and 55 transitions. [2019-11-25 08:51:01,995 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2019-11-25 08:51:01,995 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2019-11-25 08:51:01,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 55 transitions. [2019-11-25 08:51:01,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:01,996 INFO L688 BuchiCegarLoop]: Abstraction has 38 states and 55 transitions. [2019-11-25 08:51:01,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 55 transitions. [2019-11-25 08:51:01,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2019-11-25 08:51:01,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-25 08:51:01,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 53 transitions. [2019-11-25 08:51:01,999 INFO L711 BuchiCegarLoop]: Abstraction has 36 states and 53 transitions. [2019-11-25 08:51:01,999 INFO L591 BuchiCegarLoop]: Abstraction has 36 states and 53 transitions. [2019-11-25 08:51:01,999 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-25 08:51:01,999 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 53 transitions. [2019-11-25 08:51:02,000 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2019-11-25 08:51:02,000 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:51:02,000 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:51:02,001 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2019-11-25 08:51:02,001 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:51:02,001 INFO L794 eck$LassoCheckResult]: Stem: 480#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 481#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 485#L12 assume !(10 == main_~i~0); 501#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 500#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 499#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 487#L12 assume 10 == main_~i~0;main_~up~0 := 0; 476#L12-2 [2019-11-25 08:51:02,001 INFO L796 eck$LassoCheckResult]: Loop: 476#L12-2 assume !(0 == main_~i~0); 477#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 511#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 509#L12 assume 10 == main_~i~0;main_~up~0 := 0; 476#L12-2 [2019-11-25 08:51:02,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:02,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1363918578, now seen corresponding path program 1 times [2019-11-25 08:51:02,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:02,002 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182047459] [2019-11-25 08:51:02,002 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:02,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:02,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:02,036 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182047459] [2019-11-25 08:51:02,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:51:02,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-25 08:51:02,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102896822] [2019-11-25 08:51:02,037 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-25 08:51:02,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:02,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1575402, now seen corresponding path program 2 times [2019-11-25 08:51:02,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:02,038 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909819527] [2019-11-25 08:51:02,038 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:02,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:02,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:02,044 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:02,078 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:02,078 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:02,078 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:02,078 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:02,078 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:51:02,078 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:02,078 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:02,078 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:02,078 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration6_Loop [2019-11-25 08:51:02,079 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:02,079 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:02,080 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:02,084 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:02,087 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:02,093 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:02,176 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:02,176 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:02,185 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:02,185 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:02,191 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:51:02,191 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=0} Honda state: {ULTIMATE.start_main_~up~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:02,199 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:02,200 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:02,204 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:51:02,204 INFO L440 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/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:02,217 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:02,217 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 33 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 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:02,230 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:51:02,230 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:51:02,343 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:51:02,344 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:02,344 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:02,345 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:02,345 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:02,345 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:51:02,345 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:02,345 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:02,345 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:02,345 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration6_Loop [2019-11-25 08:51:02,345 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:02,345 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:02,346 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:02,356 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:02,368 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:02,374 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:02,447 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:02,447 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 34 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 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:02,453 INFO L120 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 [2019-11-25 08:51:02,455 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:02,455 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:51:02,455 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:02,455 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-25 08:51:02,455 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:02,457 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-25 08:51:02,457 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:51:02,459 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 35 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 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:02,464 INFO L120 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 [2019-11-25 08:51:02,466 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:02,466 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:51:02,466 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:02,466 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:02,466 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:02,467 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:51:02,467 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:51:02,469 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:51:02,472 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:51:02,472 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 36 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 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:02,476 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:51:02,476 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:51:02,476 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:51:02,476 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-25 08:51:02,480 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:51:02,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:02,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:02,495 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:51:02,496 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:02,500 INFO L255 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:51:02,500 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:02,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:02,531 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 [2019-11-25 08:51:02,531 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 53 transitions. cyclomatic complexity: 20 Second operand 5 states. [2019-11-25 08:51:02,562 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 53 transitions. cyclomatic complexity: 20. Second operand 5 states. Result 93 states and 141 transitions. Complement of second has 7 states. [2019-11-25 08:51:02,563 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 [2019-11-25 08:51:02,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-25 08:51:02,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-11-25 08:51:02,563 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 4 letters. [2019-11-25 08:51:02,563 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:02,563 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 11 letters. Loop has 4 letters. [2019-11-25 08:51:02,563 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:02,564 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 8 letters. [2019-11-25 08:51:02,564 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:02,564 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 93 states and 141 transitions. [2019-11-25 08:51:02,567 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 19 [2019-11-25 08:51:02,568 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 93 states to 78 states and 116 transitions. [2019-11-25 08:51:02,568 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2019-11-25 08:51:02,568 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2019-11-25 08:51:02,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 116 transitions. [2019-11-25 08:51:02,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:02,569 INFO L688 BuchiCegarLoop]: Abstraction has 78 states and 116 transitions. [2019-11-25 08:51:02,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states and 116 transitions. [2019-11-25 08:51:02,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2019-11-25 08:51:02,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2019-11-25 08:51:02,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 115 transitions. [2019-11-25 08:51:02,574 INFO L711 BuchiCegarLoop]: Abstraction has 77 states and 115 transitions. [2019-11-25 08:51:02,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:51:02,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:51:02,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:51:02,575 INFO L87 Difference]: Start difference. First operand 77 states and 115 transitions. Second operand 4 states. [2019-11-25 08:51:02,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:51:02,600 INFO L93 Difference]: Finished difference Result 105 states and 146 transitions. [2019-11-25 08:51:02,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:51:02,601 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 105 states and 146 transitions. [2019-11-25 08:51:02,603 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 35 [2019-11-25 08:51:02,604 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 105 states to 105 states and 146 transitions. [2019-11-25 08:51:02,604 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 65 [2019-11-25 08:51:02,605 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 65 [2019-11-25 08:51:02,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 105 states and 146 transitions. [2019-11-25 08:51:02,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:02,605 INFO L688 BuchiCegarLoop]: Abstraction has 105 states and 146 transitions. [2019-11-25 08:51:02,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states and 146 transitions. [2019-11-25 08:51:02,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 99. [2019-11-25 08:51:02,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2019-11-25 08:51:02,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 140 transitions. [2019-11-25 08:51:02,612 INFO L711 BuchiCegarLoop]: Abstraction has 99 states and 140 transitions. [2019-11-25 08:51:02,612 INFO L591 BuchiCegarLoop]: Abstraction has 99 states and 140 transitions. [2019-11-25 08:51:02,612 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-25 08:51:02,612 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 99 states and 140 transitions. [2019-11-25 08:51:02,614 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 35 [2019-11-25 08:51:02,614 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:51:02,614 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:51:02,615 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2019-11-25 08:51:02,615 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:51:02,615 INFO L794 eck$LassoCheckResult]: Stem: 849#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 850#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 875#L12 assume !(10 == main_~i~0); 872#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 873#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 868#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 869#L12 assume !(10 == main_~i~0); 923#L12-2 assume !(0 == main_~i~0); 922#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 910#L18-1 [2019-11-25 08:51:02,615 INFO L796 eck$LassoCheckResult]: Loop: 910#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 921#L12 assume !(10 == main_~i~0); 919#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 917#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 910#L18-1 [2019-11-25 08:51:02,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:02,616 INFO L82 PathProgramCache]: Analyzing trace with hash -760725578, now seen corresponding path program 1 times [2019-11-25 08:51:02,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:02,616 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273472812] [2019-11-25 08:51:02,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:02,639 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-25 08:51:02,639 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273472812] [2019-11-25 08:51:02,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:51:02,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:51:02,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561266743] [2019-11-25 08:51:02,640 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-25 08:51:02,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:02,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1236462, now seen corresponding path program 1 times [2019-11-25 08:51:02,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:02,640 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162230980] [2019-11-25 08:51:02,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:02,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:02,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:02,654 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162230980] [2019-11-25 08:51:02,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:51:02,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:51:02,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207398638] [2019-11-25 08:51:02,655 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-25 08:51:02,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:51:02,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:51:02,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:51:02,655 INFO L87 Difference]: Start difference. First operand 99 states and 140 transitions. cyclomatic complexity: 51 Second operand 3 states. [2019-11-25 08:51:02,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:51:02,663 INFO L93 Difference]: Finished difference Result 64 states and 76 transitions. [2019-11-25 08:51:02,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:51:02,664 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 64 states and 76 transitions. [2019-11-25 08:51:02,665 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2019-11-25 08:51:02,666 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 64 states to 51 states and 63 transitions. [2019-11-25 08:51:02,666 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2019-11-25 08:51:02,666 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2019-11-25 08:51:02,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 63 transitions. [2019-11-25 08:51:02,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:02,666 INFO L688 BuchiCegarLoop]: Abstraction has 51 states and 63 transitions. [2019-11-25 08:51:02,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states and 63 transitions. [2019-11-25 08:51:02,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 46. [2019-11-25 08:51:02,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-11-25 08:51:02,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2019-11-25 08:51:02,673 INFO L711 BuchiCegarLoop]: Abstraction has 46 states and 58 transitions. [2019-11-25 08:51:02,673 INFO L591 BuchiCegarLoop]: Abstraction has 46 states and 58 transitions. [2019-11-25 08:51:02,673 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-11-25 08:51:02,674 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 46 states and 58 transitions. [2019-11-25 08:51:02,674 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2019-11-25 08:51:02,674 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:51:02,674 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:51:02,675 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [4, 2, 2, 2, 2, 1, 1, 1] [2019-11-25 08:51:02,675 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:51:02,675 INFO L794 eck$LassoCheckResult]: Stem: 1019#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 1020#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1050#L12 assume 10 == main_~i~0;main_~up~0 := 0; 1055#L12-2 assume !(0 == main_~i~0); 1030#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1031#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1048#L12 assume !(10 == main_~i~0); 1044#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 1045#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1038#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1039#L12 assume !(10 == main_~i~0); 1034#L12-2 assume !(0 == main_~i~0); 1035#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1040#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1041#L12 assume 10 == main_~i~0;main_~up~0 := 0; 1057#L12-2 [2019-11-25 08:51:02,675 INFO L796 eck$LassoCheckResult]: Loop: 1057#L12-2 assume !(0 == main_~i~0); 1028#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1029#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1058#L12 assume 10 == main_~i~0;main_~up~0 := 0; 1057#L12-2 [2019-11-25 08:51:02,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:02,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1385122848, now seen corresponding path program 1 times [2019-11-25 08:51:02,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:02,676 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466812719] [2019-11-25 08:51:02,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:02,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:02,706 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-25 08:51:02,706 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466812719] [2019-11-25 08:51:02,706 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003737055] [2019-11-25 08:51:02,706 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:51:02,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:02,735 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-25 08:51:02,736 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:02,739 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-25 08:51:02,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:51:02,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-11-25 08:51:02,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114267903] [2019-11-25 08:51:02,740 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-25 08:51:02,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:02,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1575402, now seen corresponding path program 3 times [2019-11-25 08:51:02,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:02,741 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374789506] [2019-11-25 08:51:02,741 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:02,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:02,747 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:02,779 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:02,779 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:02,779 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:02,779 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:02,779 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:51:02,779 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:02,779 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:02,779 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:02,779 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration8_Loop [2019-11-25 08:51:02,779 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:02,779 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:02,780 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:02,786 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:02,791 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:02,794 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:02,848 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:02,848 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 38 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 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:02,852 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:02,852 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 39 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 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:02,858 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:51:02,859 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:51:02,960 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:51:02,961 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:02,962 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:02,962 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:02,962 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:02,962 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:51:02,962 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:02,962 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:02,962 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:02,962 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration8_Loop [2019-11-25 08:51:02,962 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:02,962 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:02,963 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:02,968 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:02,970 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:02,974 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:03,031 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:03,031 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 40 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 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:03,036 INFO L120 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 [2019-11-25 08:51:03,037 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:03,037 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:51:03,038 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:03,038 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:03,038 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:03,040 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:51:03,040 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:51:03,042 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:51:03,050 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:51:03,050 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:03,057 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:51:03,057 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:51:03,057 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:51:03,057 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-25 08:51:03,060 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:03,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:03,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:03,108 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:51:03,109 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:03,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:03,113 INFO L255 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:51:03,113 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:03,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:03,129 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 [2019-11-25 08:51:03,129 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 46 states and 58 transitions. cyclomatic complexity: 18 Second operand 5 states. [2019-11-25 08:51:03,157 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 46 states and 58 transitions. cyclomatic complexity: 18. Second operand 5 states. Result 59 states and 75 transitions. Complement of second has 7 states. [2019-11-25 08:51:03,160 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 [2019-11-25 08:51:03,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-25 08:51:03,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-11-25 08:51:03,161 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 4 letters. [2019-11-25 08:51:03,161 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:03,161 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:51:03,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:03,186 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:51:03,186 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:03,191 INFO L255 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:51:03,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:03,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:03,219 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-25 08:51:03,219 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 46 states and 58 transitions. cyclomatic complexity: 18 Second operand 5 states. [2019-11-25 08:51:03,259 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 46 states and 58 transitions. cyclomatic complexity: 18. Second operand 5 states. Result 81 states and 96 transitions. Complement of second has 9 states. [2019-11-25 08:51:03,260 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 [2019-11-25 08:51:03,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-25 08:51:03,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2019-11-25 08:51:03,260 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 15 letters. Loop has 4 letters. [2019-11-25 08:51:03,260 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:03,260 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:51:03,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:03,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:03,278 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:51:03,279 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:03,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:03,286 INFO L255 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:51:03,286 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:03,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:03,307 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 3 loop predicates [2019-11-25 08:51:03,307 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 46 states and 58 transitions. cyclomatic complexity: 18 Second operand 5 states. [2019-11-25 08:51:03,332 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 46 states and 58 transitions. cyclomatic complexity: 18. Second operand 5 states. Result 68 states and 87 transitions. Complement of second has 8 states. [2019-11-25 08:51:03,334 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 [2019-11-25 08:51:03,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-25 08:51:03,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2019-11-25 08:51:03,334 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 15 letters. Loop has 4 letters. [2019-11-25 08:51:03,335 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:03,335 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 19 letters. Loop has 4 letters. [2019-11-25 08:51:03,335 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:03,335 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 15 letters. Loop has 8 letters. [2019-11-25 08:51:03,336 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:03,336 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 87 transitions. [2019-11-25 08:51:03,337 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2019-11-25 08:51:03,338 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 51 states and 63 transitions. [2019-11-25 08:51:03,338 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2019-11-25 08:51:03,338 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2019-11-25 08:51:03,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 63 transitions. [2019-11-25 08:51:03,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:03,339 INFO L688 BuchiCegarLoop]: Abstraction has 51 states and 63 transitions. [2019-11-25 08:51:03,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states and 63 transitions. [2019-11-25 08:51:03,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 28. [2019-11-25 08:51:03,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-25 08:51:03,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2019-11-25 08:51:03,341 INFO L711 BuchiCegarLoop]: Abstraction has 28 states and 35 transitions. [2019-11-25 08:51:03,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:51:03,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:51:03,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:51:03,341 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 4 states. [2019-11-25 08:51:03,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:51:03,361 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2019-11-25 08:51:03,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:51:03,362 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 52 transitions. [2019-11-25 08:51:03,362 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2019-11-25 08:51:03,363 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 40 states and 49 transitions. [2019-11-25 08:51:03,363 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2019-11-25 08:51:03,363 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2019-11-25 08:51:03,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 49 transitions. [2019-11-25 08:51:03,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:03,363 INFO L688 BuchiCegarLoop]: Abstraction has 40 states and 49 transitions. [2019-11-25 08:51:03,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states and 49 transitions. [2019-11-25 08:51:03,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2019-11-25 08:51:03,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-25 08:51:03,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2019-11-25 08:51:03,365 INFO L711 BuchiCegarLoop]: Abstraction has 35 states and 43 transitions. [2019-11-25 08:51:03,365 INFO L591 BuchiCegarLoop]: Abstraction has 35 states and 43 transitions. [2019-11-25 08:51:03,365 INFO L424 BuchiCegarLoop]: ======== Iteration 9============ [2019-11-25 08:51:03,365 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 43 transitions. [2019-11-25 08:51:03,365 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2019-11-25 08:51:03,365 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:51:03,365 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:51:03,366 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 1, 1, 1, 1] [2019-11-25 08:51:03,366 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 1, 1] [2019-11-25 08:51:03,366 INFO L794 eck$LassoCheckResult]: Stem: 1606#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 1607#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1612#L12 assume !(10 == main_~i~0); 1613#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 1615#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1608#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1609#L12 assume !(10 == main_~i~0); 1633#L12-2 assume !(0 == main_~i~0); 1632#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1631#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1621#L12 assume 10 == main_~i~0;main_~up~0 := 0; 1602#L12-2 [2019-11-25 08:51:03,366 INFO L796 eck$LassoCheckResult]: Loop: 1602#L12-2 assume !(0 == main_~i~0); 1603#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1636#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1635#L12 assume !(10 == main_~i~0); 1624#L12-2 assume !(0 == main_~i~0); 1629#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1627#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1622#L12 assume !(10 == main_~i~0); 1625#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 1628#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1626#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1619#L12 assume !(10 == main_~i~0); 1617#L12-2 assume !(0 == main_~i~0); 1618#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1630#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1620#L12 assume 10 == main_~i~0;main_~up~0 := 0; 1602#L12-2 [2019-11-25 08:51:03,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:03,367 INFO L82 PathProgramCache]: Analyzing trace with hash -912841737, now seen corresponding path program 1 times [2019-11-25 08:51:03,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:03,367 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342675920] [2019-11-25 08:51:03,367 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:03,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:03,406 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:03,406 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342675920] [2019-11-25 08:51:03,406 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723804879] [2019-11-25 08:51:03,406 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-11-25 08:51:03,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:51:03,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:51:03,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:03,437 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:03,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:51:03,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-11-25 08:51:03,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374388370] [2019-11-25 08:51:03,445 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-25 08:51:03,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:03,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1697726743, now seen corresponding path program 1 times [2019-11-25 08:51:03,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:03,446 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954799277] [2019-11-25 08:51:03,446 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:03,480 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-25 08:51:03,480 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954799277] [2019-11-25 08:51:03,480 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024524491] [2019-11-25 08:51:03,480 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:51:03,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:03,507 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:51:03,507 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:03,510 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-25 08:51:03,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:51:03,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-11-25 08:51:03,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338348507] [2019-11-25 08:51:03,511 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-25 08:51:03,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:51:03,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:51:03,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:51:03,511 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. cyclomatic complexity: 11 Second operand 5 states. [2019-11-25 08:51:03,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:51:03,540 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2019-11-25 08:51:03,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:51:03,540 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 57 transitions. [2019-11-25 08:51:03,540 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2019-11-25 08:51:03,541 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 48 states and 56 transitions. [2019-11-25 08:51:03,541 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2019-11-25 08:51:03,541 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2019-11-25 08:51:03,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 56 transitions. [2019-11-25 08:51:03,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:03,541 INFO L688 BuchiCegarLoop]: Abstraction has 48 states and 56 transitions. [2019-11-25 08:51:03,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 56 transitions. [2019-11-25 08:51:03,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 43. [2019-11-25 08:51:03,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-25 08:51:03,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2019-11-25 08:51:03,545 INFO L711 BuchiCegarLoop]: Abstraction has 43 states and 51 transitions. [2019-11-25 08:51:03,545 INFO L591 BuchiCegarLoop]: Abstraction has 43 states and 51 transitions. [2019-11-25 08:51:03,545 INFO L424 BuchiCegarLoop]: ======== Iteration 10============ [2019-11-25 08:51:03,545 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 43 states and 51 transitions. [2019-11-25 08:51:03,546 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2019-11-25 08:51:03,546 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:51:03,546 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:51:03,547 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 3, 2, 1, 1, 1] [2019-11-25 08:51:03,547 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [5, 4, 4, 3, 2, 1, 1] [2019-11-25 08:51:03,547 INFO L794 eck$LassoCheckResult]: Stem: 1776#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 1777#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1793#L12 assume !(10 == main_~i~0); 1794#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 1809#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1806#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1807#L12 assume !(10 == main_~i~0); 1813#L12-2 assume !(0 == main_~i~0); 1812#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1780#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1781#L12 assume !(10 == main_~i~0); 1774#L12-2 assume !(0 == main_~i~0); 1775#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1786#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1808#L12 assume 10 == main_~i~0;main_~up~0 := 0; 1772#L12-2 [2019-11-25 08:51:03,547 INFO L796 eck$LassoCheckResult]: Loop: 1772#L12-2 assume !(0 == main_~i~0); 1773#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1803#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1801#L12 assume !(10 == main_~i~0); 1792#L12-2 assume !(0 == main_~i~0); 1798#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1795#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1790#L12 assume !(10 == main_~i~0); 1787#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 1788#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1778#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1779#L12 assume !(10 == main_~i~0); 1814#L12-2 assume !(0 == main_~i~0); 1784#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1785#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1782#L12 assume !(10 == main_~i~0); 1783#L12-2 assume !(0 == main_~i~0); 1789#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1810#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1811#L12 assume 10 == main_~i~0;main_~up~0 := 0; 1772#L12-2 [2019-11-25 08:51:03,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:03,548 INFO L82 PathProgramCache]: Analyzing trace with hash 554461792, now seen corresponding path program 2 times [2019-11-25 08:51:03,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:03,548 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470705137] [2019-11-25 08:51:03,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:03,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:03,585 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:03,585 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470705137] [2019-11-25 08:51:03,585 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270762083] [2019-11-25 08:51:03,586 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:51:03,610 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:51:03,610 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:51:03,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:51:03,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:03,629 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:03,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:51:03,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-11-25 08:51:03,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048506591] [2019-11-25 08:51:03,630 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-25 08:51:03,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:03,636 INFO L82 PathProgramCache]: Analyzing trace with hash 104414290, now seen corresponding path program 2 times [2019-11-25 08:51:03,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:03,636 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658402872] [2019-11-25 08:51:03,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:03,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:03,668 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-25 08:51:03,668 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658402872] [2019-11-25 08:51:03,668 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980512512] [2019-11-25 08:51:03,668 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:51:03,692 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:51:03,692 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:51:03,693 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:51:03,694 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:03,697 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-25 08:51:03,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:51:03,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-11-25 08:51:03,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338763522] [2019-11-25 08:51:03,699 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-25 08:51:03,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:51:03,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:51:03,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:51:03,699 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. cyclomatic complexity: 11 Second operand 6 states. [2019-11-25 08:51:03,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:51:03,747 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2019-11-25 08:51:03,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:51:03,748 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 57 states and 65 transitions. [2019-11-25 08:51:03,749 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 27 [2019-11-25 08:51:03,749 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 57 states to 56 states and 64 transitions. [2019-11-25 08:51:03,749 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2019-11-25 08:51:03,750 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2019-11-25 08:51:03,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 64 transitions. [2019-11-25 08:51:03,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:03,750 INFO L688 BuchiCegarLoop]: Abstraction has 56 states and 64 transitions. [2019-11-25 08:51:03,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 64 transitions. [2019-11-25 08:51:03,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2019-11-25 08:51:03,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-11-25 08:51:03,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2019-11-25 08:51:03,752 INFO L711 BuchiCegarLoop]: Abstraction has 51 states and 59 transitions. [2019-11-25 08:51:03,752 INFO L591 BuchiCegarLoop]: Abstraction has 51 states and 59 transitions. [2019-11-25 08:51:03,752 INFO L424 BuchiCegarLoop]: ======== Iteration 11============ [2019-11-25 08:51:03,752 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 51 states and 59 transitions. [2019-11-25 08:51:03,752 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 25 [2019-11-25 08:51:03,752 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:51:03,752 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:51:03,753 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 4, 3, 1, 1, 1] [2019-11-25 08:51:03,753 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [6, 5, 5, 4, 2, 1, 1] [2019-11-25 08:51:03,753 INFO L794 eck$LassoCheckResult]: Stem: 1988#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 1989#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1999#L12 assume !(10 == main_~i~0); 2000#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 2018#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2015#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2016#L12 assume !(10 == main_~i~0); 2023#L12-2 assume !(0 == main_~i~0); 2024#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2028#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2026#L12 assume !(10 == main_~i~0); 2027#L12-2 assume !(0 == main_~i~0); 1996#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1992#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1993#L12 assume !(10 == main_~i~0); 1986#L12-2 assume !(0 == main_~i~0); 1987#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2019#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2017#L12 assume 10 == main_~i~0;main_~up~0 := 0; 1984#L12-2 [2019-11-25 08:51:03,753 INFO L796 eck$LassoCheckResult]: Loop: 1984#L12-2 assume !(0 == main_~i~0); 1985#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2013#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2011#L12 assume !(10 == main_~i~0); 2003#L12-2 assume !(0 == main_~i~0); 2008#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2006#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2001#L12 assume !(10 == main_~i~0); 1997#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 1995#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1990#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1991#L12 assume !(10 == main_~i~0); 1994#L12-2 assume !(0 == main_~i~0); 1998#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2034#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2033#L12 assume !(10 == main_~i~0); 2032#L12-2 assume !(0 == main_~i~0); 2031#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2030#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2029#L12 assume !(10 == main_~i~0); 2025#L12-2 assume !(0 == main_~i~0); 2022#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2020#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2021#L12 assume 10 == main_~i~0;main_~up~0 := 0; 1984#L12-2 [2019-11-25 08:51:03,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:03,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1774824375, now seen corresponding path program 3 times [2019-11-25 08:51:03,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:03,754 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372672019] [2019-11-25 08:51:03,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:03,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:03,812 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:03,812 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372672019] [2019-11-25 08:51:03,812 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959943992] [2019-11-25 08:51:03,813 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:51:03,832 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-11-25 08:51:03,832 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:51:03,832 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:51:03,833 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:03,837 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:03,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:51:03,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-11-25 08:51:03,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050575520] [2019-11-25 08:51:03,838 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-25 08:51:03,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:03,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1813717701, now seen corresponding path program 3 times [2019-11-25 08:51:03,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:03,839 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329792571] [2019-11-25 08:51:03,839 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:03,885 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 33 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-25 08:51:03,886 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329792571] [2019-11-25 08:51:03,886 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718329286] [2019-11-25 08:51:03,886 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:51:03,911 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-11-25 08:51:03,912 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:51:03,912 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:51:03,913 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:03,917 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 33 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-25 08:51:03,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:51:03,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-11-25 08:51:03,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471924194] [2019-11-25 08:51:03,918 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-25 08:51:03,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:51:03,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-25 08:51:03,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:51:03,919 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. cyclomatic complexity: 11 Second operand 7 states. [2019-11-25 08:51:03,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:51:03,967 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2019-11-25 08:51:03,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-25 08:51:03,968 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 65 states and 73 transitions. [2019-11-25 08:51:03,969 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 31 [2019-11-25 08:51:03,969 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 65 states to 64 states and 72 transitions. [2019-11-25 08:51:03,969 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2019-11-25 08:51:03,969 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30 [2019-11-25 08:51:03,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 72 transitions. [2019-11-25 08:51:03,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:03,970 INFO L688 BuchiCegarLoop]: Abstraction has 64 states and 72 transitions. [2019-11-25 08:51:03,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states and 72 transitions. [2019-11-25 08:51:03,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 59. [2019-11-25 08:51:03,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-11-25 08:51:03,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2019-11-25 08:51:03,972 INFO L711 BuchiCegarLoop]: Abstraction has 59 states and 67 transitions. [2019-11-25 08:51:03,972 INFO L591 BuchiCegarLoop]: Abstraction has 59 states and 67 transitions. [2019-11-25 08:51:03,972 INFO L424 BuchiCegarLoop]: ======== Iteration 12============ [2019-11-25 08:51:03,972 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 59 states and 67 transitions. [2019-11-25 08:51:03,973 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 29 [2019-11-25 08:51:03,973 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:51:03,973 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:51:03,974 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [6, 5, 5, 4, 1, 1, 1] [2019-11-25 08:51:03,974 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [7, 6, 6, 5, 2, 1, 1] [2019-11-25 08:51:03,974 INFO L794 eck$LassoCheckResult]: Stem: 2242#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 2243#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2254#L12 assume !(10 == main_~i~0); 2255#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 2273#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2270#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2271#L12 assume !(10 == main_~i~0); 2296#L12-2 assume !(0 == main_~i~0); 2295#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2246#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2247#L12 assume !(10 == main_~i~0); 2240#L12-2 assume !(0 == main_~i~0); 2241#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2251#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2294#L12 assume !(10 == main_~i~0); 2293#L12-2 assume !(0 == main_~i~0); 2292#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2291#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2275#L12 assume !(10 == main_~i~0); 2280#L12-2 assume !(0 == main_~i~0); 2278#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2274#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2272#L12 assume 10 == main_~i~0;main_~up~0 := 0; 2238#L12-2 [2019-11-25 08:51:03,974 INFO L796 eck$LassoCheckResult]: Loop: 2238#L12-2 assume !(0 == main_~i~0); 2239#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2268#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2266#L12 assume !(10 == main_~i~0); 2258#L12-2 assume !(0 == main_~i~0); 2263#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2261#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2256#L12 assume !(10 == main_~i~0); 2252#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 2253#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2244#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2245#L12 assume !(10 == main_~i~0); 2248#L12-2 assume !(0 == main_~i~0); 2249#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2250#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2290#L12 assume !(10 == main_~i~0); 2289#L12-2 assume !(0 == main_~i~0); 2288#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2287#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2286#L12 assume !(10 == main_~i~0); 2285#L12-2 assume !(0 == main_~i~0); 2284#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2283#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2282#L12 assume !(10 == main_~i~0); 2281#L12-2 assume !(0 == main_~i~0); 2279#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2276#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2277#L12 assume 10 == main_~i~0;main_~up~0 := 0; 2238#L12-2 [2019-11-25 08:51:03,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:03,975 INFO L82 PathProgramCache]: Analyzing trace with hash 790045106, now seen corresponding path program 4 times [2019-11-25 08:51:03,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:03,975 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652169978] [2019-11-25 08:51:03,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:03,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:04,024 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:04,024 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652169978] [2019-11-25 08:51:04,024 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486601536] [2019-11-25 08:51:04,024 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:51:04,056 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-25 08:51:04,056 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:51:04,057 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-25 08:51:04,058 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:04,063 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:04,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:51:04,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2019-11-25 08:51:04,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292829302] [2019-11-25 08:51:04,064 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-25 08:51:04,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:04,064 INFO L82 PathProgramCache]: Analyzing trace with hash 798220708, now seen corresponding path program 4 times [2019-11-25 08:51:04,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:04,065 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912207608] [2019-11-25 08:51:04,065 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:04,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:04,134 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 42 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-25 08:51:04,134 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912207608] [2019-11-25 08:51:04,134 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891913194] [2019-11-25 08:51:04,134 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:51:04,170 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-25 08:51:04,170 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:51:04,171 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-25 08:51:04,172 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:04,177 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 42 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-25 08:51:04,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:51:04,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2019-11-25 08:51:04,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700215624] [2019-11-25 08:51:04,178 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-25 08:51:04,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:51:04,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-25 08:51:04,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:51:04,179 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. cyclomatic complexity: 11 Second operand 8 states. [2019-11-25 08:51:04,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:51:04,230 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2019-11-25 08:51:04,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-25 08:51:04,230 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 73 states and 81 transitions. [2019-11-25 08:51:04,231 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 35 [2019-11-25 08:51:04,232 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 73 states to 72 states and 80 transitions. [2019-11-25 08:51:04,232 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2019-11-25 08:51:04,232 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2019-11-25 08:51:04,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 80 transitions. [2019-11-25 08:51:04,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:04,232 INFO L688 BuchiCegarLoop]: Abstraction has 72 states and 80 transitions. [2019-11-25 08:51:04,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states and 80 transitions. [2019-11-25 08:51:04,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 67. [2019-11-25 08:51:04,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-11-25 08:51:04,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2019-11-25 08:51:04,235 INFO L711 BuchiCegarLoop]: Abstraction has 67 states and 75 transitions. [2019-11-25 08:51:04,235 INFO L591 BuchiCegarLoop]: Abstraction has 67 states and 75 transitions. [2019-11-25 08:51:04,235 INFO L424 BuchiCegarLoop]: ======== Iteration 13============ [2019-11-25 08:51:04,235 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 67 states and 75 transitions. [2019-11-25 08:51:04,236 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 33 [2019-11-25 08:51:04,236 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:51:04,236 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:51:04,237 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [7, 6, 6, 5, 1, 1, 1] [2019-11-25 08:51:04,237 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [8, 7, 7, 6, 2, 1, 1] [2019-11-25 08:51:04,237 INFO L794 eck$LassoCheckResult]: Stem: 2538#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 2539#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2550#L12 assume !(10 == main_~i~0); 2551#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 2569#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2566#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2567#L12 assume !(10 == main_~i~0); 2600#L12-2 assume !(0 == main_~i~0); 2599#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2542#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2543#L12 assume !(10 == main_~i~0); 2536#L12-2 assume !(0 == main_~i~0); 2537#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2547#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2598#L12 assume !(10 == main_~i~0); 2597#L12-2 assume !(0 == main_~i~0); 2596#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2595#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2594#L12 assume !(10 == main_~i~0); 2593#L12-2 assume !(0 == main_~i~0); 2592#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2591#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2573#L12 assume !(10 == main_~i~0); 2577#L12-2 assume !(0 == main_~i~0); 2575#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2572#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2568#L12 assume 10 == main_~i~0;main_~up~0 := 0; 2534#L12-2 [2019-11-25 08:51:04,238 INFO L796 eck$LassoCheckResult]: Loop: 2534#L12-2 assume !(0 == main_~i~0); 2535#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2564#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2562#L12 assume !(10 == main_~i~0); 2554#L12-2 assume !(0 == main_~i~0); 2559#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2557#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2552#L12 assume !(10 == main_~i~0); 2548#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 2549#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2540#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2541#L12 assume !(10 == main_~i~0); 2544#L12-2 assume !(0 == main_~i~0); 2545#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2546#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2590#L12 assume !(10 == main_~i~0); 2589#L12-2 assume !(0 == main_~i~0); 2588#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2587#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2586#L12 assume !(10 == main_~i~0); 2585#L12-2 assume !(0 == main_~i~0); 2584#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2583#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2582#L12 assume !(10 == main_~i~0); 2581#L12-2 assume !(0 == main_~i~0); 2580#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2579#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2578#L12 assume !(10 == main_~i~0); 2576#L12-2 assume !(0 == main_~i~0); 2574#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2570#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2571#L12 assume 10 == main_~i~0;main_~up~0 := 0; 2534#L12-2 [2019-11-25 08:51:04,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:04,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1500441957, now seen corresponding path program 5 times [2019-11-25 08:51:04,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:04,238 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705739785] [2019-11-25 08:51:04,238 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:04,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:04,318 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 17 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:04,319 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705739785] [2019-11-25 08:51:04,319 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308842775] [2019-11-25 08:51:04,319 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:51:04,347 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-11-25 08:51:04,347 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:51:04,347 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:51:04,348 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:04,353 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 17 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:04,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:51:04,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2019-11-25 08:51:04,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137852700] [2019-11-25 08:51:04,354 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-25 08:51:04,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:04,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1712813683, now seen corresponding path program 5 times [2019-11-25 08:51:04,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:04,355 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698006419] [2019-11-25 08:51:04,355 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:04,405 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 51 proven. 55 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-25 08:51:04,406 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698006419] [2019-11-25 08:51:04,406 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943484311] [2019-11-25 08:51:04,406 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:51:04,431 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2019-11-25 08:51:04,431 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:51:04,431 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:51:04,432 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:04,438 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 51 proven. 55 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-25 08:51:04,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:51:04,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2019-11-25 08:51:04,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067106265] [2019-11-25 08:51:04,439 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-25 08:51:04,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:51:04,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-25 08:51:04,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-11-25 08:51:04,439 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. cyclomatic complexity: 11 Second operand 9 states. [2019-11-25 08:51:04,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:51:04,506 INFO L93 Difference]: Finished difference Result 81 states and 89 transitions. [2019-11-25 08:51:04,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-25 08:51:04,506 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 81 states and 89 transitions. [2019-11-25 08:51:04,507 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 39 [2019-11-25 08:51:04,508 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 81 states to 80 states and 88 transitions. [2019-11-25 08:51:04,508 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 38 [2019-11-25 08:51:04,508 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 38 [2019-11-25 08:51:04,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 88 transitions. [2019-11-25 08:51:04,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:04,509 INFO L688 BuchiCegarLoop]: Abstraction has 80 states and 88 transitions. [2019-11-25 08:51:04,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states and 88 transitions. [2019-11-25 08:51:04,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 75. [2019-11-25 08:51:04,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2019-11-25 08:51:04,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 83 transitions. [2019-11-25 08:51:04,511 INFO L711 BuchiCegarLoop]: Abstraction has 75 states and 83 transitions. [2019-11-25 08:51:04,511 INFO L591 BuchiCegarLoop]: Abstraction has 75 states and 83 transitions. [2019-11-25 08:51:04,511 INFO L424 BuchiCegarLoop]: ======== Iteration 14============ [2019-11-25 08:51:04,512 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 75 states and 83 transitions. [2019-11-25 08:51:04,512 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 37 [2019-11-25 08:51:04,512 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:51:04,512 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:51:04,514 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [8, 7, 7, 6, 1, 1, 1] [2019-11-25 08:51:04,514 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [9, 8, 8, 7, 2, 1, 1] [2019-11-25 08:51:04,514 INFO L794 eck$LassoCheckResult]: Stem: 2876#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 2877#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2892#L12 assume !(10 == main_~i~0); 2893#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 2908#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2905#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2906#L12 assume !(10 == main_~i~0); 2946#L12-2 assume !(0 == main_~i~0); 2945#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2880#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2881#L12 assume !(10 == main_~i~0); 2874#L12-2 assume !(0 == main_~i~0); 2875#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2885#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2944#L12 assume !(10 == main_~i~0); 2943#L12-2 assume !(0 == main_~i~0); 2942#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2941#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2940#L12 assume !(10 == main_~i~0); 2939#L12-2 assume !(0 == main_~i~0); 2938#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2937#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2936#L12 assume !(10 == main_~i~0); 2935#L12-2 assume !(0 == main_~i~0); 2934#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2933#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2912#L12 assume !(10 == main_~i~0); 2916#L12-2 assume !(0 == main_~i~0); 2914#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2911#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2907#L12 assume 10 == main_~i~0;main_~up~0 := 0; 2872#L12-2 [2019-11-25 08:51:04,514 INFO L796 eck$LassoCheckResult]: Loop: 2872#L12-2 assume !(0 == main_~i~0); 2873#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2902#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2900#L12 assume !(10 == main_~i~0); 2891#L12-2 assume !(0 == main_~i~0); 2897#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2894#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2889#L12 assume !(10 == main_~i~0); 2886#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 2883#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2884#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2932#L12 assume !(10 == main_~i~0); 2887#L12-2 assume !(0 == main_~i~0); 2888#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2878#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2879#L12 assume !(10 == main_~i~0); 2882#L12-2 assume !(0 == main_~i~0); 2931#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2930#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2929#L12 assume !(10 == main_~i~0); 2928#L12-2 assume !(0 == main_~i~0); 2927#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2926#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2925#L12 assume !(10 == main_~i~0); 2924#L12-2 assume !(0 == main_~i~0); 2923#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2922#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2921#L12 assume !(10 == main_~i~0); 2920#L12-2 assume !(0 == main_~i~0); 2919#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2918#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2917#L12 assume !(10 == main_~i~0); 2915#L12-2 assume !(0 == main_~i~0); 2913#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2909#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2910#L12 assume 10 == main_~i~0;main_~up~0 := 0; 2872#L12-2 [2019-11-25 08:51:04,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:04,515 INFO L82 PathProgramCache]: Analyzing trace with hash -60397820, now seen corresponding path program 6 times [2019-11-25 08:51:04,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:04,515 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56329680] [2019-11-25 08:51:04,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:04,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:04,608 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 20 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:04,608 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56329680] [2019-11-25 08:51:04,609 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238253410] [2019-11-25 08:51:04,609 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:51:04,640 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2019-11-25 08:51:04,640 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:51:04,640 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-25 08:51:04,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:04,647 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 20 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:04,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:51:04,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2019-11-25 08:51:04,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584971210] [2019-11-25 08:51:04,648 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-25 08:51:04,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:04,649 INFO L82 PathProgramCache]: Analyzing trace with hash -127593226, now seen corresponding path program 6 times [2019-11-25 08:51:04,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:04,649 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044286764] [2019-11-25 08:51:04,649 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:04,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:04,729 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 60 proven. 78 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-25 08:51:04,729 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044286764] [2019-11-25 08:51:04,730 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967942037] [2019-11-25 08:51:04,730 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:51:04,770 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2019-11-25 08:51:04,770 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:51:04,770 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-25 08:51:04,771 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:04,777 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 60 proven. 78 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-25 08:51:04,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:51:04,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2019-11-25 08:51:04,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732857860] [2019-11-25 08:51:04,778 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-25 08:51:04,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:51:04,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-25 08:51:04,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:51:04,779 INFO L87 Difference]: Start difference. First operand 75 states and 83 transitions. cyclomatic complexity: 11 Second operand 10 states. [2019-11-25 08:51:04,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:51:04,866 INFO L93 Difference]: Finished difference Result 89 states and 97 transitions. [2019-11-25 08:51:04,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-25 08:51:04,866 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 89 states and 97 transitions. [2019-11-25 08:51:04,867 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2019-11-25 08:51:04,868 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 89 states to 88 states and 96 transitions. [2019-11-25 08:51:04,868 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2019-11-25 08:51:04,868 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2019-11-25 08:51:04,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 96 transitions. [2019-11-25 08:51:04,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:04,869 INFO L688 BuchiCegarLoop]: Abstraction has 88 states and 96 transitions. [2019-11-25 08:51:04,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states and 96 transitions. [2019-11-25 08:51:04,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 83. [2019-11-25 08:51:04,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2019-11-25 08:51:04,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2019-11-25 08:51:04,871 INFO L711 BuchiCegarLoop]: Abstraction has 83 states and 91 transitions. [2019-11-25 08:51:04,871 INFO L591 BuchiCegarLoop]: Abstraction has 83 states and 91 transitions. [2019-11-25 08:51:04,871 INFO L424 BuchiCegarLoop]: ======== Iteration 15============ [2019-11-25 08:51:04,871 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 83 states and 91 transitions. [2019-11-25 08:51:04,872 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 41 [2019-11-25 08:51:04,872 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:51:04,872 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:51:04,873 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [9, 8, 8, 7, 1, 1, 1] [2019-11-25 08:51:04,878 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [10, 9, 9, 8, 2, 1, 1] [2019-11-25 08:51:04,878 INFO L794 eck$LassoCheckResult]: Stem: 3256#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 3257#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3272#L12 assume !(10 == main_~i~0); 3273#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 3287#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3285#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3263#L12 assume !(10 == main_~i~0); 3254#L12-2 assume !(0 == main_~i~0); 3255#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3260#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3261#L12 assume !(10 == main_~i~0); 3334#L12-2 assume !(0 == main_~i~0); 3333#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3332#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3331#L12 assume !(10 == main_~i~0); 3330#L12-2 assume !(0 == main_~i~0); 3329#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3328#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3327#L12 assume !(10 == main_~i~0); 3326#L12-2 assume !(0 == main_~i~0); 3325#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3324#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3323#L12 assume !(10 == main_~i~0); 3322#L12-2 assume !(0 == main_~i~0); 3321#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3320#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3319#L12 assume !(10 == main_~i~0); 3318#L12-2 assume !(0 == main_~i~0); 3317#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3316#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3291#L12 assume !(10 == main_~i~0); 3295#L12-2 assume !(0 == main_~i~0); 3293#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3290#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3286#L12 assume 10 == main_~i~0;main_~up~0 := 0; 3252#L12-2 [2019-11-25 08:51:04,880 INFO L796 eck$LassoCheckResult]: Loop: 3252#L12-2 assume !(0 == main_~i~0); 3253#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3282#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3280#L12 assume !(10 == main_~i~0); 3271#L12-2 assume !(0 == main_~i~0); 3277#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3274#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3269#L12 assume !(10 == main_~i~0); 3266#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 3264#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3265#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3315#L12 assume !(10 == main_~i~0); 3267#L12-2 assume !(0 == main_~i~0); 3268#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3258#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3259#L12 assume !(10 == main_~i~0); 3262#L12-2 assume !(0 == main_~i~0); 3314#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3313#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3312#L12 assume !(10 == main_~i~0); 3311#L12-2 assume !(0 == main_~i~0); 3310#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3309#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3308#L12 assume !(10 == main_~i~0); 3307#L12-2 assume !(0 == main_~i~0); 3306#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3305#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3304#L12 assume !(10 == main_~i~0); 3303#L12-2 assume !(0 == main_~i~0); 3302#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3301#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3300#L12 assume !(10 == main_~i~0); 3299#L12-2 assume !(0 == main_~i~0); 3298#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3297#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3296#L12 assume !(10 == main_~i~0); 3294#L12-2 assume !(0 == main_~i~0); 3292#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3288#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3289#L12 assume 10 == main_~i~0;main_~up~0 := 0; 3252#L12-2 [2019-11-25 08:51:04,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:04,882 INFO L82 PathProgramCache]: Analyzing trace with hash 87645933, now seen corresponding path program 7 times [2019-11-25 08:51:04,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:04,882 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489680733] [2019-11-25 08:51:04,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:04,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:04,983 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 23 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:04,983 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489680733] [2019-11-25 08:51:04,983 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696572475] [2019-11-25 08:51:04,983 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:51:05,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:05,014 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-25 08:51:05,014 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:05,020 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 23 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:05,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:51:05,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2019-11-25 08:51:05,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342499729] [2019-11-25 08:51:05,022 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-25 08:51:05,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:05,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1701561311, now seen corresponding path program 7 times [2019-11-25 08:51:05,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:05,022 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063280836] [2019-11-25 08:51:05,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:05,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:05,094 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 69 proven. 105 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-25 08:51:05,094 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063280836] [2019-11-25 08:51:05,094 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970033358] [2019-11-25 08:51:05,094 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:51:05,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:05,120 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-25 08:51:05,121 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:05,128 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 69 proven. 105 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-25 08:51:05,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:51:05,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2019-11-25 08:51:05,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369157391] [2019-11-25 08:51:05,129 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-25 08:51:05,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:51:05,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-25 08:51:05,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-11-25 08:51:05,130 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. cyclomatic complexity: 11 Second operand 11 states. [2019-11-25 08:51:05,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:51:05,192 INFO L93 Difference]: Finished difference Result 97 states and 105 transitions. [2019-11-25 08:51:05,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-25 08:51:05,192 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 97 states and 105 transitions. [2019-11-25 08:51:05,193 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2019-11-25 08:51:05,194 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 97 states to 96 states and 104 transitions. [2019-11-25 08:51:05,194 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2019-11-25 08:51:05,195 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2019-11-25 08:51:05,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 96 states and 104 transitions. [2019-11-25 08:51:05,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:05,195 INFO L688 BuchiCegarLoop]: Abstraction has 96 states and 104 transitions. [2019-11-25 08:51:05,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states and 104 transitions. [2019-11-25 08:51:05,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91. [2019-11-25 08:51:05,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2019-11-25 08:51:05,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 99 transitions. [2019-11-25 08:51:05,197 INFO L711 BuchiCegarLoop]: Abstraction has 91 states and 99 transitions. [2019-11-25 08:51:05,197 INFO L591 BuchiCegarLoop]: Abstraction has 91 states and 99 transitions. [2019-11-25 08:51:05,198 INFO L424 BuchiCegarLoop]: ======== Iteration 16============ [2019-11-25 08:51:05,198 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 91 states and 99 transitions. [2019-11-25 08:51:05,198 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 45 [2019-11-25 08:51:05,198 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:51:05,198 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:51:05,200 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [10, 9, 9, 8, 1, 1, 1] [2019-11-25 08:51:05,200 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [11, 10, 10, 9, 2, 1, 1] [2019-11-25 08:51:05,200 INFO L794 eck$LassoCheckResult]: Stem: 3678#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 3679#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3693#L12 assume !(10 == main_~i~0); 3694#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 3708#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3706#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3685#L12 assume !(10 == main_~i~0); 3676#L12-2 assume !(0 == main_~i~0); 3677#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3682#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3683#L12 assume !(10 == main_~i~0); 3764#L12-2 assume !(0 == main_~i~0); 3763#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3762#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3761#L12 assume !(10 == main_~i~0); 3760#L12-2 assume !(0 == main_~i~0); 3759#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3758#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3757#L12 assume !(10 == main_~i~0); 3756#L12-2 assume !(0 == main_~i~0); 3755#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3754#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3753#L12 assume !(10 == main_~i~0); 3752#L12-2 assume !(0 == main_~i~0); 3751#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3750#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3749#L12 assume !(10 == main_~i~0); 3748#L12-2 assume !(0 == main_~i~0); 3747#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3746#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3745#L12 assume !(10 == main_~i~0); 3744#L12-2 assume !(0 == main_~i~0); 3743#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3742#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3710#L12 assume !(10 == main_~i~0); 3715#L12-2 assume !(0 == main_~i~0); 3713#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3709#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3707#L12 assume 10 == main_~i~0;main_~up~0 := 0; 3674#L12-2 [2019-11-25 08:51:05,200 INFO L796 eck$LassoCheckResult]: Loop: 3674#L12-2 assume !(0 == main_~i~0); 3675#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3703#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3701#L12 assume !(10 == main_~i~0); 3692#L12-2 assume !(0 == main_~i~0); 3698#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3695#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3690#L12 assume !(10 == main_~i~0); 3688#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 3689#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3680#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3681#L12 assume !(10 == main_~i~0); 3684#L12-2 assume !(0 == main_~i~0); 3686#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3687#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3741#L12 assume !(10 == main_~i~0); 3740#L12-2 assume !(0 == main_~i~0); 3739#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3738#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3737#L12 assume !(10 == main_~i~0); 3736#L12-2 assume !(0 == main_~i~0); 3735#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3734#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3733#L12 assume !(10 == main_~i~0); 3732#L12-2 assume !(0 == main_~i~0); 3731#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3730#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3729#L12 assume !(10 == main_~i~0); 3728#L12-2 assume !(0 == main_~i~0); 3727#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3726#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3725#L12 assume !(10 == main_~i~0); 3724#L12-2 assume !(0 == main_~i~0); 3723#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3722#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3721#L12 assume !(10 == main_~i~0); 3720#L12-2 assume !(0 == main_~i~0); 3719#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3718#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3717#L12 assume !(10 == main_~i~0); 3716#L12-2 assume !(0 == main_~i~0); 3714#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3711#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3712#L12 assume 10 == main_~i~0;main_~up~0 := 0; 3674#L12-2 [2019-11-25 08:51:05,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:05,200 INFO L82 PathProgramCache]: Analyzing trace with hash -91473322, now seen corresponding path program 8 times [2019-11-25 08:51:05,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:05,201 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738134484] [2019-11-25 08:51:05,201 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:05,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:05,287 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 26 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:05,288 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738134484] [2019-11-25 08:51:05,288 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475606616] [2019-11-25 08:51:05,288 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:51:05,323 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:51:05,323 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:51:05,324 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-25 08:51:05,324 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:05,332 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 26 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:05,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:51:05,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2019-11-25 08:51:05,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543294455] [2019-11-25 08:51:05,333 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-25 08:51:05,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:05,333 INFO L82 PathProgramCache]: Analyzing trace with hash -2143365560, now seen corresponding path program 8 times [2019-11-25 08:51:05,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:05,334 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745918880] [2019-11-25 08:51:05,334 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:05,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:05,421 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 78 proven. 136 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-25 08:51:05,421 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745918880] [2019-11-25 08:51:05,421 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502101358] [2019-11-25 08:51:05,421 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:51:05,449 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:51:05,449 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:51:05,450 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-25 08:51:05,451 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:05,461 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 78 proven. 136 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-25 08:51:05,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:51:05,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2019-11-25 08:51:05,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627568038] [2019-11-25 08:51:05,462 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-25 08:51:05,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:51:05,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-25 08:51:05,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-11-25 08:51:05,463 INFO L87 Difference]: Start difference. First operand 91 states and 99 transitions. cyclomatic complexity: 11 Second operand 12 states. [2019-11-25 08:51:05,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:51:05,538 INFO L93 Difference]: Finished difference Result 105 states and 113 transitions. [2019-11-25 08:51:05,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-25 08:51:05,538 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 105 states and 113 transitions. [2019-11-25 08:51:05,539 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 51 [2019-11-25 08:51:05,540 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 105 states to 104 states and 112 transitions. [2019-11-25 08:51:05,540 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 50 [2019-11-25 08:51:05,540 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 50 [2019-11-25 08:51:05,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 112 transitions. [2019-11-25 08:51:05,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:05,541 INFO L688 BuchiCegarLoop]: Abstraction has 104 states and 112 transitions. [2019-11-25 08:51:05,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states and 112 transitions. [2019-11-25 08:51:05,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 99. [2019-11-25 08:51:05,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2019-11-25 08:51:05,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 107 transitions. [2019-11-25 08:51:05,543 INFO L711 BuchiCegarLoop]: Abstraction has 99 states and 107 transitions. [2019-11-25 08:51:05,543 INFO L591 BuchiCegarLoop]: Abstraction has 99 states and 107 transitions. [2019-11-25 08:51:05,543 INFO L424 BuchiCegarLoop]: ======== Iteration 17============ [2019-11-25 08:51:05,543 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 99 states and 107 transitions. [2019-11-25 08:51:05,544 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 49 [2019-11-25 08:51:05,544 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:51:05,544 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:51:05,545 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 9, 1, 1, 1] [2019-11-25 08:51:05,545 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [12, 11, 11, 10, 2, 1, 1] [2019-11-25 08:51:05,545 INFO L794 eck$LassoCheckResult]: Stem: 4142#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 4143#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4154#L12 assume !(10 == main_~i~0); 4155#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 4172#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4170#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4149#L12 assume !(10 == main_~i~0); 4140#L12-2 assume !(0 == main_~i~0); 4141#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4146#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4147#L12 assume !(10 == main_~i~0); 4236#L12-2 assume !(0 == main_~i~0); 4235#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4234#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4233#L12 assume !(10 == main_~i~0); 4232#L12-2 assume !(0 == main_~i~0); 4231#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4230#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4229#L12 assume !(10 == main_~i~0); 4228#L12-2 assume !(0 == main_~i~0); 4227#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4226#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4225#L12 assume !(10 == main_~i~0); 4224#L12-2 assume !(0 == main_~i~0); 4223#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4222#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4221#L12 assume !(10 == main_~i~0); 4220#L12-2 assume !(0 == main_~i~0); 4219#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4218#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4217#L12 assume !(10 == main_~i~0); 4216#L12-2 assume !(0 == main_~i~0); 4215#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4214#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4213#L12 assume !(10 == main_~i~0); 4212#L12-2 assume !(0 == main_~i~0); 4211#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4210#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4174#L12 assume !(10 == main_~i~0); 4179#L12-2 assume !(0 == main_~i~0); 4177#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4173#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4171#L12 assume 10 == main_~i~0;main_~up~0 := 0; 4138#L12-2 [2019-11-25 08:51:05,546 INFO L796 eck$LassoCheckResult]: Loop: 4138#L12-2 assume !(0 == main_~i~0); 4139#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4168#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4166#L12 assume !(10 == main_~i~0); 4158#L12-2 assume !(0 == main_~i~0); 4163#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4161#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4156#L12 assume !(10 == main_~i~0); 4152#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 4153#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4144#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4145#L12 assume !(10 == main_~i~0); 4148#L12-2 assume !(0 == main_~i~0); 4150#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4151#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4209#L12 assume !(10 == main_~i~0); 4208#L12-2 assume !(0 == main_~i~0); 4207#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4206#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4205#L12 assume !(10 == main_~i~0); 4204#L12-2 assume !(0 == main_~i~0); 4203#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4202#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4201#L12 assume !(10 == main_~i~0); 4200#L12-2 assume !(0 == main_~i~0); 4199#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4198#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4197#L12 assume !(10 == main_~i~0); 4196#L12-2 assume !(0 == main_~i~0); 4195#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4194#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4193#L12 assume !(10 == main_~i~0); 4192#L12-2 assume !(0 == main_~i~0); 4191#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4190#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4189#L12 assume !(10 == main_~i~0); 4188#L12-2 assume !(0 == main_~i~0); 4187#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4186#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4185#L12 assume !(10 == main_~i~0); 4184#L12-2 assume !(0 == main_~i~0); 4183#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4182#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4181#L12 assume !(10 == main_~i~0); 4180#L12-2 assume !(0 == main_~i~0); 4178#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4175#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4176#L12 assume 10 == main_~i~0;main_~up~0 := 0; 4138#L12-2 [2019-11-25 08:51:05,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:05,546 INFO L82 PathProgramCache]: Analyzing trace with hash 180435263, now seen corresponding path program 9 times [2019-11-25 08:51:05,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:05,546 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318908887] [2019-11-25 08:51:05,546 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:05,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:05,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:05,560 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:05,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:05,561 INFO L82 PathProgramCache]: Analyzing trace with hash -50295759, now seen corresponding path program 9 times [2019-11-25 08:51:05,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:05,561 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724262022] [2019-11-25 08:51:05,561 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:05,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:05,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:05,573 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:05,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:05,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1470164625, now seen corresponding path program 2 times [2019-11-25 08:51:05,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:05,574 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160216473] [2019-11-25 08:51:05,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:05,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:05,619 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 591 proven. 6 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2019-11-25 08:51:05,620 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160216473] [2019-11-25 08:51:05,620 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596779493] [2019-11-25 08:51:05,620 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:51:05,655 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:51:05,655 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:51:05,656 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:51:05,657 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:05,663 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 591 proven. 6 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2019-11-25 08:51:05,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:51:05,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-11-25 08:51:05,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527271700] [2019-11-25 08:51:05,878 WARN L192 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 57 [2019-11-25 08:51:05,897 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:05,897 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:05,897 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:05,897 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:05,897 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:51:05,897 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:05,897 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:05,897 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:05,897 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration17_Loop [2019-11-25 08:51:05,897 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:05,898 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:05,898 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:05,921 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:05,923 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:05,927 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:06,030 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:06,031 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 59 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 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:06,044 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:06,044 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 60 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 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:06,050 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:51:06,050 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:51:06,128 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:51:06,130 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:06,130 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:06,130 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:06,130 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:06,130 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:51:06,130 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:06,130 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:06,130 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:06,130 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration17_Loop [2019-11-25 08:51:06,130 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:06,130 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:06,131 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:06,143 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:06,145 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:06,149 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:06,215 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:06,215 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 61 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 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:06,225 INFO L120 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 [2019-11-25 08:51:06,226 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:06,226 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:51:06,226 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:06,227 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:06,227 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:06,227 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:51:06,227 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:51:06,229 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:51:06,231 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:51:06,231 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 62 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 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:06,234 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:51:06,234 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:51:06,234 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:51:06,234 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 6 Supporting invariants [] [2019-11-25 08:51:06,236 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:51:06,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:06,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:06,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:51:06,257 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:06,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:06,273 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:51:06,273 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:06,299 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2019-11-25 08:51:06,299 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2019-11-25 08:51:06,299 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 99 states and 107 transitions. cyclomatic complexity: 11 Second operand 6 states. [2019-11-25 08:51:06,420 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 99 states and 107 transitions. cyclomatic complexity: 11. Second operand 6 states. Result 367 states and 394 transitions. Complement of second has 15 states. [2019-11-25 08:51:06,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 1 stem states 6 non-accepting loop states 1 accepting loop states [2019-11-25 08:51:06,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-25 08:51:06,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 35 transitions. [2019-11-25 08:51:06,422 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 35 transitions. Stem has 43 letters. Loop has 48 letters. [2019-11-25 08:51:06,423 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:06,423 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 35 transitions. Stem has 91 letters. Loop has 48 letters. [2019-11-25 08:51:06,424 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:06,424 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 35 transitions. Stem has 43 letters. Loop has 96 letters. [2019-11-25 08:51:06,426 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:06,426 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 367 states and 394 transitions. [2019-11-25 08:51:06,432 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 53 [2019-11-25 08:51:06,434 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 367 states to 330 states and 354 transitions. [2019-11-25 08:51:06,435 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 85 [2019-11-25 08:51:06,435 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 92 [2019-11-25 08:51:06,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 330 states and 354 transitions. [2019-11-25 08:51:06,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:06,436 INFO L688 BuchiCegarLoop]: Abstraction has 330 states and 354 transitions. [2019-11-25 08:51:06,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states and 354 transitions. [2019-11-25 08:51:06,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 306. [2019-11-25 08:51:06,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2019-11-25 08:51:06,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 327 transitions. [2019-11-25 08:51:06,442 INFO L711 BuchiCegarLoop]: Abstraction has 306 states and 327 transitions. [2019-11-25 08:51:06,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:51:06,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:51:06,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:51:06,442 INFO L87 Difference]: Start difference. First operand 306 states and 327 transitions. Second operand 5 states. [2019-11-25 08:51:06,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:51:06,473 INFO L93 Difference]: Finished difference Result 191 states and 208 transitions. [2019-11-25 08:51:06,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:51:06,474 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 208 transitions. [2019-11-25 08:51:06,475 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 55 [2019-11-25 08:51:06,476 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 172 states and 189 transitions. [2019-11-25 08:51:06,477 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 54 [2019-11-25 08:51:06,477 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54 [2019-11-25 08:51:06,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 172 states and 189 transitions. [2019-11-25 08:51:06,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:06,479 INFO L688 BuchiCegarLoop]: Abstraction has 172 states and 189 transitions. [2019-11-25 08:51:06,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states and 189 transitions. [2019-11-25 08:51:06,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 107. [2019-11-25 08:51:06,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2019-11-25 08:51:06,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 117 transitions. [2019-11-25 08:51:06,482 INFO L711 BuchiCegarLoop]: Abstraction has 107 states and 117 transitions. [2019-11-25 08:51:06,482 INFO L591 BuchiCegarLoop]: Abstraction has 107 states and 117 transitions. [2019-11-25 08:51:06,482 INFO L424 BuchiCegarLoop]: ======== Iteration 18============ [2019-11-25 08:51:06,483 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 107 states and 117 transitions. [2019-11-25 08:51:06,484 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 53 [2019-11-25 08:51:06,484 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:51:06,484 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:51:06,486 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 9, 1, 1, 1] [2019-11-25 08:51:06,486 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [13, 12, 12, 10, 3, 1, 1] [2019-11-25 08:51:06,486 INFO L794 eck$LassoCheckResult]: Stem: 5692#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 5693#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5704#L12 assume !(10 == main_~i~0); 5702#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 5701#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5694#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5695#L12 assume !(10 == main_~i~0); 5792#L12-2 assume !(0 == main_~i~0); 5791#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5790#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5789#L12 assume !(10 == main_~i~0); 5788#L12-2 assume !(0 == main_~i~0); 5787#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5786#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5785#L12 assume !(10 == main_~i~0); 5784#L12-2 assume !(0 == main_~i~0); 5783#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5782#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5781#L12 assume !(10 == main_~i~0); 5780#L12-2 assume !(0 == main_~i~0); 5779#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5778#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5777#L12 assume !(10 == main_~i~0); 5776#L12-2 assume !(0 == main_~i~0); 5775#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5774#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5773#L12 assume !(10 == main_~i~0); 5772#L12-2 assume !(0 == main_~i~0); 5771#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5770#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5769#L12 assume !(10 == main_~i~0); 5768#L12-2 assume !(0 == main_~i~0); 5767#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5766#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5765#L12 assume !(10 == main_~i~0); 5764#L12-2 assume !(0 == main_~i~0); 5763#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5762#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5722#L12 assume !(10 == main_~i~0); 5760#L12-2 assume !(0 == main_~i~0); 5759#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5721#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5711#L12 assume 10 == main_~i~0;main_~up~0 := 0; 5688#L12-2 [2019-11-25 08:51:06,487 INFO L796 eck$LassoCheckResult]: Loop: 5688#L12-2 assume !(0 == main_~i~0); 5689#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5720#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5719#L12 assume !(10 == main_~i~0); 5718#L12-2 assume !(0 == main_~i~0); 5717#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5716#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5715#L12 assume !(10 == main_~i~0); 5708#L12-2 assume !(0 == main_~i~0); 5710#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5709#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5705#L12 assume !(10 == main_~i~0); 5707#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 5758#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5756#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5698#L12 assume !(10 == main_~i~0); 5699#L12-2 assume !(0 == main_~i~0); 5703#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5757#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5755#L12 assume !(10 == main_~i~0); 5754#L12-2 assume !(0 == main_~i~0); 5753#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5752#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5751#L12 assume !(10 == main_~i~0); 5750#L12-2 assume !(0 == main_~i~0); 5749#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5748#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5747#L12 assume !(10 == main_~i~0); 5746#L12-2 assume !(0 == main_~i~0); 5745#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5744#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5743#L12 assume !(10 == main_~i~0); 5742#L12-2 assume !(0 == main_~i~0); 5741#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5740#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5739#L12 assume !(10 == main_~i~0); 5738#L12-2 assume !(0 == main_~i~0); 5737#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5736#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5735#L12 assume !(10 == main_~i~0); 5734#L12-2 assume !(0 == main_~i~0); 5733#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5732#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5731#L12 assume !(10 == main_~i~0); 5730#L12-2 assume !(0 == main_~i~0); 5729#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5728#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5727#L12 assume !(10 == main_~i~0); 5726#L12-2 assume !(0 == main_~i~0); 5725#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5723#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5724#L12 assume 10 == main_~i~0;main_~up~0 := 0; 5688#L12-2 [2019-11-25 08:51:06,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:06,487 INFO L82 PathProgramCache]: Analyzing trace with hash 180435263, now seen corresponding path program 10 times [2019-11-25 08:51:06,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:06,487 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283793721] [2019-11-25 08:51:06,488 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:06,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:06,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:06,499 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:06,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:06,499 INFO L82 PathProgramCache]: Analyzing trace with hash -690818020, now seen corresponding path program 10 times [2019-11-25 08:51:06,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:06,500 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589969410] [2019-11-25 08:51:06,500 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:06,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:06,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:06,512 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:06,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:06,513 INFO L82 PathProgramCache]: Analyzing trace with hash -120542630, now seen corresponding path program 3 times [2019-11-25 08:51:06,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:06,513 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494513862] [2019-11-25 08:51:06,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:06,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:06,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 672 proven. 15 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2019-11-25 08:51:06,557 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494513862] [2019-11-25 08:51:06,557 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996660593] [2019-11-25 08:51:06,557 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:51:06,598 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2019-11-25 08:51:06,598 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:51:06,599 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:51:06,600 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:06,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 672 proven. 15 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2019-11-25 08:51:06,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:51:06,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-11-25 08:51:06,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100975658] [2019-11-25 08:51:06,831 WARN L192 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 52 [2019-11-25 08:51:06,839 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:06,839 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:06,839 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:06,839 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:06,839 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:51:06,839 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:06,839 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:06,839 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:06,839 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration18_Loop [2019-11-25 08:51:06,840 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:06,840 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:06,840 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:06,848 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:06,852 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:06,856 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Exception during sending of exit command (exit): Broken pipe [2019-11-25 08:51:06,916 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:06,916 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 64 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 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:06,924 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:06,924 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:51:06,927 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:51:06,927 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_13=1} Honda state: {v_rep~unnamed0~0~true_13=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 65 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 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:06,931 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:06,931 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 66 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 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:06,937 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:51:06,937 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:51:06,941 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:51:06,942 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:06,942 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:06,943 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:06,943 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:06,943 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:51:06,943 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:06,943 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:06,943 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:06,943 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration18_Loop [2019-11-25 08:51:06,943 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:06,943 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:06,944 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:06,948 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:06,950 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:06,952 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:06,999 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:06,999 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 67 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 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:07,003 INFO L120 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 [2019-11-25 08:51:07,004 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:07,004 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:51:07,004 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:07,004 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:07,004 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:07,005 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:51:07,005 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:51:07,007 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:51:07,008 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:51:07,008 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 68 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 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:07,012 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:51:07,012 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:51:07,012 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:51:07,012 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 13 Supporting invariants [] [2019-11-25 08:51:07,013 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:51:07,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:07,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:07,035 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:51:07,035 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:07,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:07,047 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-25 08:51:07,048 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:07,076 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2019-11-25 08:51:07,076 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 [2019-11-25 08:51:07,076 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 107 states and 117 transitions. cyclomatic complexity: 13 Second operand 7 states. [2019-11-25 08:51:07,287 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 107 states and 117 transitions. cyclomatic complexity: 13. Second operand 7 states. Result 431 states and 470 transitions. Complement of second has 19 states. [2019-11-25 08:51:07,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 1 stem states 8 non-accepting loop states 1 accepting loop states [2019-11-25 08:51:07,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-25 08:51:07,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 44 transitions. [2019-11-25 08:51:07,290 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 44 transitions. Stem has 43 letters. Loop has 52 letters. [2019-11-25 08:51:07,290 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:07,291 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 44 transitions. Stem has 95 letters. Loop has 52 letters. [2019-11-25 08:51:07,291 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:07,291 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 44 transitions. Stem has 43 letters. Loop has 104 letters. [2019-11-25 08:51:07,292 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:07,292 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 431 states and 470 transitions. [2019-11-25 08:51:07,295 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 57 [2019-11-25 08:51:07,298 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 431 states to 366 states and 398 transitions. [2019-11-25 08:51:07,298 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 81 [2019-11-25 08:51:07,298 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 92 [2019-11-25 08:51:07,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 366 states and 398 transitions. [2019-11-25 08:51:07,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:07,299 INFO L688 BuchiCegarLoop]: Abstraction has 366 states and 398 transitions. [2019-11-25 08:51:07,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states and 398 transitions. [2019-11-25 08:51:07,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 314. [2019-11-25 08:51:07,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2019-11-25 08:51:07,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 337 transitions. [2019-11-25 08:51:07,305 INFO L711 BuchiCegarLoop]: Abstraction has 314 states and 337 transitions. [2019-11-25 08:51:07,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:51:07,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:51:07,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:51:07,306 INFO L87 Difference]: Start difference. First operand 314 states and 337 transitions. Second operand 6 states. [2019-11-25 08:51:07,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:51:07,342 INFO L93 Difference]: Finished difference Result 215 states and 236 transitions. [2019-11-25 08:51:07,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:51:07,345 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 215 states and 236 transitions. [2019-11-25 08:51:07,347 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 59 [2019-11-25 08:51:07,348 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 215 states to 188 states and 209 transitions. [2019-11-25 08:51:07,349 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 54 [2019-11-25 08:51:07,349 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54 [2019-11-25 08:51:07,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 188 states and 209 transitions. [2019-11-25 08:51:07,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:07,349 INFO L688 BuchiCegarLoop]: Abstraction has 188 states and 209 transitions. [2019-11-25 08:51:07,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states and 209 transitions. [2019-11-25 08:51:07,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 115. [2019-11-25 08:51:07,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2019-11-25 08:51:07,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 127 transitions. [2019-11-25 08:51:07,352 INFO L711 BuchiCegarLoop]: Abstraction has 115 states and 127 transitions. [2019-11-25 08:51:07,352 INFO L591 BuchiCegarLoop]: Abstraction has 115 states and 127 transitions. [2019-11-25 08:51:07,352 INFO L424 BuchiCegarLoop]: ======== Iteration 19============ [2019-11-25 08:51:07,352 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 115 states and 127 transitions. [2019-11-25 08:51:07,353 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 57 [2019-11-25 08:51:07,353 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:51:07,353 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:51:07,355 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 9, 1, 1, 1] [2019-11-25 08:51:07,355 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [14, 13, 13, 10, 4, 1, 1] [2019-11-25 08:51:07,356 INFO L794 eck$LassoCheckResult]: Stem: 7379#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 7380#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 7395#L12 assume !(10 == main_~i~0); 7389#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 7388#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 7381#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 7382#L12 assume !(10 == main_~i~0); 7483#L12-2 assume !(0 == main_~i~0); 7482#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 7481#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 7480#L12 assume !(10 == main_~i~0); 7479#L12-2 assume !(0 == main_~i~0); 7478#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 7477#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 7476#L12 assume !(10 == main_~i~0); 7475#L12-2 assume !(0 == main_~i~0); 7474#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 7473#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 7472#L12 assume !(10 == main_~i~0); 7471#L12-2 assume !(0 == main_~i~0); 7470#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 7469#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 7468#L12 assume !(10 == main_~i~0); 7467#L12-2 assume !(0 == main_~i~0); 7466#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 7465#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 7464#L12 assume !(10 == main_~i~0); 7463#L12-2 assume !(0 == main_~i~0); 7462#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 7461#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 7460#L12 assume !(10 == main_~i~0); 7459#L12-2 assume !(0 == main_~i~0); 7458#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 7457#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 7456#L12 assume !(10 == main_~i~0); 7455#L12-2 assume !(0 == main_~i~0); 7454#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 7453#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 7413#L12 assume !(10 == main_~i~0); 7451#L12-2 assume !(0 == main_~i~0); 7450#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 7412#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 7398#L12 assume 10 == main_~i~0;main_~up~0 := 0; 7375#L12-2 [2019-11-25 08:51:07,356 INFO L796 eck$LassoCheckResult]: Loop: 7375#L12-2 assume !(0 == main_~i~0); 7376#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 7411#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 7410#L12 assume !(10 == main_~i~0); 7409#L12-2 assume !(0 == main_~i~0); 7408#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 7407#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 7406#L12 assume !(10 == main_~i~0); 7405#L12-2 assume !(0 == main_~i~0); 7404#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 7403#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 7402#L12 assume !(10 == main_~i~0); 7394#L12-2 assume !(0 == main_~i~0); 7397#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 7396#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 7391#L12 assume !(10 == main_~i~0); 7393#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 7449#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 7447#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 7385#L12 assume !(10 == main_~i~0); 7386#L12-2 assume !(0 == main_~i~0); 7390#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 7448#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 7446#L12 assume !(10 == main_~i~0); 7445#L12-2 assume !(0 == main_~i~0); 7444#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 7443#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 7442#L12 assume !(10 == main_~i~0); 7441#L12-2 assume !(0 == main_~i~0); 7440#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 7439#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 7438#L12 assume !(10 == main_~i~0); 7437#L12-2 assume !(0 == main_~i~0); 7436#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 7435#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 7434#L12 assume !(10 == main_~i~0); 7433#L12-2 assume !(0 == main_~i~0); 7432#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 7431#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 7430#L12 assume !(10 == main_~i~0); 7429#L12-2 assume !(0 == main_~i~0); 7428#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 7427#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 7426#L12 assume !(10 == main_~i~0); 7425#L12-2 assume !(0 == main_~i~0); 7424#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 7423#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 7422#L12 assume !(10 == main_~i~0); 7421#L12-2 assume !(0 == main_~i~0); 7420#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 7419#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 7418#L12 assume !(10 == main_~i~0); 7417#L12-2 assume !(0 == main_~i~0); 7416#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 7414#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 7415#L12 assume 10 == main_~i~0;main_~up~0 := 0; 7375#L12-2 [2019-11-25 08:51:07,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:07,356 INFO L82 PathProgramCache]: Analyzing trace with hash 180435263, now seen corresponding path program 11 times [2019-11-25 08:51:07,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:07,357 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828005944] [2019-11-25 08:51:07,357 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:07,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:07,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:07,372 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:07,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:07,373 INFO L82 PathProgramCache]: Analyzing trace with hash 805924487, now seen corresponding path program 11 times [2019-11-25 08:51:07,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:07,374 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933631265] [2019-11-25 08:51:07,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:07,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:07,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:07,386 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:07,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:07,387 INFO L82 PathProgramCache]: Analyzing trace with hash 329635269, now seen corresponding path program 4 times [2019-11-25 08:51:07,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:07,388 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885990552] [2019-11-25 08:51:07,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:07,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:07,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 753 proven. 28 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2019-11-25 08:51:07,446 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885990552] [2019-11-25 08:51:07,447 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751926586] [2019-11-25 08:51:07,447 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:51:07,491 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-25 08:51:07,492 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:51:07,492 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:51:07,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:07,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 753 proven. 28 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2019-11-25 08:51:07,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:51:07,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2019-11-25 08:51:07,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952302363] [2019-11-25 08:51:07,754 WARN L192 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 61 [2019-11-25 08:51:07,769 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:07,769 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:07,769 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:07,769 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:07,769 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:51:07,769 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:07,769 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:07,769 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:07,769 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration19_Loop [2019-11-25 08:51:07,769 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:07,770 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:07,770 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:07,779 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:07,784 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:07,787 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:07,865 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:07,865 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 70 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 70 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:07,869 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:07,870 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:51:07,873 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:51:07,873 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_15=1} Honda state: {v_rep~unnamed0~0~true_15=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 71 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 71 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:07,877 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:07,877 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:51:07,881 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:51:07,881 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=0} Honda state: {ULTIMATE.start_main_~up~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 72 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 72 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:07,886 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:07,886 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:51:07,889 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:51:07,889 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_15=0} Honda state: {v_rep~unnamed0~0~false_15=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 73 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 73 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:07,893 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:07,894 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 74 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 74 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:07,901 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:51:07,901 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:51:07,913 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:51:07,914 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:07,914 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:07,914 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:07,914 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:07,915 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:51:07,915 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:07,915 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:07,915 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:07,915 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration19_Loop [2019-11-25 08:51:07,915 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:07,915 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:07,916 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:07,918 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:07,922 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:07,935 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:08,009 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:08,009 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 75 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 75 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:08,016 INFO L120 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 [2019-11-25 08:51:08,017 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:08,017 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:08,017 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:08,017 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:08,018 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:51:08,019 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:51:08,021 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 76 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 76 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:08,025 INFO L120 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 [2019-11-25 08:51:08,026 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:08,026 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:51:08,026 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:08,027 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-25 08:51:08,027 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:08,028 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-25 08:51:08,028 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:51:08,029 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 77 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 77 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:08,034 INFO L120 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 [2019-11-25 08:51:08,035 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:08,035 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:51:08,035 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:08,035 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:08,035 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:08,036 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:51:08,036 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:51:08,038 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:51:08,039 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:51:08,040 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 78 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 78 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:08,042 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:51:08,042 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:51:08,043 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:51:08,043 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 7 Supporting invariants [] [2019-11-25 08:51:08,044 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:51:08,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:08,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:08,065 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:51:08,066 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:08,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:08,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:51:08,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:08,140 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 193 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2019-11-25 08:51:08,141 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 6 loop predicates [2019-11-25 08:51:08,141 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 115 states and 127 transitions. cyclomatic complexity: 15 Second operand 8 states. [2019-11-25 08:51:08,344 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 115 states and 127 transitions. cyclomatic complexity: 15. Second operand 8 states. Result 511 states and 566 transitions. Complement of second has 23 states. [2019-11-25 08:51:08,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 1 stem states 10 non-accepting loop states 1 accepting loop states [2019-11-25 08:51:08,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-25 08:51:08,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 53 transitions. [2019-11-25 08:51:08,350 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 53 transitions. Stem has 43 letters. Loop has 56 letters. [2019-11-25 08:51:08,351 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:08,351 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 53 transitions. Stem has 99 letters. Loop has 56 letters. [2019-11-25 08:51:08,351 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:08,352 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 53 transitions. Stem has 43 letters. Loop has 112 letters. [2019-11-25 08:51:08,353 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:08,353 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 511 states and 566 transitions. [2019-11-25 08:51:08,357 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 61 [2019-11-25 08:51:08,359 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 511 states to 410 states and 452 transitions. [2019-11-25 08:51:08,359 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 77 [2019-11-25 08:51:08,360 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 92 [2019-11-25 08:51:08,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 410 states and 452 transitions. [2019-11-25 08:51:08,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:08,360 INFO L688 BuchiCegarLoop]: Abstraction has 410 states and 452 transitions. [2019-11-25 08:51:08,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states and 452 transitions. [2019-11-25 08:51:08,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 322. [2019-11-25 08:51:08,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2019-11-25 08:51:08,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 347 transitions. [2019-11-25 08:51:08,368 INFO L711 BuchiCegarLoop]: Abstraction has 322 states and 347 transitions. [2019-11-25 08:51:08,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:51:08,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-25 08:51:08,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:51:08,368 INFO L87 Difference]: Start difference. First operand 322 states and 347 transitions. Second operand 7 states. [2019-11-25 08:51:08,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:51:08,442 INFO L93 Difference]: Finished difference Result 239 states and 264 transitions. [2019-11-25 08:51:08,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-25 08:51:08,443 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 239 states and 264 transitions. [2019-11-25 08:51:08,444 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 63 [2019-11-25 08:51:08,446 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 239 states to 204 states and 229 transitions. [2019-11-25 08:51:08,446 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 54 [2019-11-25 08:51:08,446 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54 [2019-11-25 08:51:08,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 204 states and 229 transitions. [2019-11-25 08:51:08,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:08,447 INFO L688 BuchiCegarLoop]: Abstraction has 204 states and 229 transitions. [2019-11-25 08:51:08,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states and 229 transitions. [2019-11-25 08:51:08,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 123. [2019-11-25 08:51:08,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2019-11-25 08:51:08,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 137 transitions. [2019-11-25 08:51:08,450 INFO L711 BuchiCegarLoop]: Abstraction has 123 states and 137 transitions. [2019-11-25 08:51:08,451 INFO L591 BuchiCegarLoop]: Abstraction has 123 states and 137 transitions. [2019-11-25 08:51:08,451 INFO L424 BuchiCegarLoop]: ======== Iteration 20============ [2019-11-25 08:51:08,451 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 123 states and 137 transitions. [2019-11-25 08:51:08,452 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 61 [2019-11-25 08:51:08,452 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:51:08,452 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:51:08,453 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 9, 1, 1, 1] [2019-11-25 08:51:08,453 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [15, 14, 14, 10, 5, 1, 1] [2019-11-25 08:51:08,453 INFO L794 eck$LassoCheckResult]: Stem: 9219#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 9220#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 9235#L12 assume !(10 == main_~i~0); 9229#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 9228#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 9221#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 9222#L12 assume !(10 == main_~i~0); 9327#L12-2 assume !(0 == main_~i~0); 9326#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 9325#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 9324#L12 assume !(10 == main_~i~0); 9323#L12-2 assume !(0 == main_~i~0); 9322#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 9321#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 9320#L12 assume !(10 == main_~i~0); 9319#L12-2 assume !(0 == main_~i~0); 9318#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 9317#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 9316#L12 assume !(10 == main_~i~0); 9315#L12-2 assume !(0 == main_~i~0); 9314#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 9313#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 9312#L12 assume !(10 == main_~i~0); 9311#L12-2 assume !(0 == main_~i~0); 9310#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 9309#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 9308#L12 assume !(10 == main_~i~0); 9307#L12-2 assume !(0 == main_~i~0); 9306#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 9305#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 9304#L12 assume !(10 == main_~i~0); 9303#L12-2 assume !(0 == main_~i~0); 9302#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 9301#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 9300#L12 assume !(10 == main_~i~0); 9299#L12-2 assume !(0 == main_~i~0); 9298#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 9297#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 9257#L12 assume !(10 == main_~i~0); 9295#L12-2 assume !(0 == main_~i~0); 9294#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 9256#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 9238#L12 assume 10 == main_~i~0;main_~up~0 := 0; 9215#L12-2 [2019-11-25 08:51:08,454 INFO L796 eck$LassoCheckResult]: Loop: 9215#L12-2 assume !(0 == main_~i~0); 9216#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 9255#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 9254#L12 assume !(10 == main_~i~0); 9253#L12-2 assume !(0 == main_~i~0); 9252#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 9251#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 9250#L12 assume !(10 == main_~i~0); 9249#L12-2 assume !(0 == main_~i~0); 9248#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 9247#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 9246#L12 assume !(10 == main_~i~0); 9245#L12-2 assume !(0 == main_~i~0); 9244#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 9243#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 9242#L12 assume !(10 == main_~i~0); 9234#L12-2 assume !(0 == main_~i~0); 9237#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 9236#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 9231#L12 assume !(10 == main_~i~0); 9233#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 9293#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 9291#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 9225#L12 assume !(10 == main_~i~0); 9226#L12-2 assume !(0 == main_~i~0); 9230#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 9292#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 9290#L12 assume !(10 == main_~i~0); 9289#L12-2 assume !(0 == main_~i~0); 9288#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 9287#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 9286#L12 assume !(10 == main_~i~0); 9285#L12-2 assume !(0 == main_~i~0); 9284#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 9283#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 9282#L12 assume !(10 == main_~i~0); 9281#L12-2 assume !(0 == main_~i~0); 9280#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 9279#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 9278#L12 assume !(10 == main_~i~0); 9277#L12-2 assume !(0 == main_~i~0); 9276#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 9275#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 9274#L12 assume !(10 == main_~i~0); 9273#L12-2 assume !(0 == main_~i~0); 9272#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 9271#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 9270#L12 assume !(10 == main_~i~0); 9269#L12-2 assume !(0 == main_~i~0); 9268#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 9267#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 9266#L12 assume !(10 == main_~i~0); 9265#L12-2 assume !(0 == main_~i~0); 9264#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 9263#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 9262#L12 assume !(10 == main_~i~0); 9261#L12-2 assume !(0 == main_~i~0); 9260#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 9258#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 9259#L12 assume 10 == main_~i~0;main_~up~0 := 0; 9215#L12-2 [2019-11-25 08:51:08,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:08,454 INFO L82 PathProgramCache]: Analyzing trace with hash 180435263, now seen corresponding path program 12 times [2019-11-25 08:51:08,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:08,455 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966391707] [2019-11-25 08:51:08,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:08,468 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:08,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:08,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1151943822, now seen corresponding path program 12 times [2019-11-25 08:51:08,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:08,469 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389382320] [2019-11-25 08:51:08,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:08,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:08,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:08,483 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:08,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:08,484 INFO L82 PathProgramCache]: Analyzing trace with hash 533812144, now seen corresponding path program 5 times [2019-11-25 08:51:08,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:08,484 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454319543] [2019-11-25 08:51:08,484 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:08,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:08,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 834 proven. 45 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2019-11-25 08:51:08,562 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454319543] [2019-11-25 08:51:08,563 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496882307] [2019-11-25 08:51:08,563 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:51:08,630 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2019-11-25 08:51:08,630 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:51:08,631 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-25 08:51:08,632 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:08,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 834 proven. 45 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2019-11-25 08:51:08,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:51:08,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2019-11-25 08:51:08,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53607567] [2019-11-25 08:51:09,023 WARN L192 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 62 [2019-11-25 08:51:09,036 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:09,036 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:09,036 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:09,037 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:09,037 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:51:09,037 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:09,037 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:09,037 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:09,037 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration20_Loop [2019-11-25 08:51:09,037 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:09,037 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:09,038 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:09,041 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:09,046 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:09,049 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:09,120 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:09,120 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 80 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:09,129 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:09,129 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 80 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:09,133 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:51:09,134 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_17=1} Honda state: {v_rep~unnamed0~0~true_17=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 81 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:09,143 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:09,143 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 81 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:09,148 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:51:09,148 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=0} Honda state: {ULTIMATE.start_main_~up~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 82 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:09,158 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:09,158 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 82 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:09,162 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:51:09,162 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_17=0} Honda state: {v_rep~unnamed0~0~false_17=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 83 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:09,171 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:09,171 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 83 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 84 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:09,181 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:51:09,181 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 84 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:09,191 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:51:09,193 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:09,193 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:09,194 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:09,194 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:09,194 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:51:09,194 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:09,194 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:09,194 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:09,194 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration20_Loop [2019-11-25 08:51:09,194 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:09,194 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:09,195 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:09,198 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:09,203 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:09,205 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:09,270 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:09,270 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 85 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 85 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:09,275 INFO L120 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 [2019-11-25 08:51:09,276 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:09,276 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:09,276 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:09,277 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:09,278 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:51:09,278 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:51:09,281 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 86 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:09,286 INFO L120 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 [2019-11-25 08:51:09,287 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:09,288 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:51:09,288 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:09,288 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-25 08:51:09,288 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:09,289 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-25 08:51:09,289 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 86 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:09,293 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 87 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:09,302 INFO L120 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 [2019-11-25 08:51:09,303 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:09,303 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:09,303 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:09,304 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:09,306 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:51:09,306 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 87 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:09,314 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 88 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 88 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:09,318 INFO L120 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 [2019-11-25 08:51:09,319 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:09,319 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:51:09,319 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:09,319 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:09,319 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:09,320 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:51:09,320 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:51:09,322 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:51:09,323 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:51:09,323 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 89 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 89 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:09,326 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:51:09,326 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:51:09,326 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:51:09,326 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 15 Supporting invariants [] [2019-11-25 08:51:09,327 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:51:09,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:09,354 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:51:09,354 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:09,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:09,382 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-25 08:51:09,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:09,444 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 249 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2019-11-25 08:51:09,444 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 7 loop predicates [2019-11-25 08:51:09,445 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 123 states and 137 transitions. cyclomatic complexity: 17 Second operand 9 states. [2019-11-25 08:51:09,720 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 123 states and 137 transitions. cyclomatic complexity: 17. Second operand 9 states. Result 607 states and 682 transitions. Complement of second has 27 states. [2019-11-25 08:51:09,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 1 stem states 12 non-accepting loop states 1 accepting loop states [2019-11-25 08:51:09,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-25 08:51:09,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 62 transitions. [2019-11-25 08:51:09,721 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 62 transitions. Stem has 43 letters. Loop has 60 letters. [2019-11-25 08:51:09,722 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:09,722 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 62 transitions. Stem has 103 letters. Loop has 60 letters. [2019-11-25 08:51:09,722 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:09,722 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 62 transitions. Stem has 43 letters. Loop has 120 letters. [2019-11-25 08:51:09,723 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:09,723 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 607 states and 682 transitions. [2019-11-25 08:51:09,726 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 65 [2019-11-25 08:51:09,728 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 607 states to 462 states and 516 transitions. [2019-11-25 08:51:09,728 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 73 [2019-11-25 08:51:09,729 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 92 [2019-11-25 08:51:09,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 462 states and 516 transitions. [2019-11-25 08:51:09,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:09,729 INFO L688 BuchiCegarLoop]: Abstraction has 462 states and 516 transitions. [2019-11-25 08:51:09,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states and 516 transitions. [2019-11-25 08:51:09,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 330. [2019-11-25 08:51:09,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2019-11-25 08:51:09,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 357 transitions. [2019-11-25 08:51:09,735 INFO L711 BuchiCegarLoop]: Abstraction has 330 states and 357 transitions. [2019-11-25 08:51:09,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:51:09,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-25 08:51:09,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:51:09,736 INFO L87 Difference]: Start difference. First operand 330 states and 357 transitions. Second operand 8 states. [2019-11-25 08:51:09,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:51:09,793 INFO L93 Difference]: Finished difference Result 263 states and 292 transitions. [2019-11-25 08:51:09,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-25 08:51:09,794 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 263 states and 292 transitions. [2019-11-25 08:51:09,795 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 67 [2019-11-25 08:51:09,796 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 263 states to 220 states and 249 transitions. [2019-11-25 08:51:09,796 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 54 [2019-11-25 08:51:09,796 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54 [2019-11-25 08:51:09,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 220 states and 249 transitions. [2019-11-25 08:51:09,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:09,796 INFO L688 BuchiCegarLoop]: Abstraction has 220 states and 249 transitions. [2019-11-25 08:51:09,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states and 249 transitions. [2019-11-25 08:51:09,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 131. [2019-11-25 08:51:09,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2019-11-25 08:51:09,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 147 transitions. [2019-11-25 08:51:09,798 INFO L711 BuchiCegarLoop]: Abstraction has 131 states and 147 transitions. [2019-11-25 08:51:09,798 INFO L591 BuchiCegarLoop]: Abstraction has 131 states and 147 transitions. [2019-11-25 08:51:09,798 INFO L424 BuchiCegarLoop]: ======== Iteration 21============ [2019-11-25 08:51:09,799 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 131 states and 147 transitions. [2019-11-25 08:51:09,799 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 65 [2019-11-25 08:51:09,799 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:51:09,799 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:51:09,800 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 9, 1, 1, 1] [2019-11-25 08:51:09,800 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [16, 15, 15, 10, 6, 1, 1] [2019-11-25 08:51:09,801 INFO L794 eck$LassoCheckResult]: Stem: 11228#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 11229#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 11240#L12 assume !(10 == main_~i~0); 11238#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 11237#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11230#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 11231#L12 assume !(10 == main_~i~0); 11340#L12-2 assume !(0 == main_~i~0); 11339#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11338#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 11337#L12 assume !(10 == main_~i~0); 11336#L12-2 assume !(0 == main_~i~0); 11335#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11334#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 11333#L12 assume !(10 == main_~i~0); 11332#L12-2 assume !(0 == main_~i~0); 11331#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11330#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 11329#L12 assume !(10 == main_~i~0); 11328#L12-2 assume !(0 == main_~i~0); 11327#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11326#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 11325#L12 assume !(10 == main_~i~0); 11324#L12-2 assume !(0 == main_~i~0); 11323#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11322#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 11321#L12 assume !(10 == main_~i~0); 11320#L12-2 assume !(0 == main_~i~0); 11319#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11318#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 11317#L12 assume !(10 == main_~i~0); 11316#L12-2 assume !(0 == main_~i~0); 11315#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11314#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 11313#L12 assume !(10 == main_~i~0); 11312#L12-2 assume !(0 == main_~i~0); 11311#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11310#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 11270#L12 assume !(10 == main_~i~0); 11308#L12-2 assume !(0 == main_~i~0); 11307#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11269#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 11247#L12 assume 10 == main_~i~0;main_~up~0 := 0; 11224#L12-2 [2019-11-25 08:51:09,801 INFO L796 eck$LassoCheckResult]: Loop: 11224#L12-2 assume !(0 == main_~i~0); 11225#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 11268#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 11267#L12 assume !(10 == main_~i~0); 11266#L12-2 assume !(0 == main_~i~0); 11265#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 11264#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 11263#L12 assume !(10 == main_~i~0); 11262#L12-2 assume !(0 == main_~i~0); 11261#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 11260#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 11259#L12 assume !(10 == main_~i~0); 11258#L12-2 assume !(0 == main_~i~0); 11257#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 11256#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 11255#L12 assume !(10 == main_~i~0); 11254#L12-2 assume !(0 == main_~i~0); 11253#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 11252#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 11251#L12 assume !(10 == main_~i~0); 11244#L12-2 assume !(0 == main_~i~0); 11246#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 11245#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 11241#L12 assume !(10 == main_~i~0); 11243#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 11306#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11304#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 11234#L12 assume !(10 == main_~i~0); 11235#L12-2 assume !(0 == main_~i~0); 11239#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11305#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 11303#L12 assume !(10 == main_~i~0); 11302#L12-2 assume !(0 == main_~i~0); 11301#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11300#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 11299#L12 assume !(10 == main_~i~0); 11298#L12-2 assume !(0 == main_~i~0); 11297#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11296#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 11295#L12 assume !(10 == main_~i~0); 11294#L12-2 assume !(0 == main_~i~0); 11293#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11292#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 11291#L12 assume !(10 == main_~i~0); 11290#L12-2 assume !(0 == main_~i~0); 11289#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11288#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 11287#L12 assume !(10 == main_~i~0); 11286#L12-2 assume !(0 == main_~i~0); 11285#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11284#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 11283#L12 assume !(10 == main_~i~0); 11282#L12-2 assume !(0 == main_~i~0); 11281#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11280#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 11279#L12 assume !(10 == main_~i~0); 11278#L12-2 assume !(0 == main_~i~0); 11277#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11276#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 11275#L12 assume !(10 == main_~i~0); 11274#L12-2 assume !(0 == main_~i~0); 11273#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11271#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 11272#L12 assume 10 == main_~i~0;main_~up~0 := 0; 11224#L12-2 [2019-11-25 08:51:09,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:09,801 INFO L82 PathProgramCache]: Analyzing trace with hash 180435263, now seen corresponding path program 13 times [2019-11-25 08:51:09,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:09,802 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204972772] [2019-11-25 08:51:09,802 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:09,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:09,812 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:09,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:09,812 INFO L82 PathProgramCache]: Analyzing trace with hash 336435933, now seen corresponding path program 13 times [2019-11-25 08:51:09,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:09,812 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233360493] [2019-11-25 08:51:09,813 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:09,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:09,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:09,824 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:09,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:09,825 INFO L82 PathProgramCache]: Analyzing trace with hash 216392731, now seen corresponding path program 6 times [2019-11-25 08:51:09,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:09,825 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020314881] [2019-11-25 08:51:09,825 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:09,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:09,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 915 proven. 66 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2019-11-25 08:51:09,899 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020314881] [2019-11-25 08:51:09,899 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651794529] [2019-11-25 08:51:09,899 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:51:09,956 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2019-11-25 08:51:09,957 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:51:09,957 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:51:09,959 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:09,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 915 proven. 66 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2019-11-25 08:51:09,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:51:09,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2019-11-25 08:51:09,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785433555] [2019-11-25 08:51:10,299 WARN L192 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 61 [2019-11-25 08:51:10,309 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:10,309 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:10,309 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:10,309 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:10,310 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:51:10,310 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:10,310 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:10,310 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:10,310 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration21_Loop [2019-11-25 08:51:10,310 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:10,310 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:10,310 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:10,317 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:10,321 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:10,323 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:10,389 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:10,389 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 91 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:10,394 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:10,394 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 91 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:10,398 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:51:10,398 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=0} Honda state: {ULTIMATE.start_main_~up~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 92 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:10,404 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:10,404 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 92 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 93 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:10,414 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:51:10,414 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 93 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:10,418 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:51:10,420 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:10,420 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:10,420 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:10,420 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:10,420 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:51:10,420 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:10,420 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:10,420 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:10,420 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration21_Loop [2019-11-25 08:51:10,420 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:10,420 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:10,421 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:10,426 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:10,428 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:10,430 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:10,474 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:10,474 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 94 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 94 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:10,477 INFO L120 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 [2019-11-25 08:51:10,478 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:10,478 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:51:10,478 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:10,478 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-25 08:51:10,478 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:10,479 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-25 08:51:10,479 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:51:10,481 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 95 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 95 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:10,485 INFO L120 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 [2019-11-25 08:51:10,486 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:10,486 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:10,486 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:10,486 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:10,489 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:51:10,489 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:51:10,491 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 96 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 96 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:10,495 INFO L120 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 [2019-11-25 08:51:10,496 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:10,496 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:10,496 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:10,496 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:10,497 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:51:10,498 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:51:10,500 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 97 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 97 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:10,504 INFO L120 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 [2019-11-25 08:51:10,505 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:10,505 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:51:10,505 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:10,506 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:10,506 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:10,506 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:51:10,506 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:51:10,508 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:51:10,510 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:51:10,510 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 98 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 98 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:10,513 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:51:10,513 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:51:10,513 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:51:10,513 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 8 Supporting invariants [] [2019-11-25 08:51:10,514 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:51:10,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:10,537 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:51:10,537 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:10,562 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-25 08:51:10,563 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:10,638 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 309 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2019-11-25 08:51:10,639 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 8 loop predicates [2019-11-25 08:51:10,639 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 131 states and 147 transitions. cyclomatic complexity: 19 Second operand 10 states. [2019-11-25 08:51:10,933 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 131 states and 147 transitions. cyclomatic complexity: 19. Second operand 10 states. Result 719 states and 818 transitions. Complement of second has 31 states. [2019-11-25 08:51:10,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 16 states 1 stem states 14 non-accepting loop states 1 accepting loop states [2019-11-25 08:51:10,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-25 08:51:10,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 71 transitions. [2019-11-25 08:51:10,934 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 71 transitions. Stem has 43 letters. Loop has 64 letters. [2019-11-25 08:51:10,935 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:10,935 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 71 transitions. Stem has 107 letters. Loop has 64 letters. [2019-11-25 08:51:10,935 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:10,935 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 71 transitions. Stem has 43 letters. Loop has 128 letters. [2019-11-25 08:51:10,936 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:10,936 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 719 states and 818 transitions. [2019-11-25 08:51:10,939 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 69 [2019-11-25 08:51:10,943 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 719 states to 522 states and 590 transitions. [2019-11-25 08:51:10,943 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 69 [2019-11-25 08:51:10,943 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 92 [2019-11-25 08:51:10,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 522 states and 590 transitions. [2019-11-25 08:51:10,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:10,944 INFO L688 BuchiCegarLoop]: Abstraction has 522 states and 590 transitions. [2019-11-25 08:51:10,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states and 590 transitions. [2019-11-25 08:51:10,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 338. [2019-11-25 08:51:10,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2019-11-25 08:51:10,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 367 transitions. [2019-11-25 08:51:10,950 INFO L711 BuchiCegarLoop]: Abstraction has 338 states and 367 transitions. [2019-11-25 08:51:10,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:51:10,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-25 08:51:10,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-11-25 08:51:10,951 INFO L87 Difference]: Start difference. First operand 338 states and 367 transitions. Second operand 9 states. [2019-11-25 08:51:11,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:51:11,006 INFO L93 Difference]: Finished difference Result 287 states and 320 transitions. [2019-11-25 08:51:11,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-25 08:51:11,007 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 287 states and 320 transitions. [2019-11-25 08:51:11,008 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 71 [2019-11-25 08:51:11,009 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 287 states to 236 states and 269 transitions. [2019-11-25 08:51:11,009 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 54 [2019-11-25 08:51:11,009 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54 [2019-11-25 08:51:11,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 236 states and 269 transitions. [2019-11-25 08:51:11,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:11,009 INFO L688 BuchiCegarLoop]: Abstraction has 236 states and 269 transitions. [2019-11-25 08:51:11,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states and 269 transitions. [2019-11-25 08:51:11,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 139. [2019-11-25 08:51:11,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2019-11-25 08:51:11,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 157 transitions. [2019-11-25 08:51:11,012 INFO L711 BuchiCegarLoop]: Abstraction has 139 states and 157 transitions. [2019-11-25 08:51:11,013 INFO L591 BuchiCegarLoop]: Abstraction has 139 states and 157 transitions. [2019-11-25 08:51:11,013 INFO L424 BuchiCegarLoop]: ======== Iteration 22============ [2019-11-25 08:51:11,013 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 139 states and 157 transitions. [2019-11-25 08:51:11,013 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 69 [2019-11-25 08:51:11,014 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:51:11,014 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:51:11,015 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 9, 1, 1, 1] [2019-11-25 08:51:11,015 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [17, 16, 16, 10, 7, 1, 1] [2019-11-25 08:51:11,015 INFO L794 eck$LassoCheckResult]: Stem: 13422#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 13423#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13434#L12 assume !(10 == main_~i~0); 13432#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 13431#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13424#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13425#L12 assume !(10 == main_~i~0); 13538#L12-2 assume !(0 == main_~i~0); 13537#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13536#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13535#L12 assume !(10 == main_~i~0); 13534#L12-2 assume !(0 == main_~i~0); 13533#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13532#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13531#L12 assume !(10 == main_~i~0); 13530#L12-2 assume !(0 == main_~i~0); 13529#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13528#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13527#L12 assume !(10 == main_~i~0); 13526#L12-2 assume !(0 == main_~i~0); 13525#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13524#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13523#L12 assume !(10 == main_~i~0); 13522#L12-2 assume !(0 == main_~i~0); 13521#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13520#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13519#L12 assume !(10 == main_~i~0); 13518#L12-2 assume !(0 == main_~i~0); 13517#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13516#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13515#L12 assume !(10 == main_~i~0); 13514#L12-2 assume !(0 == main_~i~0); 13513#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13512#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13511#L12 assume !(10 == main_~i~0); 13510#L12-2 assume !(0 == main_~i~0); 13509#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13508#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13468#L12 assume !(10 == main_~i~0); 13506#L12-2 assume !(0 == main_~i~0); 13505#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13467#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13441#L12 assume 10 == main_~i~0;main_~up~0 := 0; 13418#L12-2 [2019-11-25 08:51:11,015 INFO L796 eck$LassoCheckResult]: Loop: 13418#L12-2 assume !(0 == main_~i~0); 13419#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13466#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13465#L12 assume !(10 == main_~i~0); 13464#L12-2 assume !(0 == main_~i~0); 13463#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13462#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13461#L12 assume !(10 == main_~i~0); 13460#L12-2 assume !(0 == main_~i~0); 13459#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13458#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13457#L12 assume !(10 == main_~i~0); 13456#L12-2 assume !(0 == main_~i~0); 13455#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13454#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13453#L12 assume !(10 == main_~i~0); 13452#L12-2 assume !(0 == main_~i~0); 13451#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13450#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13449#L12 assume !(10 == main_~i~0); 13448#L12-2 assume !(0 == main_~i~0); 13447#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13446#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13445#L12 assume !(10 == main_~i~0); 13438#L12-2 assume !(0 == main_~i~0); 13440#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13439#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13435#L12 assume !(10 == main_~i~0); 13437#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 13504#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13502#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13428#L12 assume !(10 == main_~i~0); 13429#L12-2 assume !(0 == main_~i~0); 13433#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13503#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13501#L12 assume !(10 == main_~i~0); 13500#L12-2 assume !(0 == main_~i~0); 13499#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13498#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13497#L12 assume !(10 == main_~i~0); 13496#L12-2 assume !(0 == main_~i~0); 13495#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13494#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13493#L12 assume !(10 == main_~i~0); 13492#L12-2 assume !(0 == main_~i~0); 13491#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13490#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13489#L12 assume !(10 == main_~i~0); 13488#L12-2 assume !(0 == main_~i~0); 13487#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13486#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13485#L12 assume !(10 == main_~i~0); 13484#L12-2 assume !(0 == main_~i~0); 13483#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13482#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13481#L12 assume !(10 == main_~i~0); 13480#L12-2 assume !(0 == main_~i~0); 13479#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13478#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13477#L12 assume !(10 == main_~i~0); 13476#L12-2 assume !(0 == main_~i~0); 13475#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13474#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13473#L12 assume !(10 == main_~i~0); 13472#L12-2 assume !(0 == main_~i~0); 13471#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13469#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13470#L12 assume 10 == main_~i~0;main_~up~0 := 0; 13418#L12-2 [2019-11-25 08:51:11,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:11,016 INFO L82 PathProgramCache]: Analyzing trace with hash 180435263, now seen corresponding path program 14 times [2019-11-25 08:51:11,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:11,016 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287626284] [2019-11-25 08:51:11,016 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:11,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:11,026 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:11,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:11,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1847643336, now seen corresponding path program 14 times [2019-11-25 08:51:11,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:11,026 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533298623] [2019-11-25 08:51:11,026 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:11,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:11,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:11,039 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:11,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:11,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1125533446, now seen corresponding path program 7 times [2019-11-25 08:51:11,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:11,040 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630279723] [2019-11-25 08:51:11,040 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:11,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:11,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 996 proven. 91 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2019-11-25 08:51:11,118 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630279723] [2019-11-25 08:51:11,118 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336636435] [2019-11-25 08:51:11,118 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:51:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:11,154 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-25 08:51:11,155 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:11,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 996 proven. 91 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2019-11-25 08:51:11,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:51:11,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2019-11-25 08:51:11,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943202073] [2019-11-25 08:51:11,496 WARN L192 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 64 [2019-11-25 08:51:11,503 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:11,503 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:11,503 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:11,503 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:11,503 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:51:11,503 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:11,503 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:11,503 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:11,504 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration22_Loop [2019-11-25 08:51:11,504 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:11,504 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:11,504 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:11,506 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:11,510 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:11,512 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:11,556 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:11,556 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 100 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 100 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:11,560 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:11,560 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:51:11,563 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:51:11,563 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_21=0} Honda state: {v_rep~unnamed0~0~false_21=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 101 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 101 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:11,567 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:11,567 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 102 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 102 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:11,573 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:51:11,573 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:51:11,577 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:51:11,578 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:11,578 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:11,578 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:11,578 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:11,578 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:51:11,578 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:11,578 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:11,578 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:11,579 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration22_Loop [2019-11-25 08:51:11,579 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:11,579 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:11,579 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:11,581 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:11,585 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:11,588 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:11,634 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:11,634 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 103 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 103 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:11,638 INFO L120 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 [2019-11-25 08:51:11,639 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:11,639 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:11,639 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:11,639 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:11,640 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:51:11,640 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:51:11,643 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 104 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 104 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:11,647 INFO L120 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 [2019-11-25 08:51:11,648 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:11,648 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:11,648 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:11,648 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:11,651 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:51:11,651 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:51:11,653 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 105 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 105 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:11,657 INFO L120 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 [2019-11-25 08:51:11,659 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:11,659 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:51:11,659 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:11,659 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:11,659 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:11,660 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:51:11,660 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:51:11,662 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:51:11,664 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:51:11,664 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 106 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 106 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:11,669 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:51:11,669 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:51:11,669 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:51:11,669 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 17 Supporting invariants [] [2019-11-25 08:51:11,670 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:51:11,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:11,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:11,692 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:51:11,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:11,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:11,709 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-25 08:51:11,710 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:11,783 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 373 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2019-11-25 08:51:11,783 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 9 loop predicates [2019-11-25 08:51:11,784 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 139 states and 157 transitions. cyclomatic complexity: 21 Second operand 11 states. [2019-11-25 08:51:12,252 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 139 states and 157 transitions. cyclomatic complexity: 21. Second operand 11 states. Result 847 states and 974 transitions. Complement of second has 35 states. [2019-11-25 08:51:12,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 18 states 1 stem states 16 non-accepting loop states 1 accepting loop states [2019-11-25 08:51:12,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-25 08:51:12,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 80 transitions. [2019-11-25 08:51:12,253 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 80 transitions. Stem has 43 letters. Loop has 68 letters. [2019-11-25 08:51:12,254 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:12,254 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 80 transitions. Stem has 111 letters. Loop has 68 letters. [2019-11-25 08:51:12,254 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:12,254 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 80 transitions. Stem has 43 letters. Loop has 136 letters. [2019-11-25 08:51:12,255 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:12,255 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 847 states and 974 transitions. [2019-11-25 08:51:12,259 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 73 [2019-11-25 08:51:12,262 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 847 states to 590 states and 674 transitions. [2019-11-25 08:51:12,263 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 65 [2019-11-25 08:51:12,263 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 92 [2019-11-25 08:51:12,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 590 states and 674 transitions. [2019-11-25 08:51:12,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:12,264 INFO L688 BuchiCegarLoop]: Abstraction has 590 states and 674 transitions. [2019-11-25 08:51:12,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states and 674 transitions. [2019-11-25 08:51:12,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 346. [2019-11-25 08:51:12,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2019-11-25 08:51:12,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 377 transitions. [2019-11-25 08:51:12,270 INFO L711 BuchiCegarLoop]: Abstraction has 346 states and 377 transitions. [2019-11-25 08:51:12,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:51:12,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-25 08:51:12,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:51:12,271 INFO L87 Difference]: Start difference. First operand 346 states and 377 transitions. Second operand 10 states. [2019-11-25 08:51:12,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:51:12,340 INFO L93 Difference]: Finished difference Result 311 states and 348 transitions. [2019-11-25 08:51:12,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-25 08:51:12,341 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 311 states and 348 transitions. [2019-11-25 08:51:12,342 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 75 [2019-11-25 08:51:12,343 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 311 states to 252 states and 289 transitions. [2019-11-25 08:51:12,344 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 54 [2019-11-25 08:51:12,344 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54 [2019-11-25 08:51:12,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 252 states and 289 transitions. [2019-11-25 08:51:12,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:12,344 INFO L688 BuchiCegarLoop]: Abstraction has 252 states and 289 transitions. [2019-11-25 08:51:12,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states and 289 transitions. [2019-11-25 08:51:12,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 147. [2019-11-25 08:51:12,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2019-11-25 08:51:12,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 167 transitions. [2019-11-25 08:51:12,348 INFO L711 BuchiCegarLoop]: Abstraction has 147 states and 167 transitions. [2019-11-25 08:51:12,348 INFO L591 BuchiCegarLoop]: Abstraction has 147 states and 167 transitions. [2019-11-25 08:51:12,348 INFO L424 BuchiCegarLoop]: ======== Iteration 23============ [2019-11-25 08:51:12,349 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 147 states and 167 transitions. [2019-11-25 08:51:12,349 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 73 [2019-11-25 08:51:12,349 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:51:12,350 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:51:12,350 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 9, 1, 1, 1] [2019-11-25 08:51:12,350 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [18, 17, 17, 10, 8, 1, 1] [2019-11-25 08:51:12,351 INFO L794 eck$LassoCheckResult]: Stem: 15817#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 15818#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15829#L12 assume !(10 == main_~i~0); 15827#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 15826#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15819#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15820#L12 assume !(10 == main_~i~0); 15937#L12-2 assume !(0 == main_~i~0); 15936#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15935#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15934#L12 assume !(10 == main_~i~0); 15933#L12-2 assume !(0 == main_~i~0); 15932#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15931#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15930#L12 assume !(10 == main_~i~0); 15929#L12-2 assume !(0 == main_~i~0); 15928#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15927#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15926#L12 assume !(10 == main_~i~0); 15925#L12-2 assume !(0 == main_~i~0); 15924#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15923#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15922#L12 assume !(10 == main_~i~0); 15921#L12-2 assume !(0 == main_~i~0); 15920#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15919#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15918#L12 assume !(10 == main_~i~0); 15917#L12-2 assume !(0 == main_~i~0); 15916#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15915#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15914#L12 assume !(10 == main_~i~0); 15913#L12-2 assume !(0 == main_~i~0); 15912#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15911#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15910#L12 assume !(10 == main_~i~0); 15909#L12-2 assume !(0 == main_~i~0); 15908#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15907#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15869#L12 assume !(10 == main_~i~0); 15905#L12-2 assume !(0 == main_~i~0); 15904#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15868#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15836#L12 assume 10 == main_~i~0;main_~up~0 := 0; 15813#L12-2 [2019-11-25 08:51:12,351 INFO L796 eck$LassoCheckResult]: Loop: 15813#L12-2 assume !(0 == main_~i~0); 15814#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 15865#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15864#L12 assume !(10 == main_~i~0); 15863#L12-2 assume !(0 == main_~i~0); 15862#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 15861#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15860#L12 assume !(10 == main_~i~0); 15859#L12-2 assume !(0 == main_~i~0); 15858#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 15857#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15856#L12 assume !(10 == main_~i~0); 15855#L12-2 assume !(0 == main_~i~0); 15854#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 15853#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15852#L12 assume !(10 == main_~i~0); 15851#L12-2 assume !(0 == main_~i~0); 15850#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 15849#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15848#L12 assume !(10 == main_~i~0); 15847#L12-2 assume !(0 == main_~i~0); 15846#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 15845#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15844#L12 assume !(10 == main_~i~0); 15843#L12-2 assume !(0 == main_~i~0); 15842#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 15841#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15840#L12 assume !(10 == main_~i~0); 15833#L12-2 assume !(0 == main_~i~0); 15835#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 15834#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15830#L12 assume !(10 == main_~i~0); 15832#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 15903#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15901#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15823#L12 assume !(10 == main_~i~0); 15824#L12-2 assume !(0 == main_~i~0); 15828#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15902#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15900#L12 assume !(10 == main_~i~0); 15899#L12-2 assume !(0 == main_~i~0); 15898#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15897#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15896#L12 assume !(10 == main_~i~0); 15895#L12-2 assume !(0 == main_~i~0); 15894#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15893#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15892#L12 assume !(10 == main_~i~0); 15891#L12-2 assume !(0 == main_~i~0); 15890#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15889#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15888#L12 assume !(10 == main_~i~0); 15887#L12-2 assume !(0 == main_~i~0); 15886#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15885#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15884#L12 assume !(10 == main_~i~0); 15883#L12-2 assume !(0 == main_~i~0); 15882#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15881#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15880#L12 assume !(10 == main_~i~0); 15879#L12-2 assume !(0 == main_~i~0); 15878#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15877#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15876#L12 assume !(10 == main_~i~0); 15875#L12-2 assume !(0 == main_~i~0); 15874#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15873#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15872#L12 assume !(10 == main_~i~0); 15871#L12-2 assume !(0 == main_~i~0); 15870#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15866#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15867#L12 assume 10 == main_~i~0;main_~up~0 := 0; 15813#L12-2 [2019-11-25 08:51:12,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:12,351 INFO L82 PathProgramCache]: Analyzing trace with hash 180435263, now seen corresponding path program 15 times [2019-11-25 08:51:12,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:12,352 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393316696] [2019-11-25 08:51:12,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:12,365 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:12,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:12,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1176703283, now seen corresponding path program 15 times [2019-11-25 08:51:12,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:12,366 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582393781] [2019-11-25 08:51:12,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:12,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:12,381 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:12,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:12,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1395997809, now seen corresponding path program 8 times [2019-11-25 08:51:12,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:12,382 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373672764] [2019-11-25 08:51:12,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:12,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:12,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 1077 proven. 120 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2019-11-25 08:51:12,508 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373672764] [2019-11-25 08:51:12,508 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319398199] [2019-11-25 08:51:12,508 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:51:12,557 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:51:12,557 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:51:12,558 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-25 08:51:12,559 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:12,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 1077 proven. 120 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2019-11-25 08:51:12,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:51:12,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2019-11-25 08:51:12,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119421441] [2019-11-25 08:51:13,017 WARN L192 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 69 [2019-11-25 08:51:13,026 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:13,026 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:13,026 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:13,026 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:13,026 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:51:13,026 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:13,026 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:13,026 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:13,027 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration23_Loop [2019-11-25 08:51:13,027 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:13,027 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:13,027 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:13,029 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:13,033 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:13,035 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:13,084 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:13,084 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 108 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 108 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:13,087 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:13,087 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:51:13,090 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:51:13,090 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_23=1} Honda state: {v_rep~unnamed0~0~true_23=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 109 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 109 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:13,094 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:13,094 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:51:13,097 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:51:13,097 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=0} Honda state: {ULTIMATE.start_main_~up~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 110 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 110 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:13,102 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:13,102 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:51:13,106 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:51:13,106 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_23=0} Honda state: {v_rep~unnamed0~0~false_23=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 111 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 111 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:13,118 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:13,118 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 112 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 112 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:13,124 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:51:13,124 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:51:13,132 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:51:13,133 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:13,133 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:13,133 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:13,133 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:13,134 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:51:13,134 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:13,134 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:13,134 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:13,134 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration23_Loop [2019-11-25 08:51:13,134 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:13,134 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:13,134 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:13,136 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:13,138 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:13,142 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:13,199 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:13,199 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 113 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 113 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:13,202 INFO L120 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 [2019-11-25 08:51:13,204 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:13,204 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:13,204 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:13,204 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:13,206 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:51:13,206 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:51:13,213 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 114 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 114 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:13,217 INFO L120 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 [2019-11-25 08:51:13,219 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:13,219 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:13,219 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:13,219 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:13,220 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:51:13,220 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:51:13,224 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 115 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 115 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:13,231 INFO L120 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 [2019-11-25 08:51:13,232 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:13,232 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:51:13,233 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:13,233 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-25 08:51:13,233 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:13,234 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-25 08:51:13,234 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:51:13,236 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 116 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 116 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:13,240 INFO L120 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 [2019-11-25 08:51:13,241 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:13,241 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:51:13,242 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:13,242 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:13,242 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:13,242 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:51:13,243 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:51:13,245 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:51:13,247 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:51:13,247 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 117 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 117 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:13,250 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:51:13,250 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:51:13,250 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:51:13,250 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 9 Supporting invariants [] [2019-11-25 08:51:13,253 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:51:13,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:13,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:13,278 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:51:13,278 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:13,293 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-25 08:51:13,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:13,369 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2019-11-25 08:51:13,369 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 10 loop predicates [2019-11-25 08:51:13,369 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 147 states and 167 transitions. cyclomatic complexity: 23 Second operand 12 states. [2019-11-25 08:51:13,840 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 147 states and 167 transitions. cyclomatic complexity: 23. Second operand 12 states. Result 992 states and 1151 transitions. Complement of second has 39 states. [2019-11-25 08:51:13,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 20 states 1 stem states 18 non-accepting loop states 1 accepting loop states [2019-11-25 08:51:13,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-25 08:51:13,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 89 transitions. [2019-11-25 08:51:13,841 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 89 transitions. Stem has 43 letters. Loop has 72 letters. [2019-11-25 08:51:13,842 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:13,842 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 89 transitions. Stem has 115 letters. Loop has 72 letters. [2019-11-25 08:51:13,843 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:13,843 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 89 transitions. Stem has 43 letters. Loop has 144 letters. [2019-11-25 08:51:13,844 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:13,844 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 992 states and 1151 transitions. [2019-11-25 08:51:13,849 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 77 [2019-11-25 08:51:13,853 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 992 states to 667 states and 769 transitions. [2019-11-25 08:51:13,853 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 61 [2019-11-25 08:51:13,853 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 92 [2019-11-25 08:51:13,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 667 states and 769 transitions. [2019-11-25 08:51:13,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:13,854 INFO L688 BuchiCegarLoop]: Abstraction has 667 states and 769 transitions. [2019-11-25 08:51:13,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states and 769 transitions. [2019-11-25 08:51:13,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 354. [2019-11-25 08:51:13,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2019-11-25 08:51:13,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 387 transitions. [2019-11-25 08:51:13,861 INFO L711 BuchiCegarLoop]: Abstraction has 354 states and 387 transitions. [2019-11-25 08:51:13,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:51:13,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-25 08:51:13,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-11-25 08:51:13,862 INFO L87 Difference]: Start difference. First operand 354 states and 387 transitions. Second operand 11 states. [2019-11-25 08:51:13,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:51:13,942 INFO L93 Difference]: Finished difference Result 335 states and 376 transitions. [2019-11-25 08:51:13,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-25 08:51:13,942 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 335 states and 376 transitions. [2019-11-25 08:51:13,944 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 79 [2019-11-25 08:51:13,946 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 335 states to 268 states and 309 transitions. [2019-11-25 08:51:13,946 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 54 [2019-11-25 08:51:13,946 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54 [2019-11-25 08:51:13,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 268 states and 309 transitions. [2019-11-25 08:51:13,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:13,946 INFO L688 BuchiCegarLoop]: Abstraction has 268 states and 309 transitions. [2019-11-25 08:51:13,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states and 309 transitions. [2019-11-25 08:51:13,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 155. [2019-11-25 08:51:13,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2019-11-25 08:51:13,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 177 transitions. [2019-11-25 08:51:13,949 INFO L711 BuchiCegarLoop]: Abstraction has 155 states and 177 transitions. [2019-11-25 08:51:13,949 INFO L591 BuchiCegarLoop]: Abstraction has 155 states and 177 transitions. [2019-11-25 08:51:13,949 INFO L424 BuchiCegarLoop]: ======== Iteration 24============ [2019-11-25 08:51:13,949 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 155 states and 177 transitions. [2019-11-25 08:51:13,950 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 77 [2019-11-25 08:51:13,950 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:51:13,951 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:51:13,951 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 9, 1, 1, 1] [2019-11-25 08:51:13,951 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [19, 18, 18, 10, 9, 1, 1] [2019-11-25 08:51:13,952 INFO L794 eck$LassoCheckResult]: Stem: 18430#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 18431#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18442#L12 assume !(10 == main_~i~0); 18440#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 18439#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18432#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18433#L12 assume !(10 == main_~i~0); 18554#L12-2 assume !(0 == main_~i~0); 18553#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18552#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18551#L12 assume !(10 == main_~i~0); 18550#L12-2 assume !(0 == main_~i~0); 18549#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18548#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18547#L12 assume !(10 == main_~i~0); 18546#L12-2 assume !(0 == main_~i~0); 18545#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18544#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18543#L12 assume !(10 == main_~i~0); 18542#L12-2 assume !(0 == main_~i~0); 18541#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18540#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18539#L12 assume !(10 == main_~i~0); 18538#L12-2 assume !(0 == main_~i~0); 18537#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18536#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18535#L12 assume !(10 == main_~i~0); 18534#L12-2 assume !(0 == main_~i~0); 18533#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18532#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18531#L12 assume !(10 == main_~i~0); 18530#L12-2 assume !(0 == main_~i~0); 18529#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18528#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18527#L12 assume !(10 == main_~i~0); 18526#L12-2 assume !(0 == main_~i~0); 18525#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18524#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18484#L12 assume !(10 == main_~i~0); 18522#L12-2 assume !(0 == main_~i~0); 18521#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18483#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18449#L12 assume 10 == main_~i~0;main_~up~0 := 0; 18426#L12-2 [2019-11-25 08:51:13,952 INFO L796 eck$LassoCheckResult]: Loop: 18426#L12-2 assume !(0 == main_~i~0); 18427#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 18482#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18481#L12 assume !(10 == main_~i~0); 18480#L12-2 assume !(0 == main_~i~0); 18479#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 18478#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18477#L12 assume !(10 == main_~i~0); 18476#L12-2 assume !(0 == main_~i~0); 18475#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 18474#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18473#L12 assume !(10 == main_~i~0); 18472#L12-2 assume !(0 == main_~i~0); 18471#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 18470#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18469#L12 assume !(10 == main_~i~0); 18468#L12-2 assume !(0 == main_~i~0); 18467#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 18466#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18465#L12 assume !(10 == main_~i~0); 18464#L12-2 assume !(0 == main_~i~0); 18463#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 18462#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18461#L12 assume !(10 == main_~i~0); 18460#L12-2 assume !(0 == main_~i~0); 18459#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 18458#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18457#L12 assume !(10 == main_~i~0); 18456#L12-2 assume !(0 == main_~i~0); 18455#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 18454#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18453#L12 assume !(10 == main_~i~0); 18446#L12-2 assume !(0 == main_~i~0); 18448#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 18447#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18443#L12 assume !(10 == main_~i~0); 18445#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 18520#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18518#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18436#L12 assume !(10 == main_~i~0); 18437#L12-2 assume !(0 == main_~i~0); 18441#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18519#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18517#L12 assume !(10 == main_~i~0); 18516#L12-2 assume !(0 == main_~i~0); 18515#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18514#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18513#L12 assume !(10 == main_~i~0); 18512#L12-2 assume !(0 == main_~i~0); 18511#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18510#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18509#L12 assume !(10 == main_~i~0); 18508#L12-2 assume !(0 == main_~i~0); 18507#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18506#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18505#L12 assume !(10 == main_~i~0); 18504#L12-2 assume !(0 == main_~i~0); 18503#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18502#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18501#L12 assume !(10 == main_~i~0); 18500#L12-2 assume !(0 == main_~i~0); 18499#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18498#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18497#L12 assume !(10 == main_~i~0); 18496#L12-2 assume !(0 == main_~i~0); 18495#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18494#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18493#L12 assume !(10 == main_~i~0); 18492#L12-2 assume !(0 == main_~i~0); 18491#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18490#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18489#L12 assume !(10 == main_~i~0); 18488#L12-2 assume !(0 == main_~i~0); 18487#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18485#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18486#L12 assume 10 == main_~i~0;main_~up~0 := 0; 18426#L12-2 [2019-11-25 08:51:13,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:13,952 INFO L82 PathProgramCache]: Analyzing trace with hash 180435263, now seen corresponding path program 16 times [2019-11-25 08:51:13,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:13,953 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728050922] [2019-11-25 08:51:13,953 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:13,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:13,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:13,963 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:13,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:13,979 INFO L82 PathProgramCache]: Analyzing trace with hash 289875998, now seen corresponding path program 16 times [2019-11-25 08:51:13,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:13,979 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223979423] [2019-11-25 08:51:13,979 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:13,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:13,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:13,997 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:13,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:13,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1498053540, now seen corresponding path program 9 times [2019-11-25 08:51:13,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:13,998 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668773515] [2019-11-25 08:51:13,998 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:14,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 1158 proven. 153 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2019-11-25 08:51:14,119 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668773515] [2019-11-25 08:51:14,119 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527764726] [2019-11-25 08:51:14,119 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:51:14,178 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s) [2019-11-25 08:51:14,179 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:51:14,179 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-25 08:51:14,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:14,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 1158 proven. 153 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2019-11-25 08:51:14,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:51:14,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2019-11-25 08:51:14,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722000154] [2019-11-25 08:51:14,714 WARN L192 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 70 [2019-11-25 08:51:14,724 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:14,725 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:14,725 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:14,725 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:14,725 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:51:14,725 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:14,725 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:14,725 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:14,725 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration24_Loop [2019-11-25 08:51:14,725 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:14,725 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:14,726 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:14,732 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:14,739 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:14,742 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:14,789 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:14,789 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 119 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 119 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:14,793 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:14,793 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:51:14,796 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:51:14,796 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=0} Honda state: {ULTIMATE.start_main_~up~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 120 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 120 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:14,801 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:14,801 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:51:14,804 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:51:14,804 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_25=1} Honda state: {v_rep~unnamed0~0~true_25=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 121 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 121 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:14,808 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:14,808 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:51:14,811 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:51:14,811 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_25=0} Honda state: {v_rep~unnamed0~0~false_25=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 122 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 122 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:14,816 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:14,816 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 123 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 123 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:14,823 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:51:14,823 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:51:14,827 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:51:14,828 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:14,828 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:14,828 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:14,828 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:14,828 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:51:14,828 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:14,828 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:14,828 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:14,828 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration24_Loop [2019-11-25 08:51:14,828 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:14,829 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:14,829 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:14,831 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:14,836 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:14,838 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:14,897 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:14,897 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 124 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 124 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:14,900 INFO L120 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 [2019-11-25 08:51:14,901 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:14,901 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:14,901 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:14,901 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:14,902 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:51:14,902 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:51:14,905 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 125 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 125 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:14,909 INFO L120 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 [2019-11-25 08:51:14,910 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:14,910 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:51:14,910 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:14,910 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-25 08:51:14,910 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:14,911 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-25 08:51:14,911 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:51:14,913 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 126 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 126 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:14,917 INFO L120 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 [2019-11-25 08:51:14,918 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:14,918 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:14,919 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:14,919 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:14,920 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:51:14,920 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:51:14,923 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 127 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 127 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:14,927 INFO L120 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 [2019-11-25 08:51:14,928 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:14,928 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:51:14,929 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:14,929 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:14,929 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:14,930 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:51:14,930 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:51:14,931 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:51:14,933 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:51:14,933 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/z3 Starting monitored process 128 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 128 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:14,938 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:51:14,938 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:51:14,938 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:51:14,938 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 19 Supporting invariants [] [2019-11-25 08:51:14,939 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:51:14,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:14,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:14,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:51:14,965 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:14,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:14,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-25 08:51:14,984 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:15,091 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 513 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2019-11-25 08:51:15,091 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 11 loop predicates [2019-11-25 08:51:15,091 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 155 states and 177 transitions. cyclomatic complexity: 25 Second operand 13 states. [2019-11-25 08:51:15,643 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 155 states and 177 transitions. cyclomatic complexity: 25. Second operand 13 states. Result 1168 states and 1366 transitions. Complement of second has 43 states. [2019-11-25 08:51:15,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 22 states 1 stem states 20 non-accepting loop states 1 accepting loop states [2019-11-25 08:51:15,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-25 08:51:15,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 98 transitions. [2019-11-25 08:51:15,644 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 22 states and 98 transitions. Stem has 43 letters. Loop has 76 letters. [2019-11-25 08:51:15,644 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:15,644 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 22 states and 98 transitions. Stem has 119 letters. Loop has 76 letters. [2019-11-25 08:51:15,645 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:15,645 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 22 states and 98 transitions. Stem has 43 letters. Loop has 152 letters. [2019-11-25 08:51:15,645 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:15,646 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1168 states and 1366 transitions. [2019-11-25 08:51:15,651 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 81 [2019-11-25 08:51:15,656 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1168 states to 767 states and 892 transitions. [2019-11-25 08:51:15,656 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 61 [2019-11-25 08:51:15,656 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 97 [2019-11-25 08:51:15,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 767 states and 892 transitions. [2019-11-25 08:51:15,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:15,657 INFO L688 BuchiCegarLoop]: Abstraction has 767 states and 892 transitions. [2019-11-25 08:51:15,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states and 892 transitions. [2019-11-25 08:51:15,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 376. [2019-11-25 08:51:15,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2019-11-25 08:51:15,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 413 transitions. [2019-11-25 08:51:15,665 INFO L711 BuchiCegarLoop]: Abstraction has 376 states and 413 transitions. [2019-11-25 08:51:15,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:51:15,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-25 08:51:15,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-11-25 08:51:15,666 INFO L87 Difference]: Start difference. First operand 376 states and 413 transitions. Second operand 12 states. [2019-11-25 08:51:15,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:51:15,748 INFO L93 Difference]: Finished difference Result 359 states and 404 transitions. [2019-11-25 08:51:15,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-25 08:51:15,748 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 359 states and 404 transitions. [2019-11-25 08:51:15,750 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 83 [2019-11-25 08:51:15,752 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 359 states to 284 states and 329 transitions. [2019-11-25 08:51:15,752 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 54 [2019-11-25 08:51:15,752 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54 [2019-11-25 08:51:15,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 284 states and 329 transitions. [2019-11-25 08:51:15,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:15,752 INFO L688 BuchiCegarLoop]: Abstraction has 284 states and 329 transitions. [2019-11-25 08:51:15,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states and 329 transitions. [2019-11-25 08:51:15,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 163. [2019-11-25 08:51:15,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2019-11-25 08:51:15,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 187 transitions. [2019-11-25 08:51:15,756 INFO L711 BuchiCegarLoop]: Abstraction has 163 states and 187 transitions. [2019-11-25 08:51:15,756 INFO L591 BuchiCegarLoop]: Abstraction has 163 states and 187 transitions. [2019-11-25 08:51:15,756 INFO L424 BuchiCegarLoop]: ======== Iteration 25============ [2019-11-25 08:51:15,757 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 163 states and 187 transitions. [2019-11-25 08:51:15,758 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2019-11-25 08:51:15,758 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:51:15,758 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:51:15,759 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 9, 1, 1, 1] [2019-11-25 08:51:15,759 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [20, 19, 19, 10, 10, 1, 1] [2019-11-25 08:51:15,759 INFO L794 eck$LassoCheckResult]: Stem: 21306#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 21307#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21318#L12 assume !(10 == main_~i~0); 21316#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 21315#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21308#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21309#L12 assume !(10 == main_~i~0); 21434#L12-2 assume !(0 == main_~i~0); 21433#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21432#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21431#L12 assume !(10 == main_~i~0); 21430#L12-2 assume !(0 == main_~i~0); 21429#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21428#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21427#L12 assume !(10 == main_~i~0); 21426#L12-2 assume !(0 == main_~i~0); 21425#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21424#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21423#L12 assume !(10 == main_~i~0); 21422#L12-2 assume !(0 == main_~i~0); 21421#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21420#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21419#L12 assume !(10 == main_~i~0); 21418#L12-2 assume !(0 == main_~i~0); 21417#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21416#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21415#L12 assume !(10 == main_~i~0); 21414#L12-2 assume !(0 == main_~i~0); 21413#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21412#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21411#L12 assume !(10 == main_~i~0); 21410#L12-2 assume !(0 == main_~i~0); 21409#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21408#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21407#L12 assume !(10 == main_~i~0); 21406#L12-2 assume !(0 == main_~i~0); 21405#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21404#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21366#L12 assume !(10 == main_~i~0); 21402#L12-2 assume !(0 == main_~i~0); 21401#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21365#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21325#L12 assume 10 == main_~i~0;main_~up~0 := 0; 21302#L12-2 [2019-11-25 08:51:15,759 INFO L796 eck$LassoCheckResult]: Loop: 21302#L12-2 assume !(0 == main_~i~0); 21303#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 21362#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21361#L12 assume !(10 == main_~i~0); 21360#L12-2 assume !(0 == main_~i~0); 21359#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 21358#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21357#L12 assume !(10 == main_~i~0); 21356#L12-2 assume !(0 == main_~i~0); 21355#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 21354#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21353#L12 assume !(10 == main_~i~0); 21352#L12-2 assume !(0 == main_~i~0); 21351#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 21350#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21349#L12 assume !(10 == main_~i~0); 21348#L12-2 assume !(0 == main_~i~0); 21347#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 21346#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21345#L12 assume !(10 == main_~i~0); 21344#L12-2 assume !(0 == main_~i~0); 21343#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 21342#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21341#L12 assume !(10 == main_~i~0); 21340#L12-2 assume !(0 == main_~i~0); 21339#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 21338#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21337#L12 assume !(10 == main_~i~0); 21336#L12-2 assume !(0 == main_~i~0); 21335#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 21334#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21333#L12 assume !(10 == main_~i~0); 21332#L12-2 assume !(0 == main_~i~0); 21331#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 21330#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21329#L12 assume !(10 == main_~i~0); 21322#L12-2 assume !(0 == main_~i~0); 21324#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 21323#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21319#L12 assume !(10 == main_~i~0); 21321#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 21400#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21398#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21312#L12 assume !(10 == main_~i~0); 21313#L12-2 assume !(0 == main_~i~0); 21317#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21399#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21397#L12 assume !(10 == main_~i~0); 21396#L12-2 assume !(0 == main_~i~0); 21395#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21394#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21393#L12 assume !(10 == main_~i~0); 21392#L12-2 assume !(0 == main_~i~0); 21391#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21390#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21389#L12 assume !(10 == main_~i~0); 21388#L12-2 assume !(0 == main_~i~0); 21387#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21386#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21385#L12 assume !(10 == main_~i~0); 21384#L12-2 assume !(0 == main_~i~0); 21383#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21382#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21381#L12 assume !(10 == main_~i~0); 21380#L12-2 assume !(0 == main_~i~0); 21379#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21378#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21377#L12 assume !(10 == main_~i~0); 21376#L12-2 assume !(0 == main_~i~0); 21375#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21374#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21373#L12 assume !(10 == main_~i~0); 21372#L12-2 assume !(0 == main_~i~0); 21371#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21370#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21369#L12 assume !(10 == main_~i~0); 21368#L12-2 assume !(0 == main_~i~0); 21367#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21363#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21364#L12 assume 10 == main_~i~0;main_~up~0 := 0; 21302#L12-2 [2019-11-25 08:51:15,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:15,760 INFO L82 PathProgramCache]: Analyzing trace with hash 180435263, now seen corresponding path program 17 times [2019-11-25 08:51:15,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:15,760 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177108509] [2019-11-25 08:51:15,760 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:15,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:15,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:15,770 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:15,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:15,771 INFO L82 PathProgramCache]: Analyzing trace with hash -312487543, now seen corresponding path program 17 times [2019-11-25 08:51:15,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:15,771 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18905580] [2019-11-25 08:51:15,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:15,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:15,785 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:15,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:15,785 INFO L82 PathProgramCache]: Analyzing trace with hash 799661767, now seen corresponding path program 10 times [2019-11-25 08:51:15,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:15,786 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077055922] [2019-11-25 08:51:15,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:15,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:15,812 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:16,335 WARN L192 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 78 [2019-11-25 08:51:16,506 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 47 [2019-11-25 08:51:16,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 25.11 08:51:16 BoogieIcfgContainer [2019-11-25 08:51:16,536 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-25 08:51:16,536 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:51:16,536 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:51:16,536 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:51:16,537 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:50:59" (3/4) ... [2019-11-25 08:51:16,540 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-11-25 08:51:16,598 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ebc7192d-f4ad-44cd-98ee-5b210066dae5/bin/uautomizer/witness.graphml [2019-11-25 08:51:16,599 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:51:16,600 INFO L168 Benchmark]: Toolchain (without parser) took 17510.45 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 321.9 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -242.2 MB). Peak memory consumption was 79.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:51:16,600 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:51:16,600 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -180.3 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:51:16,601 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:51:16,601 INFO L168 Benchmark]: Boogie Preprocessor took 19.73 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:51:16,601 INFO L168 Benchmark]: RCFGBuilder took 185.40 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:51:16,602 INFO L168 Benchmark]: BuchiAutomizer took 16900.79 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 194.5 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -84.9 MB). Peak memory consumption was 464.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:51:16,602 INFO L168 Benchmark]: Witness Printer took 62.60 ms. Allocated memory is still 1.4 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:51:16,604 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 303.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -180.3 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.73 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 185.40 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 16900.79 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 194.5 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -84.9 MB). Peak memory consumption was 464.5 MB. Max. memory is 11.5 GB. * Witness Printer took 62.60 ms. Allocated memory is still 1.4 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 35 terminating modules (22 trivial, 12 deterministic, 1 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function i and consists of 3 locations. One deterministic module has affine ranking function -2 * i + 1 and consists of 4 locations. One deterministic module has affine ranking function -2 * i + 19 and consists of 4 locations. One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function -1 * i + 6 and consists of 8 locations. One deterministic module has affine ranking function -2 * i + 13 and consists of 10 locations. One deterministic module has affine ranking function -1 * i + 7 and consists of 12 locations. One deterministic module has affine ranking function -2 * i + 15 and consists of 14 locations. One deterministic module has affine ranking function -1 * i + 8 and consists of 16 locations. One deterministic module has affine ranking function -2 * i + 17 and consists of 18 locations. One deterministic module has affine ranking function -1 * i + 9 and consists of 20 locations. One deterministic module has affine ranking function -2 * i + 19 and consists of 22 locations. One nondeterministic module has affine ranking function i and consists of 4 locations. 22 modules have a trivial ranking function, the largest among these consists of 12 locations. The remainder module has 163 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 16.8s and 25 iterations. TraceHistogramMax:20. Analysis of lassos took 11.0s. Construction of modules took 1.7s. Büchi inclusion checks took 3.5s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 34. Automata minimization 0.1s AutomataMinimizationTime, 35 MinimizatonAttempts, 2269 StatesRemovedByMinimization, 34 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had 163 states and ocurred in iteration 24. Nontrivial modules had stage [12, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1368/3680 HoareTripleCheckerStatistics: 262 SDtfs, 787 SDslu, 9 SDs, 0 SdLazy, 2168 SolverSat, 242 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT2 conc0 concLT9 SILN0 SILU0 SILI10 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax168 hnf100 lsp41 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq181 hnf93 smp84 dnf134 smp100 tf108 neg93 sie114 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 27ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 26 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 13 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 15]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {up=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@23ba898d=0, \result=0, i=10} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 11]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int up; [L8] i = __VERIFIER_nondet_int() [L9] up = 0 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND TRUE i == 0 [L16] up = 1 [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND TRUE i == 10 [L13] up = 0 Loop: [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND TRUE i == 0 [L16] up = 1 [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND TRUE i == 10 [L13] up = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...