./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/Sunset.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/Sunset.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/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 a80d10d797b477078e6dad6d87594a2a0aea1065 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.25-f470102 [2019-12-07 14:22:43,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 14:22:43,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 14:22:43,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 14:22:43,447 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 14:22:43,448 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 14:22:43,449 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 14:22:43,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 14:22:43,451 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 14:22:43,452 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 14:22:43,452 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 14:22:43,453 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 14:22:43,453 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 14:22:43,454 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 14:22:43,455 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 14:22:43,456 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 14:22:43,456 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 14:22:43,457 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 14:22:43,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 14:22:43,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 14:22:43,461 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 14:22:43,461 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 14:22:43,462 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 14:22:43,463 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 14:22:43,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 14:22:43,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 14:22:43,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 14:22:43,465 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 14:22:43,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 14:22:43,466 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 14:22:43,466 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 14:22:43,467 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 14:22:43,467 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 14:22:43,467 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 14:22:43,468 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 14:22:43,468 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 14:22:43,469 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 14:22:43,469 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 14:22:43,469 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 14:22:43,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 14:22:43,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 14:22:43,470 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-12-07 14:22:43,480 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 14:22:43,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 14:22:43,481 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 14:22:43,481 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 14:22:43,481 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 14:22:43,482 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 14:22:43,482 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 14:22:43,482 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 14:22:43,482 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 14:22:43,482 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 14:22:43,482 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 14:22:43,482 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 14:22:43,482 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 14:22:43,482 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 14:22:43,483 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 14:22:43,483 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 14:22:43,483 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 14:22:43,483 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 14:22:43,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 14:22:43,483 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 14:22:43,483 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 14:22:43,483 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 14:22:43,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 14:22:43,484 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 14:22:43,484 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 14:22:43,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 14:22:43,484 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 14:22:43,484 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 14:22:43,484 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 14:22:43,485 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 14:22:43,485 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_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/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 -> a80d10d797b477078e6dad6d87594a2a0aea1065 [2019-12-07 14:22:43,585 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 14:22:43,593 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 14:22:43,595 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 14:22:43,596 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 14:22:43,596 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 14:22:43,597 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/Sunset.c [2019-12-07 14:22:43,633 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/bin/uautomizer/data/542b72713/740b32cf52c8404f9b169d05b52fea4a/FLAG6f5914454 [2019-12-07 14:22:44,069 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 14:22:44,070 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/sv-benchmarks/c/termination-restricted-15/Sunset.c [2019-12-07 14:22:44,073 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/bin/uautomizer/data/542b72713/740b32cf52c8404f9b169d05b52fea4a/FLAG6f5914454 [2019-12-07 14:22:44,082 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/bin/uautomizer/data/542b72713/740b32cf52c8404f9b169d05b52fea4a [2019-12-07 14:22:44,084 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 14:22:44,085 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 14:22:44,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 14:22:44,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 14:22:44,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 14:22:44,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:22:44" (1/1) ... [2019-12-07 14:22:44,090 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b4098f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:22:44, skipping insertion in model container [2019-12-07 14:22:44,090 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:22:44" (1/1) ... [2019-12-07 14:22:44,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 14:22:44,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 14:22:44,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:22:44,198 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 14:22:44,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:22:44,248 INFO L208 MainTranslator]: Completed translation [2019-12-07 14:22:44,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:22:44 WrapperNode [2019-12-07 14:22:44,248 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 14:22:44,249 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 14:22:44,249 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 14:22:44,249 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 14:22:44,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:22:44" (1/1) ... [2019-12-07 14:22:44,258 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:22:44" (1/1) ... [2019-12-07 14:22:44,269 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 14:22:44,269 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 14:22:44,269 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 14:22:44,269 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 14:22:44,275 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:22:44" (1/1) ... [2019-12-07 14:22:44,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:22:44" (1/1) ... [2019-12-07 14:22:44,275 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:22:44" (1/1) ... [2019-12-07 14:22:44,275 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:22:44" (1/1) ... [2019-12-07 14:22:44,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:22:44" (1/1) ... [2019-12-07 14:22:44,280 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:22:44" (1/1) ... [2019-12-07 14:22:44,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:22:44" (1/1) ... [2019-12-07 14:22:44,281 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 14:22:44,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 14:22:44,282 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 14:22:44,282 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 14:22:44,282 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:22:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/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 [2019-12-07 14:22:44,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 14:22:44,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 14:22:44,420 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 14:22:44,421 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-12-07 14:22:44,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:22:44 BoogieIcfgContainer [2019-12-07 14:22:44,422 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 14:22:44,422 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 14:22:44,422 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 14:22:44,425 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 14:22:44,425 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 14:22:44,425 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 02:22:44" (1/3) ... [2019-12-07 14:22:44,426 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@55ddbbbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 02:22:44, skipping insertion in model container [2019-12-07 14:22:44,426 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 14:22:44,426 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:22:44" (2/3) ... [2019-12-07 14:22:44,427 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@55ddbbbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 02:22:44, skipping insertion in model container [2019-12-07 14:22:44,427 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 14:22:44,427 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:22:44" (3/3) ... [2019-12-07 14:22:44,428 INFO L371 chiAutomizerObserver]: Analyzing ICFG Sunset.c [2019-12-07 14:22:44,460 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 14:22:44,460 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 14:22:44,460 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 14:22:44,460 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 14:22:44,460 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 14:22:44,460 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 14:22:44,460 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 14:22:44,460 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 14:22:44,470 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-12-07 14:22:44,484 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 14:22:44,484 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 14:22:44,485 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 14:22:44,489 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 14:22:44,489 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 14:22:44,489 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 14:22:44,489 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-12-07 14:22:44,490 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 14:22:44,490 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 14:22:44,490 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 14:22:44,490 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 14:22:44,490 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 14:22:44,495 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 5#L13-1true [2019-12-07 14:22:44,496 INFO L796 eck$LassoCheckResult]: Loop: 5#L13-1true assume !!(main_~i~0 > 10); 3#L10true assume 25 == main_~i~0;main_~i~0 := 30; 8#L10-2true assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 5#L13-1true [2019-12-07 14:22:44,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:44,500 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-12-07 14:22:44,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:22:44,505 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509019282] [2019-12-07 14:22:44,506 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:22:44,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:44,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:44,568 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:22:44,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:44,569 INFO L82 PathProgramCache]: Analyzing trace with hash 39823, now seen corresponding path program 1 times [2019-12-07 14:22:44,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:22:44,570 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700883268] [2019-12-07 14:22:44,570 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:22:44,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:44,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:44,584 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:22:44,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:44,585 INFO L82 PathProgramCache]: Analyzing trace with hash 963344, now seen corresponding path program 1 times [2019-12-07 14:22:44,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:22:44,585 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513933113] [2019-12-07 14:22:44,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:22:44,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:44,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:44,596 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:22:44,641 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:22:44,642 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:22:44,642 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:22:44,642 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:22:44,642 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 14:22:44,642 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:44,642 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:22:44,642 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:22:44,642 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration1_Loop [2019-12-07 14:22:44,643 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:22:44,643 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:22:44,657 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:44,663 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:44,666 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:44,718 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:22:44,718 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:44,722 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:22:44,723 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:22:44,730 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:22:44,730 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_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/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) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:44,734 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:22:44,734 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:22:44,738 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:22:44,738 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_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/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) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:44,742 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:22:44,742 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/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) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:44,751 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 14:22:44,751 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:22:44,756 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 14:22:44,757 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:22:44,757 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:22:44,758 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:22:44,758 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:22:44,758 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 14:22:44,758 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:44,758 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:22:44,758 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:22:44,758 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration1_Loop [2019-12-07 14:22:44,758 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:22:44,758 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:22:44,759 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:44,762 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:44,767 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:44,802 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:22:44,805 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/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) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:44,809 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 [2019-12-07 14:22:44,811 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:22:44,811 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:22:44,811 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:22:44,811 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:22:44,815 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 14:22:44,815 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 14:22:44,820 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/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) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:44,823 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 [2019-12-07 14:22:44,825 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:22:44,825 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:22:44,825 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:22:44,825 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:22:44,826 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:22:44,827 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 14:22:44,827 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:22:44,829 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 14:22:44,832 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 14:22:44,832 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_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/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) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:44,842 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 14:22:44,843 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 14:22:44,843 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 14:22:44,843 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 27 Supporting invariants [] [2019-12-07 14:22:44,846 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 14:22:44,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:44,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:44,871 WARN L262 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:22:44,871 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:44,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:44,878 WARN L262 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 14:22:44,878 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:44,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:22:44,902 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 [2019-12-07 14:22:44,903 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 4 states. [2019-12-07 14:22:44,934 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 4 states. Result 27 states and 35 transitions. Complement of second has 6 states. [2019-12-07 14:22:44,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 14:22:44,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 14:22:44,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2019-12-07 14:22:44,937 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 1 letters. Loop has 3 letters. [2019-12-07 14:22:44,938 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:44,938 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 14:22:44,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:44,950 WARN L262 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:22:44,950 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:44,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:44,953 WARN L262 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 14:22:44,953 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:44,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:22:44,962 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 14:22:44,962 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 4 states. [2019-12-07 14:22:44,987 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 4 states. Result 28 states and 38 transitions. Complement of second has 8 states. [2019-12-07 14:22:44,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 14:22:44,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 14:22:44,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2019-12-07 14:22:44,988 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 1 letters. Loop has 3 letters. [2019-12-07 14:22:44,989 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:44,989 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 4 letters. Loop has 3 letters. [2019-12-07 14:22:44,989 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:44,989 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 1 letters. Loop has 6 letters. [2019-12-07 14:22:44,989 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:44,990 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 38 transitions. [2019-12-07 14:22:44,992 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 14:22:44,995 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 11 states and 17 transitions. [2019-12-07 14:22:44,996 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-12-07 14:22:44,996 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-12-07 14:22:44,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 17 transitions. [2019-12-07 14:22:44,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 14:22:44,997 INFO L688 BuchiCegarLoop]: Abstraction has 11 states and 17 transitions. [2019-12-07 14:22:45,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 17 transitions. [2019-12-07 14:22:45,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2019-12-07 14:22:45,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-12-07 14:22:45,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 15 transitions. [2019-12-07 14:22:45,015 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2019-12-07 14:22:45,015 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2019-12-07 14:22:45,015 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 14:22:45,015 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 15 transitions. [2019-12-07 14:22:45,015 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 14:22:45,015 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 14:22:45,015 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 14:22:45,016 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-12-07 14:22:45,016 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 14:22:45,016 INFO L794 eck$LassoCheckResult]: Stem: 126#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 127#L13-1 assume !!(main_~i~0 > 10); 130#L10 assume !(25 == main_~i~0); 123#L10-2 [2019-12-07 14:22:45,016 INFO L796 eck$LassoCheckResult]: Loop: 123#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 128#L13-1 assume !!(main_~i~0 > 10); 122#L10 assume 25 == main_~i~0;main_~i~0 := 30; 123#L10-2 [2019-12-07 14:22:45,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:45,016 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2019-12-07 14:22:45,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:22:45,017 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154029668] [2019-12-07 14:22:45,017 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:22:45,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:45,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:45,021 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:22:45,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:45,022 INFO L82 PathProgramCache]: Analyzing trace with hash 48373, now seen corresponding path program 2 times [2019-12-07 14:22:45,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:22:45,022 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700971214] [2019-12-07 14:22:45,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:22:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:45,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:45,029 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:22:45,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:45,029 INFO L82 PathProgramCache]: Analyzing trace with hash 925833489, now seen corresponding path program 1 times [2019-12-07 14:22:45,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:22:45,029 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290945063] [2019-12-07 14:22:45,029 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:22:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:45,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:45,037 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:22:45,052 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:22:45,052 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:22:45,052 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:22:45,052 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:22:45,052 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 14:22:45,052 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:45,052 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:22:45,052 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:22:45,052 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration2_Loop [2019-12-07 14:22:45,053 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:22:45,053 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:22:45,053 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:45,056 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:45,058 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:45,084 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:22:45,084 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/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 [2019-12-07 14:22:45,087 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:22:45,087 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:22:45,090 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:22:45,091 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_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/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 [2019-12-07 14:22:45,094 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:22:45,094 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:22:45,098 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:22:45,098 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_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/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 [2019-12-07 14:22:45,101 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:22:45,102 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/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) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:45,109 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 14:22:45,109 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:22:45,115 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 14:22:45,116 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:22:45,116 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:22:45,116 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:22:45,116 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:22:45,117 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 14:22:45,117 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:45,117 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:22:45,117 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:22:45,117 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration2_Loop [2019-12-07 14:22:45,117 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:22:45,117 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:22:45,118 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:45,120 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:45,122 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:45,153 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:22:45,154 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/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 [2019-12-07 14:22:45,156 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 [2019-12-07 14:22:45,158 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:22:45,158 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:22:45,158 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:22:45,158 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:22:45,161 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 14:22:45,161 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 14:22:45,165 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/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) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:45,169 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 [2019-12-07 14:22:45,170 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:22:45,170 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:22:45,170 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:22:45,171 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:22:45,173 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 14:22:45,173 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 14:22:45,176 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/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) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:45,180 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 [2019-12-07 14:22:45,181 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:22:45,181 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:22:45,181 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:22:45,181 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:22:45,181 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:22:45,182 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 14:22:45,182 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:22:45,184 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 14:22:45,186 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 14:22:45,186 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_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/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) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:45,194 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 14:22:45,195 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 14:22:45,195 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 14:22:45,195 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 28 Supporting invariants [] [2019-12-07 14:22:45,196 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 14:22:45,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:45,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:45,211 INFO L264 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:22:45,211 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:45,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:45,215 WARN L262 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 14:22:45,215 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:45,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:22:45,222 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 [2019-12-07 14:22:45,222 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 15 transitions. cyclomatic complexity: 7 Second operand 3 states. [2019-12-07 14:22:45,237 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 15 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 22 states and 34 transitions. Complement of second has 5 states. [2019-12-07 14:22:45,237 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 [2019-12-07 14:22:45,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 14:22:45,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2019-12-07 14:22:45,238 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 3 letters. Loop has 3 letters. [2019-12-07 14:22:45,238 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:45,238 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 6 letters. Loop has 3 letters. [2019-12-07 14:22:45,238 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:45,238 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 3 letters. Loop has 6 letters. [2019-12-07 14:22:45,238 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:45,239 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 34 transitions. [2019-12-07 14:22:45,240 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-12-07 14:22:45,240 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 21 states and 33 transitions. [2019-12-07 14:22:45,240 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2019-12-07 14:22:45,240 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2019-12-07 14:22:45,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 33 transitions. [2019-12-07 14:22:45,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 14:22:45,241 INFO L688 BuchiCegarLoop]: Abstraction has 21 states and 33 transitions. [2019-12-07 14:22:45,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 33 transitions. [2019-12-07 14:22:45,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2019-12-07 14:22:45,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-12-07 14:22:45,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 30 transitions. [2019-12-07 14:22:45,243 INFO L711 BuchiCegarLoop]: Abstraction has 19 states and 30 transitions. [2019-12-07 14:22:45,243 INFO L591 BuchiCegarLoop]: Abstraction has 19 states and 30 transitions. [2019-12-07 14:22:45,243 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 14:22:45,243 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 30 transitions. [2019-12-07 14:22:45,243 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-12-07 14:22:45,243 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 14:22:45,243 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 14:22:45,244 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-12-07 14:22:45,244 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 14:22:45,244 INFO L794 eck$LassoCheckResult]: Stem: 197#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 198#L13-1 assume !!(main_~i~0 > 10); 205#L10 assume 25 == main_~i~0;main_~i~0 := 30; 206#L10-2 assume !(main_~i~0 <= 30);main_~i~0 := 20; 199#L13-1 [2019-12-07 14:22:45,244 INFO L796 eck$LassoCheckResult]: Loop: 199#L13-1 assume !!(main_~i~0 > 10); 200#L10 assume 25 == main_~i~0;main_~i~0 := 30; 210#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 199#L13-1 [2019-12-07 14:22:45,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:45,244 INFO L82 PathProgramCache]: Analyzing trace with hash 963346, now seen corresponding path program 1 times [2019-12-07 14:22:45,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:22:45,245 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225683765] [2019-12-07 14:22:45,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:22:45,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:45,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:22:45,266 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225683765] [2019-12-07 14:22:45,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:22:45,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 14:22:45,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956073819] [2019-12-07 14:22:45,270 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 14:22:45,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:45,270 INFO L82 PathProgramCache]: Analyzing trace with hash 39823, now seen corresponding path program 3 times [2019-12-07 14:22:45,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:22:45,270 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628051186] [2019-12-07 14:22:45,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:22:45,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:45,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:45,275 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:22:45,292 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:22:45,292 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:22:45,293 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:22:45,293 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:22:45,293 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 14:22:45,293 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:45,293 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:22:45,293 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:22:45,293 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration3_Loop [2019-12-07 14:22:45,293 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:22:45,293 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:22:45,294 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:45,297 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:45,301 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:45,332 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:22:45,332 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/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) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:45,335 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:22:45,335 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:22:45,339 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:22:45,339 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_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/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) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:45,343 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:22:45,343 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/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) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:45,351 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 14:22:45,351 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:22:45,355 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 14:22:45,356 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:22:45,356 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:22:45,356 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:22:45,356 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:22:45,357 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 14:22:45,357 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:45,357 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:22:45,357 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:22:45,357 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration3_Loop [2019-12-07 14:22:45,357 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:22:45,357 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:22:45,358 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:45,364 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:45,367 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:45,395 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:22:45,395 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/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) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:45,398 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 [2019-12-07 14:22:45,399 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:22:45,399 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:22:45,400 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:22:45,400 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:22:45,400 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:22:45,401 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 14:22:45,401 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:22:45,402 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 14:22:45,404 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 14:22:45,404 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_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/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) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:45,407 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 14:22:45,407 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 14:22:45,407 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 14:22:45,407 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 27 Supporting invariants [] [2019-12-07 14:22:45,409 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 14:22:45,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:45,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:45,429 INFO L264 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:22:45,429 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:45,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:45,433 WARN L262 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 14:22:45,433 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:45,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:22:45,442 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 [2019-12-07 14:22:45,442 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 30 transitions. cyclomatic complexity: 15 Second operand 4 states. [2019-12-07 14:22:45,454 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 30 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 42 states and 66 transitions. Complement of second has 5 states. [2019-12-07 14:22:45,455 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 [2019-12-07 14:22:45,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 14:22:45,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-12-07 14:22:45,455 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 3 letters. [2019-12-07 14:22:45,455 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:45,455 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 14:22:45,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:45,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:45,468 INFO L264 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:22:45,468 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:45,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:45,471 WARN L262 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 14:22:45,472 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:45,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:22:45,480 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 14:22:45,480 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 30 transitions. cyclomatic complexity: 15 Second operand 4 states. [2019-12-07 14:22:45,499 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 30 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 44 states and 70 transitions. Complement of second has 7 states. [2019-12-07 14:22:45,499 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 [2019-12-07 14:22:45,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 14:22:45,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2019-12-07 14:22:45,500 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 4 letters. Loop has 3 letters. [2019-12-07 14:22:45,500 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:45,500 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 7 letters. Loop has 3 letters. [2019-12-07 14:22:45,500 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:45,500 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 4 letters. Loop has 6 letters. [2019-12-07 14:22:45,500 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:45,500 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 70 transitions. [2019-12-07 14:22:45,502 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2019-12-07 14:22:45,503 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 42 states and 68 transitions. [2019-12-07 14:22:45,503 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2019-12-07 14:22:45,503 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2019-12-07 14:22:45,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 68 transitions. [2019-12-07 14:22:45,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 14:22:45,503 INFO L688 BuchiCegarLoop]: Abstraction has 42 states and 68 transitions. [2019-12-07 14:22:45,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 68 transitions. [2019-12-07 14:22:45,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2019-12-07 14:22:45,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-12-07 14:22:45,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 63 transitions. [2019-12-07 14:22:45,507 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 63 transitions. [2019-12-07 14:22:45,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 14:22:45,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 14:22:45,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:22:45,509 INFO L87 Difference]: Start difference. First operand 40 states and 63 transitions. Second operand 3 states. [2019-12-07 14:22:45,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:22:45,522 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2019-12-07 14:22:45,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 14:22:45,523 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 39 transitions. [2019-12-07 14:22:45,524 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-12-07 14:22:45,524 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 26 states and 36 transitions. [2019-12-07 14:22:45,524 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2019-12-07 14:22:45,524 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2019-12-07 14:22:45,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 36 transitions. [2019-12-07 14:22:45,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 14:22:45,525 INFO L688 BuchiCegarLoop]: Abstraction has 26 states and 36 transitions. [2019-12-07 14:22:45,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 36 transitions. [2019-12-07 14:22:45,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2019-12-07 14:22:45,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-12-07 14:22:45,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 30 transitions. [2019-12-07 14:22:45,526 INFO L711 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2019-12-07 14:22:45,526 INFO L591 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2019-12-07 14:22:45,527 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 14:22:45,527 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 30 transitions. [2019-12-07 14:22:45,527 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 14:22:45,527 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 14:22:45,527 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 14:22:45,528 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1] [2019-12-07 14:22:45,528 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 14:22:45,528 INFO L794 eck$LassoCheckResult]: Stem: 441#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 442#L13-1 assume !!(main_~i~0 > 10); 453#L10 assume !(25 == main_~i~0); 457#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 449#L13-1 assume !!(main_~i~0 > 10); 437#L10 assume !(25 == main_~i~0); 438#L10-2 [2019-12-07 14:22:45,528 INFO L796 eck$LassoCheckResult]: Loop: 438#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 443#L13-1 assume !!(main_~i~0 > 10); 444#L10 assume 25 == main_~i~0;main_~i~0 := 30; 438#L10-2 [2019-12-07 14:22:45,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:45,528 INFO L82 PathProgramCache]: Analyzing trace with hash 925833491, now seen corresponding path program 1 times [2019-12-07 14:22:45,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:22:45,528 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69764527] [2019-12-07 14:22:45,528 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:22:45,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:45,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:45,534 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:22:45,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:45,535 INFO L82 PathProgramCache]: Analyzing trace with hash 48373, now seen corresponding path program 4 times [2019-12-07 14:22:45,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:22:45,535 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823009930] [2019-12-07 14:22:45,535 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:22:45,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:45,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:45,539 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:22:45,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:45,540 INFO L82 PathProgramCache]: Analyzing trace with hash -774425949, now seen corresponding path program 2 times [2019-12-07 14:22:45,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:22:45,540 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431206852] [2019-12-07 14:22:45,540 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:22:45,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:45,547 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:22:45,561 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:22:45,561 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:22:45,561 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:22:45,561 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:22:45,561 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 14:22:45,561 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:45,561 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:22:45,561 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:22:45,561 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration4_Loop [2019-12-07 14:22:45,562 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:22:45,562 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:22:45,562 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:45,566 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:45,569 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:45,595 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:22:45,595 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/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) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:45,603 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:22:45,603 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:45,612 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 14:22:45,612 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:22:45,615 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 14:22:45,616 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:22:45,616 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:22:45,616 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:22:45,616 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:22:45,616 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 14:22:45,617 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:45,617 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:22:45,617 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:22:45,617 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration4_Loop [2019-12-07 14:22:45,617 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:22:45,617 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:22:45,618 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:45,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:45,623 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:45,645 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:22:45,645 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/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) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:45,648 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 [2019-12-07 14:22:45,649 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:22:45,649 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:22:45,649 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:22:45,649 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:22:45,649 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:22:45,650 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 14:22:45,650 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:22:45,652 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 14:22:45,654 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 14:22:45,654 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_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/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) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:45,656 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 14:22:45,656 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 14:22:45,656 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 14:22:45,656 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 28 Supporting invariants [] [2019-12-07 14:22:45,657 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 14:22:45,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:45,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:45,668 INFO L264 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:22:45,669 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:45,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:45,671 WARN L262 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 14:22:45,671 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:45,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:22:45,676 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 [2019-12-07 14:22:45,676 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand 3 states. [2019-12-07 14:22:45,687 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 28 states and 41 transitions. Complement of second has 5 states. [2019-12-07 14:22:45,687 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 [2019-12-07 14:22:45,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 14:22:45,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-12-07 14:22:45,688 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 3 letters. [2019-12-07 14:22:45,688 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:45,688 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 14:22:45,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:45,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:45,698 INFO L264 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:22:45,698 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:45,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:45,700 WARN L262 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 14:22:45,701 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:45,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:22:45,706 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 14:22:45,706 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand 3 states. [2019-12-07 14:22:45,717 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 28 states and 41 transitions. Complement of second has 5 states. [2019-12-07 14:22:45,718 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 [2019-12-07 14:22:45,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 14:22:45,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-12-07 14:22:45,718 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 3 letters. [2019-12-07 14:22:45,718 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:45,718 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 14:22:45,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:45,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:45,728 INFO L264 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:22:45,728 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:45,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:45,731 WARN L262 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 14:22:45,731 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:45,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:22:45,736 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 14:22:45,736 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand 3 states. [2019-12-07 14:22:45,748 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 31 states and 47 transitions. Complement of second has 6 states. [2019-12-07 14:22:45,749 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 [2019-12-07 14:22:45,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 14:22:45,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2019-12-07 14:22:45,749 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2019-12-07 14:22:45,749 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:45,750 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 9 letters. Loop has 3 letters. [2019-12-07 14:22:45,750 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:45,750 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 6 letters. [2019-12-07 14:22:45,750 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:45,750 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 47 transitions. [2019-12-07 14:22:45,751 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-12-07 14:22:45,752 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 26 states and 37 transitions. [2019-12-07 14:22:45,752 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-12-07 14:22:45,752 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2019-12-07 14:22:45,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 37 transitions. [2019-12-07 14:22:45,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 14:22:45,753 INFO L688 BuchiCegarLoop]: Abstraction has 26 states and 37 transitions. [2019-12-07 14:22:45,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 37 transitions. [2019-12-07 14:22:45,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 13. [2019-12-07 14:22:45,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-12-07 14:22:45,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2019-12-07 14:22:45,754 INFO L711 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2019-12-07 14:22:45,754 INFO L591 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2019-12-07 14:22:45,754 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-12-07 14:22:45,754 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 19 transitions. [2019-12-07 14:22:45,755 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-12-07 14:22:45,755 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 14:22:45,755 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 14:22:45,755 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-12-07 14:22:45,755 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 14:22:45,755 INFO L794 eck$LassoCheckResult]: Stem: 664#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 665#L13-1 assume !!(main_~i~0 > 10); 671#L10 assume !(25 == main_~i~0); 672#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 666#L13-1 [2019-12-07 14:22:45,755 INFO L796 eck$LassoCheckResult]: Loop: 666#L13-1 assume !!(main_~i~0 > 10); 660#L10 assume !(25 == main_~i~0); 661#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 666#L13-1 [2019-12-07 14:22:45,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:45,755 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 2 times [2019-12-07 14:22:45,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:22:45,756 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830442327] [2019-12-07 14:22:45,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:22:45,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:45,761 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:22:45,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:45,761 INFO L82 PathProgramCache]: Analyzing trace with hash 39885, now seen corresponding path program 1 times [2019-12-07 14:22:45,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:22:45,762 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950642385] [2019-12-07 14:22:45,762 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:22:45,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:45,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:45,766 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:22:45,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:45,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1363932832, now seen corresponding path program 3 times [2019-12-07 14:22:45,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:22:45,767 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69472837] [2019-12-07 14:22:45,767 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:22:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:45,773 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:22:45,783 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:22:45,783 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:22:45,783 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:22:45,783 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:22:45,783 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 14:22:45,783 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:45,784 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:22:45,784 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:22:45,784 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration5_Loop [2019-12-07 14:22:45,784 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:22:45,784 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:22:45,784 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:45,790 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:45,792 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:45,837 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:22:45,837 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/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) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:45,840 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:22:45,840 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/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 [2019-12-07 14:22:45,845 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 14:22:45,845 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:22:45,859 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 14:22:45,860 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:22:45,861 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:22:45,861 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:22:45,861 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:22:45,861 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 14:22:45,861 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:45,861 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:22:45,861 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:22:45,861 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration5_Loop [2019-12-07 14:22:45,861 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:22:45,861 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:22:45,862 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:45,864 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:45,870 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:45,913 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:22:45,913 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/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) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:45,916 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 [2019-12-07 14:22:45,917 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:22:45,917 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:22:45,917 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:22:45,917 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:22:45,919 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 14:22:45,919 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 14:22:45,921 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/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) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:45,925 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 [2019-12-07 14:22:45,926 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:22:45,926 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:22:45,926 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:22:45,926 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-12-07 14:22:45,926 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:22:45,927 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-12-07 14:22:45,928 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:22:45,930 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 14:22:45,932 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-12-07 14:22:45,932 INFO L444 ModelExtractionUtils]: 1 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_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/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) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:45,934 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 14:22:45,935 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 14:22:45,935 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 14:22:45,935 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-12-07 14:22:45,937 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 14:22:45,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:45,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:45,947 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:22:45,947 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:45,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:45,949 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 14:22:45,949 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:45,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:22:45,955 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 [2019-12-07 14:22:45,955 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-12-07 14:22:45,962 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 35 states and 47 transitions. Complement of second has 5 states. [2019-12-07 14:22:45,962 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 [2019-12-07 14:22:45,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 14:22:45,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-12-07 14:22:45,963 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 3 letters. [2019-12-07 14:22:45,963 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:45,963 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2019-12-07 14:22:45,963 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:45,963 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 6 letters. [2019-12-07 14:22:45,963 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:45,963 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 47 transitions. [2019-12-07 14:22:45,964 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-12-07 14:22:45,964 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 29 states and 39 transitions. [2019-12-07 14:22:45,964 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-12-07 14:22:45,964 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-12-07 14:22:45,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 39 transitions. [2019-12-07 14:22:45,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 14:22:45,965 INFO L688 BuchiCegarLoop]: Abstraction has 29 states and 39 transitions. [2019-12-07 14:22:45,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 39 transitions. [2019-12-07 14:22:45,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2019-12-07 14:22:45,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-07 14:22:45,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2019-12-07 14:22:45,967 INFO L711 BuchiCegarLoop]: Abstraction has 24 states and 34 transitions. [2019-12-07 14:22:45,967 INFO L591 BuchiCegarLoop]: Abstraction has 24 states and 34 transitions. [2019-12-07 14:22:45,967 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-12-07 14:22:45,967 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 34 transitions. [2019-12-07 14:22:45,968 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-12-07 14:22:45,968 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 14:22:45,968 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 14:22:45,968 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1] [2019-12-07 14:22:45,968 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 14:22:45,969 INFO L794 eck$LassoCheckResult]: Stem: 753#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 754#L13-1 assume !!(main_~i~0 > 10); 768#L10 assume !(25 == main_~i~0); 769#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 756#L13-1 assume !!(main_~i~0 > 10); 757#L10 assume 25 == main_~i~0;main_~i~0 := 30; 760#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 761#L13-1 [2019-12-07 14:22:45,969 INFO L796 eck$LassoCheckResult]: Loop: 761#L13-1 assume !!(main_~i~0 > 10); 771#L10 assume !(25 == main_~i~0); 773#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 761#L13-1 [2019-12-07 14:22:45,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:45,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1363932894, now seen corresponding path program 3 times [2019-12-07 14:22:45,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:22:45,969 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009756096] [2019-12-07 14:22:45,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:22:45,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:45,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:45,976 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:22:45,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:45,977 INFO L82 PathProgramCache]: Analyzing trace with hash 39885, now seen corresponding path program 2 times [2019-12-07 14:22:45,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:22:45,977 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366835027] [2019-12-07 14:22:45,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:22:45,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:45,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:45,981 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:22:45,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:45,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1760752396, now seen corresponding path program 4 times [2019-12-07 14:22:45,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:22:45,982 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84369371] [2019-12-07 14:22:45,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:22:45,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:45,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:45,990 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:22:46,001 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:22:46,001 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:22:46,001 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:22:46,001 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:22:46,001 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 14:22:46,001 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:46,001 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:22:46,001 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:22:46,001 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration6_Loop [2019-12-07 14:22:46,001 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:22:46,001 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:22:46,002 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:46,007 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:46,009 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:46,055 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:22:46,055 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/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) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:46,057 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:22:46,057 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/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) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:46,066 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 14:22:46,066 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:22:46,082 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 14:22:46,084 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:22:46,084 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:22:46,084 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:22:46,084 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:22:46,084 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 14:22:46,084 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:46,084 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:22:46,084 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:22:46,084 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration6_Loop [2019-12-07 14:22:46,084 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:22:46,084 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:22:46,085 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:46,091 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:46,093 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:46,137 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:22:46,138 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/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 [2019-12-07 14:22:46,140 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 [2019-12-07 14:22:46,141 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:22:46,141 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:22:46,141 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:22:46,142 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-12-07 14:22:46,142 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:22:46,143 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-12-07 14:22:46,143 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:22:46,146 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 14:22:46,148 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-12-07 14:22:46,148 INFO L444 ModelExtractionUtils]: 1 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_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/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 [2019-12-07 14:22:46,151 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 14:22:46,151 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 14:22:46,151 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 14:22:46,151 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-12-07 14:22:46,153 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 14:22:46,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:46,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:46,163 INFO L264 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:22:46,163 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:46,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:46,166 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 14:22:46,166 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:46,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:22:46,173 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 [2019-12-07 14:22:46,173 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13 Second operand 3 states. [2019-12-07 14:22:46,180 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 35 states and 47 transitions. Complement of second has 5 states. [2019-12-07 14:22:46,180 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 [2019-12-07 14:22:46,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 14:22:46,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-12-07 14:22:46,181 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2019-12-07 14:22:46,181 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:46,181 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 14:22:46,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:46,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:46,191 INFO L264 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:22:46,191 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:46,193 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 14:22:46,193 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:46,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:22:46,199 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 14:22:46,199 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13 Second operand 3 states. [2019-12-07 14:22:46,204 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 35 states and 47 transitions. Complement of second has 5 states. [2019-12-07 14:22:46,204 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 [2019-12-07 14:22:46,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 14:22:46,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-12-07 14:22:46,205 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2019-12-07 14:22:46,205 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:46,205 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 14:22:46,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:46,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:46,215 INFO L264 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:22:46,215 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:46,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:46,217 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 14:22:46,218 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:46,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:22:46,223 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 14:22:46,223 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13 Second operand 3 states. [2019-12-07 14:22:46,230 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 37 states and 52 transitions. Complement of second has 4 states. [2019-12-07 14:22:46,230 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 [2019-12-07 14:22:46,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 14:22:46,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2019-12-07 14:22:46,231 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 3 letters. [2019-12-07 14:22:46,231 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:46,231 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 10 letters. Loop has 3 letters. [2019-12-07 14:22:46,231 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:46,231 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 6 letters. [2019-12-07 14:22:46,231 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:46,231 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 52 transitions. [2019-12-07 14:22:46,232 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2019-12-07 14:22:46,232 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 28 states and 38 transitions. [2019-12-07 14:22:46,232 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-12-07 14:22:46,232 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-12-07 14:22:46,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 38 transitions. [2019-12-07 14:22:46,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 14:22:46,233 INFO L688 BuchiCegarLoop]: Abstraction has 28 states and 38 transitions. [2019-12-07 14:22:46,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 38 transitions. [2019-12-07 14:22:46,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 18. [2019-12-07 14:22:46,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-12-07 14:22:46,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 26 transitions. [2019-12-07 14:22:46,234 INFO L711 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2019-12-07 14:22:46,234 INFO L591 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2019-12-07 14:22:46,234 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-12-07 14:22:46,234 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 26 transitions. [2019-12-07 14:22:46,234 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-12-07 14:22:46,234 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 14:22:46,234 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 14:22:46,234 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-12-07 14:22:46,235 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1] [2019-12-07 14:22:46,235 INFO L794 eck$LassoCheckResult]: Stem: 1006#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 1007#L13-1 assume !!(main_~i~0 > 10); 1012#L10 assume !(25 == main_~i~0); 1013#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1008#L13-1 [2019-12-07 14:22:46,235 INFO L796 eck$LassoCheckResult]: Loop: 1008#L13-1 assume !!(main_~i~0 > 10); 1005#L10 assume !(25 == main_~i~0); 1004#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1011#L13-1 assume !!(main_~i~0 > 10); 1015#L10 assume 25 == main_~i~0;main_~i~0 := 30; 1014#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1008#L13-1 [2019-12-07 14:22:46,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:46,235 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 4 times [2019-12-07 14:22:46,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:22:46,235 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294154001] [2019-12-07 14:22:46,235 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:22:46,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:46,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:46,239 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:22:46,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:46,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1188224067, now seen corresponding path program 1 times [2019-12-07 14:22:46,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:22:46,239 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741612320] [2019-12-07 14:22:46,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:22:46,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:46,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:46,243 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:22:46,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:46,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1762599376, now seen corresponding path program 5 times [2019-12-07 14:22:46,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:22:46,244 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397162553] [2019-12-07 14:22:46,244 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:22:46,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:46,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:46,249 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:22:46,267 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:22:46,267 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:22:46,267 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:22:46,267 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:22:46,267 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 14:22:46,268 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:46,268 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:22:46,268 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:22:46,268 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration7_Loop [2019-12-07 14:22:46,268 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:22:46,268 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:22:46,268 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:46,272 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:46,273 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:46,305 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:22:46,305 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/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 [2019-12-07 14:22:46,311 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:22:46,311 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/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 [2019-12-07 14:22:46,318 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 14:22:46,318 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:22:46,322 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 14:22:46,323 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:22:46,323 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:22:46,324 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:22:46,324 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:22:46,324 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 14:22:46,324 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:46,324 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:22:46,324 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:22:46,324 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration7_Loop [2019-12-07 14:22:46,324 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:22:46,324 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:22:46,325 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:46,329 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:46,330 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:46,355 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:22:46,355 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/bin/uautomizer/z3 Starting monitored process 37 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 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:46,358 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 [2019-12-07 14:22:46,359 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:22:46,359 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:22:46,359 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:22:46,359 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:22:46,359 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:22:46,360 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 14:22:46,360 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:22:46,362 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 14:22:46,363 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 14:22:46,363 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_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/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 [2019-12-07 14:22:46,366 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 14:22:46,366 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 14:22:46,366 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 14:22:46,366 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 55 Supporting invariants [] [2019-12-07 14:22:46,368 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 14:22:46,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:46,378 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:22:46,378 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:46,381 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 14:22:46,381 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:46,393 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:22:46,394 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 [2019-12-07 14:22:46,394 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 10 Second operand 5 states. [2019-12-07 14:22:46,410 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 10. Second operand 5 states. Result 55 states and 74 transitions. Complement of second has 7 states. [2019-12-07 14:22:46,411 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 [2019-12-07 14:22:46,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 14:22:46,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2019-12-07 14:22:46,411 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 6 letters. [2019-12-07 14:22:46,411 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:46,411 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 14:22:46,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:46,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:46,422 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:22:46,423 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:46,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:46,425 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 14:22:46,426 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:46,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:22:46,440 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 [2019-12-07 14:22:46,440 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 10 Second operand 5 states. [2019-12-07 14:22:46,463 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 10. Second operand 5 states. Result 48 states and 64 transitions. Complement of second has 9 states. [2019-12-07 14:22:46,464 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 [2019-12-07 14:22:46,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 14:22:46,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2019-12-07 14:22:46,464 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 4 letters. Loop has 6 letters. [2019-12-07 14:22:46,464 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:46,464 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 10 letters. Loop has 6 letters. [2019-12-07 14:22:46,464 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:46,464 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 4 letters. Loop has 12 letters. [2019-12-07 14:22:46,465 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:46,465 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 64 transitions. [2019-12-07 14:22:46,465 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-12-07 14:22:46,466 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 38 states and 52 transitions. [2019-12-07 14:22:46,466 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-12-07 14:22:46,466 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-12-07 14:22:46,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 52 transitions. [2019-12-07 14:22:46,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 14:22:46,466 INFO L688 BuchiCegarLoop]: Abstraction has 38 states and 52 transitions. [2019-12-07 14:22:46,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 52 transitions. [2019-12-07 14:22:46,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2019-12-07 14:22:46,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-07 14:22:46,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 44 transitions. [2019-12-07 14:22:46,468 INFO L711 BuchiCegarLoop]: Abstraction has 31 states and 44 transitions. [2019-12-07 14:22:46,468 INFO L591 BuchiCegarLoop]: Abstraction has 31 states and 44 transitions. [2019-12-07 14:22:46,468 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-12-07 14:22:46,468 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 44 transitions. [2019-12-07 14:22:46,468 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-12-07 14:22:46,468 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 14:22:46,468 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 14:22:46,469 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 3, 1, 1] [2019-12-07 14:22:46,469 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1] [2019-12-07 14:22:46,469 INFO L794 eck$LassoCheckResult]: Stem: 1226#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 1227#L13-1 assume !!(main_~i~0 > 10); 1234#L10 assume !(25 == main_~i~0); 1235#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1228#L13-1 assume !!(main_~i~0 > 10); 1230#L10 assume !(25 == main_~i~0); 1251#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1247#L13-1 assume !!(main_~i~0 > 10); 1248#L10 assume !(25 == main_~i~0); 1246#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1238#L13-1 assume !!(main_~i~0 > 10); 1245#L10 assume 25 == main_~i~0;main_~i~0 := 30; 1236#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1237#L13-1 [2019-12-07 14:22:46,469 INFO L796 eck$LassoCheckResult]: Loop: 1237#L13-1 assume !!(main_~i~0 > 10); 1248#L10 assume !(25 == main_~i~0); 1246#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1238#L13-1 assume !!(main_~i~0 > 10); 1245#L10 assume 25 == main_~i~0;main_~i~0 := 30; 1236#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1237#L13-1 [2019-12-07 14:22:46,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:46,469 INFO L82 PathProgramCache]: Analyzing trace with hash -670293406, now seen corresponding path program 6 times [2019-12-07 14:22:46,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:22:46,469 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87105938] [2019-12-07 14:22:46,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:22:46,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:46,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:46,476 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:22:46,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:46,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1188224067, now seen corresponding path program 2 times [2019-12-07 14:22:46,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:22:46,476 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129287596] [2019-12-07 14:22:46,476 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:22:46,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:46,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:46,480 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:22:46,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:46,481 INFO L82 PathProgramCache]: Analyzing trace with hash -2063994396, now seen corresponding path program 7 times [2019-12-07 14:22:46,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:22:46,481 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718061616] [2019-12-07 14:22:46,481 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:22:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:46,498 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-12-07 14:22:46,499 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718061616] [2019-12-07 14:22:46,499 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089094902] [2019-12-07 14:22:46,499 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/bin/uautomizer/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:22:46,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:46,516 INFO L264 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 14:22:46,516 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:46,520 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-12-07 14:22:46,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 14:22:46,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-12-07 14:22:46,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202854245] [2019-12-07 14:22:46,537 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:22:46,537 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:22:46,537 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:22:46,537 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:22:46,537 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 14:22:46,537 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:46,537 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:22:46,537 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:22:46,537 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration8_Loop [2019-12-07 14:22:46,537 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:22:46,537 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:22:46,538 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:46,539 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:46,542 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:46,563 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:22:46,563 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/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 [2019-12-07 14:22:46,574 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:22:46,574 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:22:46,577 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:22:46,577 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_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/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) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:46,581 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:22:46,581 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/bin/uautomizer/z3 Starting monitored process 42 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 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:46,588 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 14:22:46,588 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:22:46,591 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 14:22:46,592 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:22:46,592 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:22:46,592 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:22:46,592 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:22:46,592 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 14:22:46,593 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:46,593 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:22:46,593 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:22:46,593 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration8_Loop [2019-12-07 14:22:46,593 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:22:46,593 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:22:46,593 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:46,595 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:46,598 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:46,617 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:22:46,617 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/bin/uautomizer/z3 Starting monitored process 43 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 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:46,620 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 [2019-12-07 14:22:46,621 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:22:46,621 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:22:46,621 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:22:46,621 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:22:46,622 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 14:22:46,622 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 14:22:46,625 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/bin/uautomizer/z3 Starting monitored process 44 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 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:46,629 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 [2019-12-07 14:22:46,630 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:22:46,630 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:22:46,630 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:22:46,630 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:22:46,630 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:22:46,631 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 14:22:46,631 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:22:46,633 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 14:22:46,635 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 14:22:46,635 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_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/bin/uautomizer/z3 Starting monitored process 45 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 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:46,637 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 14:22:46,637 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 14:22:46,637 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 14:22:46,637 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 55 Supporting invariants [] [2019-12-07 14:22:46,639 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 14:22:46,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:46,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:46,651 INFO L264 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:22:46,651 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:46,654 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 14:22:46,654 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:46,667 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:22:46,667 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 [2019-12-07 14:22:46,667 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17 Second operand 5 states. [2019-12-07 14:22:46,680 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17. Second operand 5 states. Result 81 states and 107 transitions. Complement of second has 7 states. [2019-12-07 14:22:46,681 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 [2019-12-07 14:22:46,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 14:22:46,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2019-12-07 14:22:46,681 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 13 letters. Loop has 6 letters. [2019-12-07 14:22:46,681 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:46,681 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 14:22:46,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:46,692 INFO L264 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:22:46,692 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:46,695 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 14:22:46,695 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:46,707 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:22:46,708 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 [2019-12-07 14:22:46,708 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17 Second operand 5 states. [2019-12-07 14:22:46,728 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17. Second operand 5 states. Result 55 states and 74 transitions. Complement of second has 9 states. [2019-12-07 14:22:46,728 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 [2019-12-07 14:22:46,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 14:22:46,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2019-12-07 14:22:46,728 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 13 letters. Loop has 6 letters. [2019-12-07 14:22:46,728 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:46,728 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 14:22:46,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:46,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:46,739 INFO L264 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:22:46,739 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:46,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:46,742 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 14:22:46,742 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:46,755 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:22:46,755 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 [2019-12-07 14:22:46,755 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17 Second operand 5 states. [2019-12-07 14:22:46,768 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17. Second operand 5 states. Result 101 states and 141 transitions. Complement of second has 10 states. [2019-12-07 14:22:46,769 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 [2019-12-07 14:22:46,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 14:22:46,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-12-07 14:22:46,769 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 13 letters. Loop has 6 letters. [2019-12-07 14:22:46,770 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:46,770 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 14:22:46,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:46,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:46,781 INFO L264 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:22:46,781 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:46,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:46,784 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 14:22:46,784 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:46,797 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:22:46,797 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2019-12-07 14:22:46,797 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17 Second operand 5 states. [2019-12-07 14:22:46,819 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17. Second operand 5 states. Result 76 states and 101 transitions. Complement of second has 11 states. [2019-12-07 14:22:46,819 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 [2019-12-07 14:22:46,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 14:22:46,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2019-12-07 14:22:46,820 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 13 letters. Loop has 6 letters. [2019-12-07 14:22:46,820 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:46,820 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 19 letters. Loop has 6 letters. [2019-12-07 14:22:46,820 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:46,820 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 13 letters. Loop has 12 letters. [2019-12-07 14:22:46,821 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:46,821 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 76 states and 101 transitions. [2019-12-07 14:22:46,822 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2019-12-07 14:22:46,823 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 76 states to 49 states and 65 transitions. [2019-12-07 14:22:46,823 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-12-07 14:22:46,823 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-12-07 14:22:46,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 65 transitions. [2019-12-07 14:22:46,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 14:22:46,823 INFO L688 BuchiCegarLoop]: Abstraction has 49 states and 65 transitions. [2019-12-07 14:22:46,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 65 transitions. [2019-12-07 14:22:46,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 27. [2019-12-07 14:22:46,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-12-07 14:22:46,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 39 transitions. [2019-12-07 14:22:46,826 INFO L711 BuchiCegarLoop]: Abstraction has 27 states and 39 transitions. [2019-12-07 14:22:46,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 14:22:46,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 14:22:46,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-12-07 14:22:46,826 INFO L87 Difference]: Start difference. First operand 27 states and 39 transitions. Second operand 5 states. [2019-12-07 14:22:46,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:22:46,840 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2019-12-07 14:22:46,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 14:22:46,840 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 54 transitions. [2019-12-07 14:22:46,841 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2019-12-07 14:22:46,841 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 34 states and 42 transitions. [2019-12-07 14:22:46,842 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2019-12-07 14:22:46,842 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2019-12-07 14:22:46,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 42 transitions. [2019-12-07 14:22:46,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 14:22:46,842 INFO L688 BuchiCegarLoop]: Abstraction has 34 states and 42 transitions. [2019-12-07 14:22:46,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 42 transitions. [2019-12-07 14:22:46,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 27. [2019-12-07 14:22:46,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-12-07 14:22:46,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2019-12-07 14:22:46,843 INFO L711 BuchiCegarLoop]: Abstraction has 27 states and 34 transitions. [2019-12-07 14:22:46,843 INFO L591 BuchiCegarLoop]: Abstraction has 27 states and 34 transitions. [2019-12-07 14:22:46,843 INFO L424 BuchiCegarLoop]: ======== Iteration 9============ [2019-12-07 14:22:46,844 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 34 transitions. [2019-12-07 14:22:46,844 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2019-12-07 14:22:46,844 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 14:22:46,844 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 14:22:46,844 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-12-07 14:22:46,844 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [3, 3, 2, 1] [2019-12-07 14:22:46,844 INFO L794 eck$LassoCheckResult]: Stem: 1992#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 1993#L13-1 assume !!(main_~i~0 > 10); 2008#L10 assume !(25 == main_~i~0); 2010#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1994#L13-1 [2019-12-07 14:22:46,844 INFO L796 eck$LassoCheckResult]: Loop: 1994#L13-1 assume !!(main_~i~0 > 10); 1988#L10 assume 25 == main_~i~0;main_~i~0 := 30; 1989#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1996#L13-1 assume !!(main_~i~0 > 10); 1990#L10 assume !(25 == main_~i~0); 1991#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1997#L13-1 assume !!(main_~i~0 > 10); 2014#L10 assume !(25 == main_~i~0); 2013#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1994#L13-1 [2019-12-07 14:22:46,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:46,845 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 5 times [2019-12-07 14:22:46,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:22:46,845 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800164312] [2019-12-07 14:22:46,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:22:46,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:46,848 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:22:46,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:46,848 INFO L82 PathProgramCache]: Analyzing trace with hash 73930127, now seen corresponding path program 3 times [2019-12-07 14:22:46,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:22:46,849 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928872305] [2019-12-07 14:22:46,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:22:46,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:46,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:46,853 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:22:46,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:46,853 INFO L82 PathProgramCache]: Analyzing trace with hash 139053282, now seen corresponding path program 8 times [2019-12-07 14:22:46,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:22:46,854 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697956719] [2019-12-07 14:22:46,854 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:22:46,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:46,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:46,859 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:22:46,881 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:22:46,881 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:22:46,882 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:22:46,882 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:22:46,882 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 14:22:46,882 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:46,882 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:22:46,882 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:22:46,882 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration9_Loop [2019-12-07 14:22:46,882 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:22:46,882 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:22:46,883 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:46,884 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:46,887 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:46,908 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:22:46,908 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/bin/uautomizer/z3 Starting monitored process 46 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 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:46,911 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:22:46,911 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:22:46,914 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:22:46,914 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_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/bin/uautomizer/z3 Starting monitored process 47 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 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:46,923 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:22:46,923 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/bin/uautomizer/z3 Starting monitored process 48 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 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:46,930 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 14:22:46,930 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:22:46,934 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 14:22:46,935 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:22:46,935 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:22:46,935 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:22:46,935 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:22:46,935 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 14:22:46,935 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:46,935 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:22:46,935 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:22:46,935 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration9_Loop [2019-12-07 14:22:46,935 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:22:46,935 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:22:46,936 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:46,938 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:46,940 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:46,962 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:22:46,962 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/bin/uautomizer/z3 Starting monitored process 49 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 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:46,965 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 [2019-12-07 14:22:46,966 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:22:46,966 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:22:46,967 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:22:46,967 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:22:46,968 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 14:22:46,968 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 14:22:46,971 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/bin/uautomizer/z3 Starting monitored process 50 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 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:46,975 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 [2019-12-07 14:22:46,976 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:22:46,976 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:22:46,977 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:22:46,977 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:22:46,978 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 14:22:46,978 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 14:22:46,981 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/bin/uautomizer/z3 Starting monitored process 51 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 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:46,984 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 [2019-12-07 14:22:46,986 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:22:46,986 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:22:46,986 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:22:46,986 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:22:46,986 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:22:46,987 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 14:22:46,987 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:22:46,988 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 14:22:46,990 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 14:22:46,990 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_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/bin/uautomizer/z3 Starting monitored process 52 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 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:46,992 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 14:22:46,992 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 14:22:46,992 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 14:22:46,993 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 26 Supporting invariants [] [2019-12-07 14:22:46,994 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 14:22:47,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:47,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:47,006 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:22:47,007 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:47,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:47,009 INFO L264 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 14:22:47,010 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:47,030 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:22:47,030 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 [2019-12-07 14:22:47,030 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand 6 states. [2019-12-07 14:22:47,036 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8. Second operand 6 states. Result 39 states and 47 transitions. Complement of second has 5 states. [2019-12-07 14:22:47,036 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 [2019-12-07 14:22:47,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-12-07 14:22:47,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-12-07 14:22:47,036 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 9 letters. [2019-12-07 14:22:47,036 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:47,036 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 14:22:47,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:47,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:47,045 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:22:47,045 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:47,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:47,049 INFO L264 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 14:22:47,049 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:47,069 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:22:47,070 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 4 loop predicates [2019-12-07 14:22:47,070 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand 6 states. [2019-12-07 14:22:47,081 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8. Second operand 6 states. Result 40 states and 49 transitions. Complement of second has 7 states. [2019-12-07 14:22:47,081 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 [2019-12-07 14:22:47,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-12-07 14:22:47,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2019-12-07 14:22:47,082 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 4 letters. Loop has 9 letters. [2019-12-07 14:22:47,082 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:47,082 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 14:22:47,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:47,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:47,092 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:22:47,092 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:47,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:47,095 INFO L264 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 14:22:47,095 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:47,116 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:22:47,116 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 4 loop predicates [2019-12-07 14:22:47,116 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand 6 states. [2019-12-07 14:22:47,122 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8. Second operand 6 states. Result 39 states and 49 transitions. Complement of second has 5 states. [2019-12-07 14:22:47,122 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 [2019-12-07 14:22:47,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-12-07 14:22:47,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2019-12-07 14:22:47,122 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 4 letters. Loop has 9 letters. [2019-12-07 14:22:47,122 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:47,122 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 14:22:47,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:47,135 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:22:47,135 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:47,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:47,139 INFO L264 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 14:22:47,139 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:47,160 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:22:47,161 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 4 loop predicates [2019-12-07 14:22:47,161 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand 6 states. [2019-12-07 14:22:47,172 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8. Second operand 6 states. Result 41 states and 51 transitions. Complement of second has 6 states. [2019-12-07 14:22:47,172 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 [2019-12-07 14:22:47,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-12-07 14:22:47,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2019-12-07 14:22:47,173 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 4 letters. Loop has 9 letters. [2019-12-07 14:22:47,173 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:47,173 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 14:22:47,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:47,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:47,182 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:22:47,182 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:47,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:47,185 INFO L264 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 14:22:47,185 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:47,204 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:22:47,205 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemin loopwithout honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2019-12-07 14:22:47,205 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand 6 states. [2019-12-07 14:22:47,262 INFO L108 BuchiDifferenceFKV]: Finished buchiDifferenceFKV. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand 6 states. Result 210 states and 292 transitions. Complement of second has 48 states 9 powerset states39 rank states. The highest rank that occured is 5 [2019-12-07 14:22:47,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2019-12-07 14:22:47,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-12-07 14:22:47,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 34 transitions. [2019-12-07 14:22:47,263 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 4 letters. Loop has 9 letters. [2019-12-07 14:22:47,263 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:47,263 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 13 letters. Loop has 9 letters. [2019-12-07 14:22:47,263 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:47,263 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 4 letters. Loop has 18 letters. [2019-12-07 14:22:47,265 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:47,265 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 210 states and 292 transitions. [2019-12-07 14:22:47,267 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2019-12-07 14:22:47,267 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 210 states to 98 states and 131 transitions. [2019-12-07 14:22:47,267 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-12-07 14:22:47,268 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-12-07 14:22:47,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 98 states and 131 transitions. [2019-12-07 14:22:47,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 14:22:47,268 INFO L688 BuchiCegarLoop]: Abstraction has 98 states and 131 transitions. [2019-12-07 14:22:47,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states and 131 transitions. [2019-12-07 14:22:47,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 58. [2019-12-07 14:22:47,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-12-07 14:22:47,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 83 transitions. [2019-12-07 14:22:47,271 INFO L711 BuchiCegarLoop]: Abstraction has 58 states and 83 transitions. [2019-12-07 14:22:47,271 INFO L591 BuchiCegarLoop]: Abstraction has 58 states and 83 transitions. [2019-12-07 14:22:47,271 INFO L424 BuchiCegarLoop]: ======== Iteration 10============ [2019-12-07 14:22:47,271 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 83 transitions. [2019-12-07 14:22:47,271 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2019-12-07 14:22:47,271 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 14:22:47,271 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 14:22:47,272 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-12-07 14:22:47,272 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [4, 4, 3, 1] [2019-12-07 14:22:47,272 INFO L794 eck$LassoCheckResult]: Stem: 2689#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 2691#L13-1 assume !!(main_~i~0 > 10); 2705#L10 assume !(25 == main_~i~0); 2701#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 2692#L13-1 [2019-12-07 14:22:47,272 INFO L796 eck$LassoCheckResult]: Loop: 2692#L13-1 assume !!(main_~i~0 > 10); 2693#L10 assume 25 == main_~i~0;main_~i~0 := 30; 2741#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 2739#L13-1 assume !!(main_~i~0 > 10); 2734#L10 assume !(25 == main_~i~0); 2732#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 2727#L13-1 assume !!(main_~i~0 > 10); 2714#L10 assume !(25 == main_~i~0); 2726#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 2725#L13-1 assume !!(main_~i~0 > 10); 2698#L10 assume !(25 == main_~i~0); 2696#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 2692#L13-1 [2019-12-07 14:22:47,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:47,272 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 6 times [2019-12-07 14:22:47,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:22:47,272 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694352849] [2019-12-07 14:22:47,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:22:47,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:47,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:47,275 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:22:47,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:47,276 INFO L82 PathProgramCache]: Analyzing trace with hash -865799297, now seen corresponding path program 4 times [2019-12-07 14:22:47,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:22:47,276 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458067572] [2019-12-07 14:22:47,276 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:22:47,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:47,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:47,281 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:22:47,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:47,281 INFO L82 PathProgramCache]: Analyzing trace with hash -2107106484, now seen corresponding path program 9 times [2019-12-07 14:22:47,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:22:47,281 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793697462] [2019-12-07 14:22:47,281 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:22:47,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:47,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:47,287 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:22:47,314 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:22:47,314 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:22:47,314 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:22:47,314 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:22:47,314 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 14:22:47,314 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:47,314 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:22:47,314 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:22:47,315 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration10_Loop [2019-12-07 14:22:47,315 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:22:47,315 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:22:47,315 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:47,318 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:47,319 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:47,344 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:22:47,344 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/bin/uautomizer/z3 Starting monitored process 53 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 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:47,347 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:22:47,347 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/bin/uautomizer/z3 Starting monitored process 54 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 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:47,353 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 14:22:47,353 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:22:47,357 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 14:22:47,358 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:22:47,358 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:22:47,358 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:22:47,358 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:22:47,358 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 14:22:47,359 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:47,359 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:22:47,359 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:22:47,359 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration10_Loop [2019-12-07 14:22:47,359 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:22:47,359 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:22:47,359 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:47,363 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:47,364 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:22:47,389 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:22:47,389 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/bin/uautomizer/z3 Starting monitored process 55 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 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:47,391 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 [2019-12-07 14:22:47,392 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:22:47,392 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:22:47,392 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:22:47,392 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:22:47,392 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:22:47,393 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 14:22:47,393 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:22:47,394 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 14:22:47,396 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 14:22:47,396 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_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/bin/uautomizer/z3 Starting monitored process 56 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 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:22:47,399 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 14:22:47,399 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 14:22:47,399 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 14:22:47,399 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 51 Supporting invariants [] [2019-12-07 14:22:47,400 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 14:22:47,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:47,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:47,410 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:22:47,410 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:47,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:47,413 INFO L264 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 14:22:47,413 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:47,445 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:22:47,445 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 [2019-12-07 14:22:47,445 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand 7 states. [2019-12-07 14:22:47,453 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27. Second operand 7 states. Result 101 states and 129 transitions. Complement of second has 5 states. [2019-12-07 14:22:47,453 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 [2019-12-07 14:22:47,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-12-07 14:22:47,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-12-07 14:22:47,454 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 12 letters. [2019-12-07 14:22:47,454 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:47,454 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 14:22:47,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:47,463 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:22:47,464 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:47,466 INFO L264 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 14:22:47,467 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:47,499 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:22:47,500 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 5 loop predicates [2019-12-07 14:22:47,500 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand 7 states. [2019-12-07 14:22:47,514 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27. Second operand 7 states. Result 106 states and 135 transitions. Complement of second has 7 states. [2019-12-07 14:22:47,514 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 [2019-12-07 14:22:47,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-12-07 14:22:47,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2019-12-07 14:22:47,514 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 4 letters. Loop has 12 letters. [2019-12-07 14:22:47,515 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:47,515 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 14:22:47,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:47,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:47,524 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:22:47,524 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:47,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:47,527 INFO L264 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 14:22:47,527 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:47,559 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:22:47,560 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 5 loop predicates [2019-12-07 14:22:47,560 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand 7 states. [2019-12-07 14:22:47,566 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27. Second operand 7 states. Result 95 states and 126 transitions. Complement of second has 5 states. [2019-12-07 14:22:47,566 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 [2019-12-07 14:22:47,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-12-07 14:22:47,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2019-12-07 14:22:47,567 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 4 letters. Loop has 12 letters. [2019-12-07 14:22:47,567 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:47,567 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 14:22:47,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:47,576 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:22:47,576 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:47,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:47,580 INFO L264 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 14:22:47,580 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:47,625 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:22:47,625 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 5 loop predicates [2019-12-07 14:22:47,625 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand 7 states. [2019-12-07 14:22:47,641 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27. Second operand 7 states. Result 99 states and 128 transitions. Complement of second has 6 states. [2019-12-07 14:22:47,642 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 [2019-12-07 14:22:47,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-12-07 14:22:47,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2019-12-07 14:22:47,642 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 4 letters. Loop has 12 letters. [2019-12-07 14:22:47,642 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:47,642 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 14:22:47,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:47,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:47,652 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:22:47,652 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:47,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:22:47,656 INFO L264 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 14:22:47,656 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:22:47,692 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:22:47,692 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemin loopwithout honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2019-12-07 14:22:47,692 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand 7 states. [2019-12-07 14:22:47,802 INFO L108 BuchiDifferenceFKV]: Finished buchiDifferenceFKV. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand 7 states. Result 1058 states and 1452 transitions. Complement of second has 131 states 20 powerset states111 rank states. The highest rank that occured is 5 [2019-12-07 14:22:47,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2019-12-07 14:22:47,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-12-07 14:22:47,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 45 transitions. [2019-12-07 14:22:47,804 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 45 transitions. Stem has 4 letters. Loop has 12 letters. [2019-12-07 14:22:47,804 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:47,804 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 45 transitions. Stem has 16 letters. Loop has 12 letters. [2019-12-07 14:22:47,804 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:47,804 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 45 transitions. Stem has 4 letters. Loop has 24 letters. [2019-12-07 14:22:47,805 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:22:47,805 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1058 states and 1452 transitions. [2019-12-07 14:22:47,813 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 26 [2019-12-07 14:22:47,815 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1058 states to 212 states and 312 transitions. [2019-12-07 14:22:47,815 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-12-07 14:22:47,815 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-12-07 14:22:47,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 212 states and 312 transitions. [2019-12-07 14:22:47,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 14:22:47,815 INFO L688 BuchiCegarLoop]: Abstraction has 212 states and 312 transitions. [2019-12-07 14:22:47,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states and 312 transitions. [2019-12-07 14:22:47,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 126. [2019-12-07 14:22:47,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2019-12-07 14:22:47,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 200 transitions. [2019-12-07 14:22:47,823 INFO L711 BuchiCegarLoop]: Abstraction has 126 states and 200 transitions. [2019-12-07 14:22:47,823 INFO L591 BuchiCegarLoop]: Abstraction has 126 states and 200 transitions. [2019-12-07 14:22:47,823 INFO L424 BuchiCegarLoop]: ======== Iteration 11============ [2019-12-07 14:22:47,823 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 126 states and 200 transitions. [2019-12-07 14:22:47,824 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2019-12-07 14:22:47,824 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 14:22:47,824 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 14:22:47,824 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-12-07 14:22:47,824 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [5, 5, 4, 1] [2019-12-07 14:22:47,825 INFO L794 eck$LassoCheckResult]: Stem: 4641#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 4645#L13-1 assume !!(main_~i~0 > 10); 4657#L10 assume !(25 == main_~i~0); 4655#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4646#L13-1 [2019-12-07 14:22:47,825 INFO L796 eck$LassoCheckResult]: Loop: 4646#L13-1 assume !!(main_~i~0 > 10); 4647#L10 assume 25 == main_~i~0;main_~i~0 := 30; 4761#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4759#L13-1 assume !!(main_~i~0 > 10); 4757#L10 assume !(25 == main_~i~0); 4755#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4751#L13-1 assume !!(main_~i~0 > 10); 4748#L10 assume !(25 == main_~i~0); 4746#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4741#L13-1 assume !!(main_~i~0 > 10); 4660#L10 assume !(25 == main_~i~0); 4689#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4687#L13-1 assume !!(main_~i~0 > 10); 4652#L10 assume !(25 == main_~i~0); 4650#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4646#L13-1 [2019-12-07 14:22:47,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:47,825 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 7 times [2019-12-07 14:22:47,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:22:47,825 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145027561] [2019-12-07 14:22:47,825 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:22:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:47,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:47,829 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:22:47,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:47,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1748234353, now seen corresponding path program 5 times [2019-12-07 14:22:47,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:22:47,830 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524704963] [2019-12-07 14:22:47,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:22:47,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:47,837 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:22:47,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:22:47,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1862223710, now seen corresponding path program 10 times [2019-12-07 14:22:47,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:22:47,837 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977637072] [2019-12-07 14:22:47,837 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:22:47,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:22:47,845 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:22:47,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 02:22:47 BoogieIcfgContainer [2019-12-07 14:22:47,900 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 14:22:47,900 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 14:22:47,900 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 14:22:47,900 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 14:22:47,900 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:22:44" (3/4) ... [2019-12-07 14:22:47,902 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-12-07 14:22:47,929 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d9ecdce2-7a90-4d6f-9bf5-cdf190f46c82/bin/uautomizer/witness.graphml [2019-12-07 14:22:47,930 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 14:22:47,931 INFO L168 Benchmark]: Toolchain (without parser) took 3846.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 949.0 MB in the beginning and 1.1 GB in the end (delta: -158.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:22:47,931 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 964.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:22:47,932 INFO L168 Benchmark]: CACSL2BoogieTranslator took 163.35 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 88.6 MB). Free memory was 949.0 MB in the beginning and 1.1 GB in the end (delta: -134.4 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. [2019-12-07 14:22:47,932 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.74 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:22:47,932 INFO L168 Benchmark]: Boogie Preprocessor took 12.57 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:22:47,932 INFO L168 Benchmark]: RCFGBuilder took 140.44 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. [2019-12-07 14:22:47,933 INFO L168 Benchmark]: BuchiAutomizer took 3477.49 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 62.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -48.5 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2019-12-07 14:22:47,933 INFO L168 Benchmark]: Witness Printer took 29.72 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: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 11.5 GB. [2019-12-07 14:22:47,934 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 964.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 163.35 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 88.6 MB). Free memory was 949.0 MB in the beginning and 1.1 GB in the end (delta: -134.4 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.74 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.57 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 140.44 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3477.49 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 62.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -48.5 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * Witness Printer took 29.72 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: 7.9 MB). Peak memory consumption was 7.9 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 12 terminating modules (2 trivial, 5 deterministic, 5 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * i + 27 and consists of 5 locations. One deterministic module has affine ranking function -1 * i + 28 and consists of 3 locations. One deterministic module has affine ranking function -1 * i + 27 and consists of 4 locations. One deterministic module has affine ranking function i and consists of 3 locations. One deterministic module has affine ranking function -2 * i + 55 and consists of 5 locations. One nondeterministic module has affine ranking function -1 * i + 28 and consists of 3 locations. One nondeterministic module has affine ranking function i and consists of 3 locations. One nondeterministic module has affine ranking function -2 * i + 55 and consists of 5 locations. One nondeterministic module has affine ranking function -1 * i + 26 and consists of 6 locations. One nondeterministic module has affine ranking function -2 * i + 51 and consists of 8 locations. 2 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 126 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.4s and 11 iterations. TraceHistogramMax:5. Analysis of lassos took 1.8s. Construction of modules took 0.2s. Büchi inclusion checks took 1.2s. Highest rank in rank-based complementation 5. Minimization of det autom 0. Minimization of nondet autom 12. Automata minimization 0.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 200 StatesRemovedByMinimization, 12 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 126 states and ocurred in iteration 10. Nontrivial modules had stage [2, 3, 2, 1, 2]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 12/33 HoareTripleCheckerStatistics: 173 SDtfs, 246 SDslu, 6 SDs, 0 SdLazy, 346 SolverSat, 88 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT8 conc0 concLT1 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital9 mio100 ax234 hnf100 lsp43 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq191 hnf89 smp100 dnf113 smp97 tf112 neg98 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 13ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 10 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 9]: 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 {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2d43d266=0, \result=0, i=25} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 9]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 Loop: [L9] COND TRUE i > 10 [L10] COND TRUE i == 25 [L11] i = 30 [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...