./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-lit/gr2006.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f01f48b6-8850-45da-b455-3a8566655039/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_f01f48b6-8850-45da-b455-3a8566655039/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f01f48b6-8850-45da-b455-3a8566655039/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f01f48b6-8850-45da-b455-3a8566655039/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-lit/gr2006.i -s /tmp/vcloud-vcloud-master/worker/run_dir_f01f48b6-8850-45da-b455-3a8566655039/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f01f48b6-8850-45da-b455-3a8566655039/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 32bit --witnessprinter.graph.data.programhash 76260ed82768318ee6f3ac3cb9cfff5a60080963 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 21:09:11,363 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 21:09:11,365 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 21:09:11,375 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 21:09:11,375 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 21:09:11,376 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 21:09:11,377 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 21:09:11,379 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 21:09:11,381 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 21:09:11,382 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 21:09:11,383 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 21:09:11,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 21:09:11,384 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 21:09:11,385 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 21:09:11,385 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 21:09:11,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 21:09:11,387 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 21:09:11,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 21:09:11,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 21:09:11,391 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 21:09:11,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 21:09:11,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 21:09:11,394 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 21:09:11,395 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 21:09:11,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 21:09:11,397 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 21:09:11,397 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 21:09:11,398 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 21:09:11,398 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 21:09:11,399 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 21:09:11,399 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 21:09:11,400 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 21:09:11,400 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 21:09:11,401 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 21:09:11,402 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 21:09:11,402 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 21:09:11,403 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 21:09:11,403 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 21:09:11,403 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 21:09:11,404 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 21:09:11,404 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 21:09:11,405 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f01f48b6-8850-45da-b455-3a8566655039/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-15 21:09:11,423 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 21:09:11,424 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 21:09:11,425 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 21:09:11,425 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 21:09:11,425 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 21:09:11,425 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-15 21:09:11,426 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-15 21:09:11,426 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-15 21:09:11,426 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-15 21:09:11,426 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-15 21:09:11,426 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-15 21:09:11,427 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 21:09:11,427 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 21:09:11,427 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 21:09:11,427 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 21:09:11,428 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 21:09:11,428 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 21:09:11,428 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-15 21:09:11,428 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-15 21:09:11,428 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-15 21:09:11,429 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 21:09:11,429 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 21:09:11,429 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-15 21:09:11,429 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 21:09:11,429 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-15 21:09:11,430 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 21:09:11,430 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 21:09:11,430 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-15 21:09:11,430 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 21:09:11,431 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 21:09:11,431 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-15 21:09:11,432 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-15 21:09:11,432 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_f01f48b6-8850-45da-b455-3a8566655039/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 76260ed82768318ee6f3ac3cb9cfff5a60080963 [2019-11-15 21:09:11,489 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 21:09:11,498 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 21:09:11,501 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 21:09:11,502 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 21:09:11,502 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 21:09:11,503 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f01f48b6-8850-45da-b455-3a8566655039/bin/uautomizer/../../sv-benchmarks/c/loop-lit/gr2006.i [2019-11-15 21:09:11,559 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f01f48b6-8850-45da-b455-3a8566655039/bin/uautomizer/data/a219e031f/8af99d78f47a4bfba5ff08ba68e0aa8c/FLAG78da1a18a [2019-11-15 21:09:11,921 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 21:09:11,921 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f01f48b6-8850-45da-b455-3a8566655039/sv-benchmarks/c/loop-lit/gr2006.i [2019-11-15 21:09:11,926 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f01f48b6-8850-45da-b455-3a8566655039/bin/uautomizer/data/a219e031f/8af99d78f47a4bfba5ff08ba68e0aa8c/FLAG78da1a18a [2019-11-15 21:09:12,354 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f01f48b6-8850-45da-b455-3a8566655039/bin/uautomizer/data/a219e031f/8af99d78f47a4bfba5ff08ba68e0aa8c [2019-11-15 21:09:12,357 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 21:09:12,359 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 21:09:12,362 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 21:09:12,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 21:09:12,365 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 21:09:12,366 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:09:12" (1/1) ... [2019-11-15 21:09:12,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c05a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:09:12, skipping insertion in model container [2019-11-15 21:09:12,368 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:09:12" (1/1) ... [2019-11-15 21:09:12,373 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 21:09:12,390 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 21:09:12,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:09:12,662 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 21:09:12,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:09:12,694 INFO L192 MainTranslator]: Completed translation [2019-11-15 21:09:12,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:09:12 WrapperNode [2019-11-15 21:09:12,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 21:09:12,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 21:09:12,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 21:09:12,698 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 21:09:12,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:09:12" (1/1) ... [2019-11-15 21:09:12,711 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:09:12" (1/1) ... [2019-11-15 21:09:12,726 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 21:09:12,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 21:09:12,727 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 21:09:12,727 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 21:09:12,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:09:12" (1/1) ... [2019-11-15 21:09:12,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:09:12" (1/1) ... [2019-11-15 21:09:12,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:09:12" (1/1) ... [2019-11-15 21:09:12,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:09:12" (1/1) ... [2019-11-15 21:09:12,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:09:12" (1/1) ... [2019-11-15 21:09:12,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:09:12" (1/1) ... [2019-11-15 21:09:12,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:09:12" (1/1) ... [2019-11-15 21:09:12,744 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 21:09:12,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 21:09:12,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 21:09:12,745 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 21:09:12,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:09:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f01f48b6-8850-45da-b455-3a8566655039/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:09:12,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 21:09:12,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 21:09:12,997 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 21:09:12,997 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-15 21:09:12,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:09:12 BoogieIcfgContainer [2019-11-15 21:09:12,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 21:09:12,999 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-15 21:09:12,999 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-15 21:09:13,002 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-15 21:09:13,003 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 21:09:13,003 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.11 09:09:12" (1/3) ... [2019-11-15 21:09:13,004 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@72ecec73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 09:09:13, skipping insertion in model container [2019-11-15 21:09:13,004 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 21:09:13,005 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:09:12" (2/3) ... [2019-11-15 21:09:13,006 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@72ecec73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 09:09:13, skipping insertion in model container [2019-11-15 21:09:13,006 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 21:09:13,006 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:09:12" (3/3) ... [2019-11-15 21:09:13,008 INFO L371 chiAutomizerObserver]: Analyzing ICFG gr2006.i [2019-11-15 21:09:13,059 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-15 21:09:13,059 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-15 21:09:13,060 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-15 21:09:13,060 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 21:09:13,060 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 21:09:13,060 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-15 21:09:13,060 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 21:09:13,060 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-15 21:09:13,077 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2019-11-15 21:09:13,093 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 21:09:13,093 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 21:09:13,094 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 21:09:13,099 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-15 21:09:13,100 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-15 21:09:13,100 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-15 21:09:13,100 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2019-11-15 21:09:13,101 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 21:09:13,101 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 21:09:13,101 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 21:09:13,102 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-15 21:09:13,102 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-15 21:09:13,112 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~post1, main_#t~post2, main_#t~post3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := 0;main_~y~0 := 0; 7#L14-2true [2019-11-15 21:09:13,113 INFO L793 eck$LassoCheckResult]: Loop: 7#L14-2true assume !false; 3#L15true assume main_~x~0 < 50;main_#t~post1 := main_~y~0;main_~y~0 := 1 + main_#t~post1;havoc main_#t~post1; 10#L15-2true assume !(main_~y~0 < 0);main_#t~post3 := main_~x~0;main_~x~0 := 1 + main_#t~post3;havoc main_#t~post3; 7#L14-2true [2019-11-15 21:09:13,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:09:13,118 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-15 21:09:13,123 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:09:13,124 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160574518] [2019-11-15 21:09:13,124 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:09:13,124 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:09:13,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:09:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:09:13,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:09:13,189 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:09:13,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:09:13,190 INFO L82 PathProgramCache]: Analyzing trace with hash 39825, now seen corresponding path program 1 times [2019-11-15 21:09:13,190 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:09:13,190 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119705225] [2019-11-15 21:09:13,190 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:09:13,191 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:09:13,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:09:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:09:13,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:09:13,204 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:09:13,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:09:13,205 INFO L82 PathProgramCache]: Analyzing trace with hash 963346, now seen corresponding path program 1 times [2019-11-15 21:09:13,205 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:09:13,205 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947732068] [2019-11-15 21:09:13,205 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:09:13,205 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:09:13,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:09:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:09:13,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:09:13,217 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:09:13,270 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 21:09:13,271 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 21:09:13,271 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 21:09:13,271 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 21:09:13,271 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 21:09:13,271 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:09:13,271 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 21:09:13,272 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 21:09:13,272 INFO L131 ssoRankerPreferences]: Filename of dumped script: gr2006.i_Iteration1_Loop [2019-11-15 21:09:13,272 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 21:09:13,272 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 21:09:13,291 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:09:13,308 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:09:13,317 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:09:13,321 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:09:13,416 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 21:09:13,417 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f01f48b6-8850-45da-b455-3a8566655039/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 [2019-11-15 21:09:13,427 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 21:09:13,428 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f01f48b6-8850-45da-b455-3a8566655039/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 [2019-11-15 21:09:13,440 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 21:09:13,440 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 21:09:13,453 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 21:09:13,455 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 21:09:13,455 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 21:09:13,455 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 21:09:13,455 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 21:09:13,455 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 21:09:13,456 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:09:13,456 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 21:09:13,456 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 21:09:13,456 INFO L131 ssoRankerPreferences]: Filename of dumped script: gr2006.i_Iteration1_Loop [2019-11-15 21:09:13,456 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 21:09:13,456 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 21:09:13,458 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:09:13,470 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:09:13,504 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:09:13,509 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:09:13,590 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 21:09:13,594 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 21:09:13,595 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 21:09:13,596 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 21:09:13,596 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 21:09:13,597 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 21:09:13,597 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 21:09:13,597 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 21:09:13,598 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 21:09:13,599 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 21:09:13,606 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 21:09:13,613 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 21:09:13,613 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-11-15 21:09:13,615 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 21:09:13,615 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 21:09:13,619 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 21:09:13,619 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 99 Supporting invariants [] [2019-11-15 21:09:13,623 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 21:09:13,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:09:13,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:09:13,662 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 21:09:13,663 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:09:13,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:09:13,673 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 21:09:13,674 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:09:13,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:09:13,708 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-15 21:09:13,709 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states. Second operand 4 states. [2019-11-15 21:09:13,767 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states.. Second operand 4 states. Result 47 states and 59 transitions. Complement of second has 7 states. [2019-11-15 21:09:13,768 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 [2019-11-15 21:09:13,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-15 21:09:13,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 34 transitions. [2019-11-15 21:09:13,771 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 34 transitions. Stem has 1 letters. Loop has 3 letters. [2019-11-15 21:09:13,772 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 21:09:13,772 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 34 transitions. Stem has 4 letters. Loop has 3 letters. [2019-11-15 21:09:13,773 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 21:09:13,773 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 34 transitions. Stem has 1 letters. Loop has 6 letters. [2019-11-15 21:09:13,773 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 21:09:13,774 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47 states and 59 transitions. [2019-11-15 21:09:13,778 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 21:09:13,781 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 47 states to 11 states and 14 transitions. [2019-11-15 21:09:13,782 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-15 21:09:13,782 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-11-15 21:09:13,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2019-11-15 21:09:13,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 21:09:13,783 INFO L688 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2019-11-15 21:09:13,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2019-11-15 21:09:13,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2019-11-15 21:09:13,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-15 21:09:13,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2019-11-15 21:09:13,808 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-11-15 21:09:13,808 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-11-15 21:09:13,808 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-15 21:09:13,808 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2019-11-15 21:09:13,809 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 21:09:13,809 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 21:09:13,809 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 21:09:13,809 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-15 21:09:13,809 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-15 21:09:13,810 INFO L791 eck$LassoCheckResult]: Stem: 102#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~post1, main_#t~post2, main_#t~post3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := 0;main_~y~0 := 0; 103#L14-2 assume !false; 97#L15 [2019-11-15 21:09:13,810 INFO L793 eck$LassoCheckResult]: Loop: 97#L15 assume !(main_~x~0 < 50);main_#t~post2 := main_~y~0;main_~y~0 := main_#t~post2 - 1;havoc main_#t~post2; 98#L15-2 assume !(main_~y~0 < 0);main_#t~post3 := main_~x~0;main_~x~0 := 1 + main_#t~post3;havoc main_#t~post3; 104#L14-2 assume !false; 97#L15 [2019-11-15 21:09:13,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:09:13,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-11-15 21:09:13,811 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:09:13,811 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428519244] [2019-11-15 21:09:13,811 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:09:13,811 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:09:13,811 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:09:13,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:09:13,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:09:13,816 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:09:13,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:09:13,817 INFO L82 PathProgramCache]: Analyzing trace with hash 44867, now seen corresponding path program 1 times [2019-11-15 21:09:13,817 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:09:13,817 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333663000] [2019-11-15 21:09:13,817 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:09:13,817 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:09:13,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:09:13,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:09:13,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:09:13,825 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:09:13,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:09:13,827 INFO L82 PathProgramCache]: Analyzing trace with hash 29865658, now seen corresponding path program 1 times [2019-11-15 21:09:13,827 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:09:13,827 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730636020] [2019-11-15 21:09:13,827 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:09:13,827 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:09:13,828 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:09:13,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:09:13,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:09:13,864 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730636020] [2019-11-15 21:09:13,865 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:09:13,865 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 21:09:13,865 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471188719] [2019-11-15 21:09:13,895 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 21:09:13,895 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 21:09:13,895 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 21:09:13,895 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 21:09:13,895 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 21:09:13,895 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:09:13,896 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 21:09:13,896 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 21:09:13,896 INFO L131 ssoRankerPreferences]: Filename of dumped script: gr2006.i_Iteration2_Loop [2019-11-15 21:09:13,896 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 21:09:13,896 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 21:09:13,897 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:09:13,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:09:13,912 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:09:13,915 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:09:13,959 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 21:09:13,959 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f01f48b6-8850-45da-b455-3a8566655039/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 [2019-11-15 21:09:13,967 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 21:09:13,967 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 21:09:13,973 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 21:09:13,973 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post3=0} Honda state: {ULTIMATE.start_main_#t~post3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f01f48b6-8850-45da-b455-3a8566655039/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 [2019-11-15 21:09:13,987 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 21:09:13,987 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f01f48b6-8850-45da-b455-3a8566655039/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 [2019-11-15 21:09:14,020 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 21:09:14,020 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 21:09:14,031 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 21:09:14,031 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=50} Honda state: {ULTIMATE.start_main_~x~0=50} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0=1}, {ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~x~0=0}] Lambdas: [1, 0, 0] Nus: [1, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f01f48b6-8850-45da-b455-3a8566655039/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 [2019-11-15 21:09:14,039 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 21:09:14,039 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 21:09:14,042 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 21:09:14,042 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post2=0} Honda state: {ULTIMATE.start_main_#t~post2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f01f48b6-8850-45da-b455-3a8566655039/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 21:09:14,071 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 21:09:14,071 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f01f48b6-8850-45da-b455-3a8566655039/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:09:14,081 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 21:09:14,081 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 21:09:14,114 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 21:09:14,115 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 21:09:14,116 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 21:09:14,116 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 21:09:14,116 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 21:09:14,116 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 21:09:14,116 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:09:14,116 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 21:09:14,116 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 21:09:14,116 INFO L131 ssoRankerPreferences]: Filename of dumped script: gr2006.i_Iteration2_Loop [2019-11-15 21:09:14,117 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 21:09:14,117 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 21:09:14,119 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:09:14,124 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:09:14,131 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:09:14,133 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:09:14,184 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 21:09:14,184 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 21:09:14,185 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 21:09:14,185 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 21:09:14,185 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 21:09:14,186 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 21:09:14,186 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 21:09:14,186 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 21:09:14,186 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 21:09:14,186 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 21:09:14,188 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 21:09:14,188 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 21:09:14,188 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 21:09:14,189 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 21:09:14,189 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 21:09:14,189 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 21:09:14,189 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 21:09:14,190 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 21:09:14,190 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 21:09:14,203 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 21:09:14,204 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 21:09:14,205 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 21:09:14,205 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 21:09:14,205 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 21:09:14,205 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 21:09:14,205 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 21:09:14,206 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 21:09:14,206 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 21:09:14,207 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 21:09:14,207 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 21:09:14,208 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 21:09:14,208 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 21:09:14,208 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 21:09:14,208 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 21:09:14,208 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 21:09:14,209 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 21:09:14,209 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 21:09:14,222 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 21:09:14,225 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 21:09:14,225 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 21:09:14,225 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 21:09:14,225 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 21:09:14,226 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 21:09:14,226 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-15 21:09:14,226 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 21:09:14,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:09:14,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:09:14,252 INFO L256 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 21:09:14,252 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:09:14,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:09:14,258 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 21:09:14,258 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:09:14,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:09:14,287 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-15 21:09:14,287 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 4 states. [2019-11-15 21:09:14,311 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 23 states and 29 transitions. Complement of second has 7 states. [2019-11-15 21:09:14,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-15 21:09:14,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-15 21:09:14,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2019-11-15 21:09:14,315 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 2 letters. Loop has 3 letters. [2019-11-15 21:09:14,315 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 21:09:14,315 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 5 letters. Loop has 3 letters. [2019-11-15 21:09:14,315 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 21:09:14,315 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 2 letters. Loop has 6 letters. [2019-11-15 21:09:14,316 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 21:09:14,316 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 29 transitions. [2019-11-15 21:09:14,317 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 21:09:14,318 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 15 states and 19 transitions. [2019-11-15 21:09:14,318 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-15 21:09:14,318 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-11-15 21:09:14,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 19 transitions. [2019-11-15 21:09:14,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 21:09:14,318 INFO L688 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2019-11-15 21:09:14,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 19 transitions. [2019-11-15 21:09:14,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-15 21:09:14,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-15 21:09:14,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2019-11-15 21:09:14,320 INFO L711 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2019-11-15 21:09:14,320 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:09:14,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 21:09:14,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 21:09:14,327 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand 3 states. [2019-11-15 21:09:14,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:09:14,337 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2019-11-15 21:09:14,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 21:09:14,337 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2019-11-15 21:09:14,338 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 21:09:14,338 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 14 transitions. [2019-11-15 21:09:14,339 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-15 21:09:14,339 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-11-15 21:09:14,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 14 transitions. [2019-11-15 21:09:14,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 21:09:14,339 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2019-11-15 21:09:14,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 14 transitions. [2019-11-15 21:09:14,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2019-11-15 21:09:14,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-15 21:09:14,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2019-11-15 21:09:14,341 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-11-15 21:09:14,341 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-11-15 21:09:14,341 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-15 21:09:14,341 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 13 transitions. [2019-11-15 21:09:14,342 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 21:09:14,342 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 21:09:14,342 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 21:09:14,344 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2019-11-15 21:09:14,344 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-15 21:09:14,345 INFO L791 eck$LassoCheckResult]: Stem: 202#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~post1, main_#t~post2, main_#t~post3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := 0;main_~y~0 := 0; 203#L14-2 assume !false; 200#L15 assume main_~x~0 < 50;main_#t~post1 := main_~y~0;main_~y~0 := 1 + main_#t~post1;havoc main_#t~post1; 201#L15-2 assume !(main_~y~0 < 0);main_#t~post3 := main_~x~0;main_~x~0 := 1 + main_#t~post3;havoc main_#t~post3; 208#L14-2 assume !false; 198#L15 [2019-11-15 21:09:14,345 INFO L793 eck$LassoCheckResult]: Loop: 198#L15 assume !(main_~x~0 < 50);main_#t~post2 := main_~y~0;main_~y~0 := main_#t~post2 - 1;havoc main_#t~post2; 199#L15-2 assume !(main_~y~0 < 0);main_#t~post3 := main_~x~0;main_~x~0 := 1 + main_#t~post3;havoc main_#t~post3; 206#L14-2 assume !false; 198#L15 [2019-11-15 21:09:14,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:09:14,345 INFO L82 PathProgramCache]: Analyzing trace with hash 29863736, now seen corresponding path program 2 times [2019-11-15 21:09:14,345 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:09:14,345 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65121747] [2019-11-15 21:09:14,346 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:09:14,346 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:09:14,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:09:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:09:14,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:09:14,362 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:09:14,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:09:14,363 INFO L82 PathProgramCache]: Analyzing trace with hash 44867, now seen corresponding path program 2 times [2019-11-15 21:09:14,363 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:09:14,363 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069795396] [2019-11-15 21:09:14,363 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:09:14,363 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:09:14,363 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:09:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:09:14,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:09:14,369 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:09:14,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:09:14,370 INFO L82 PathProgramCache]: Analyzing trace with hash 612343980, now seen corresponding path program 1 times [2019-11-15 21:09:14,370 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:09:14,370 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934726958] [2019-11-15 21:09:14,370 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:09:14,386 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:09:14,387 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:09:14,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:09:14,410 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:09:14,411 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934726958] [2019-11-15 21:09:14,411 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080640653] [2019-11-15 21:09:14,411 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f01f48b6-8850-45da-b455-3a8566655039/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:09:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:09:14,461 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-15 21:09:14,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:09:14,464 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:09:14,465 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:09:14,465 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-11-15 21:09:14,465 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481593498] [2019-11-15 21:09:14,493 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 21:09:14,493 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 21:09:14,493 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 21:09:14,493 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 21:09:14,493 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 21:09:14,493 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:09:14,493 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 21:09:14,494 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 21:09:14,494 INFO L131 ssoRankerPreferences]: Filename of dumped script: gr2006.i_Iteration3_Loop [2019-11-15 21:09:14,494 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 21:09:14,494 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 21:09:14,496 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:09:14,499 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:09:14,510 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:09:14,512 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:09:14,555 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 21:09:14,555 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f01f48b6-8850-45da-b455-3a8566655039/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) [2019-11-15 21:09:14,573 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 21:09:14,573 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:09:14,577 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 21:09:14,577 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post2=0} Honda state: {ULTIMATE.start_main_#t~post2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f01f48b6-8850-45da-b455-3a8566655039/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 21:09:14,592 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 21:09:14,592 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f01f48b6-8850-45da-b455-3a8566655039/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) [2019-11-15 21:09:14,610 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 21:09:14,610 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:09:14,647 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 21:09:14,649 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 21:09:14,649 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 21:09:14,649 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 21:09:14,650 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 21:09:14,650 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 21:09:14,650 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:09:14,650 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 21:09:14,650 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 21:09:14,650 INFO L131 ssoRankerPreferences]: Filename of dumped script: gr2006.i_Iteration3_Loop [2019-11-15 21:09:14,650 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 21:09:14,650 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 21:09:14,651 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:09:14,662 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:09:14,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:09:14,667 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:09:14,706 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 21:09:14,707 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 21:09:14,707 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 21:09:14,708 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 21:09:14,708 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 21:09:14,708 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 21:09:14,708 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 21:09:14,709 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 21:09:14,709 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 21:09:14,709 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 21:09:14,715 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 21:09:14,720 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 21:09:14,720 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 21:09:14,721 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 21:09:14,721 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 21:09:14,721 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 21:09:14,721 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-15 21:09:14,722 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 21:09:14,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:09:14,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:09:14,753 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 21:09:14,754 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:09:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:09:14,762 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 21:09:14,763 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:09:14,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:09:14,783 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-15 21:09:14,784 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand 4 states. [2019-11-15 21:09:14,789 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4. Second operand 4 states. Result 11 states and 13 transitions. Complement of second has 3 states. [2019-11-15 21:09:14,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2019-11-15 21:09:14,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-15 21:09:14,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2019-11-15 21:09:14,794 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 5 letters. Loop has 3 letters. [2019-11-15 21:09:14,794 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 21:09:14,794 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-15 21:09:14,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:09:14,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:09:14,815 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 21:09:14,816 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:09:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:09:14,821 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 21:09:14,822 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:09:14,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:09:14,854 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-15 21:09:14,854 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand 4 states. [2019-11-15 21:09:14,859 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4. Second operand 4 states. Result 11 states and 13 transitions. Complement of second has 3 states. [2019-11-15 21:09:14,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2019-11-15 21:09:14,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-15 21:09:14,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2019-11-15 21:09:14,862 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 5 letters. Loop has 3 letters. [2019-11-15 21:09:14,862 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 21:09:14,862 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-15 21:09:14,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:09:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:09:14,883 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 21:09:14,883 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:09:14,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:09:14,890 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 21:09:14,891 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:09:14,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:09:14,915 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-15 21:09:14,915 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand 4 states. [2019-11-15 21:09:14,941 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4. Second operand 4 states. Result 18 states and 22 transitions. Complement of second has 6 states. [2019-11-15 21:09:14,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-15 21:09:14,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-15 21:09:14,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2019-11-15 21:09:14,943 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 5 letters. Loop has 3 letters. [2019-11-15 21:09:14,943 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 21:09:14,943 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 8 letters. Loop has 3 letters. [2019-11-15 21:09:14,944 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 21:09:14,944 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 5 letters. Loop has 6 letters. [2019-11-15 21:09:14,944 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 21:09:14,944 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 22 transitions. [2019-11-15 21:09:14,945 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 21:09:14,945 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 0 states and 0 transitions. [2019-11-15 21:09:14,946 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-15 21:09:14,946 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-15 21:09:14,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-15 21:09:14,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 21:09:14,946 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 21:09:14,946 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 21:09:14,946 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:09:14,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 21:09:14,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-15 21:09:14,947 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 4 states. [2019-11-15 21:09:14,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:09:14,947 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-11-15 21:09:14,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 21:09:14,948 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-11-15 21:09:14,948 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 21:09:14,948 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 21:09:14,948 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-15 21:09:14,948 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-15 21:09:14,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-15 21:09:14,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 21:09:14,949 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 21:09:14,949 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 21:09:14,949 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 21:09:14,949 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-15 21:09:14,949 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-15 21:09:14,949 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 21:09:14,949 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-15 21:09:14,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.11 09:09:14 BoogieIcfgContainer [2019-11-15 21:09:14,957 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-15 21:09:14,958 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 21:09:14,958 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 21:09:14,958 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 21:09:14,958 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:09:12" (3/4) ... [2019-11-15 21:09:14,961 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 21:09:14,961 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 21:09:14,963 INFO L168 Benchmark]: Toolchain (without parser) took 2603.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 950.1 MB in the beginning and 904.6 MB in the end (delta: 45.5 MB). Peak memory consumption was 199.6 MB. Max. memory is 11.5 GB. [2019-11-15 21:09:14,964 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:09:14,965 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -195.2 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-11-15 21:09:14,965 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.41 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:09:14,965 INFO L168 Benchmark]: Boogie Preprocessor took 17.42 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:09:14,966 INFO L168 Benchmark]: RCFGBuilder took 253.82 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: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 11.5 GB. [2019-11-15 21:09:14,966 INFO L168 Benchmark]: BuchiAutomizer took 1958.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 904.6 MB in the end (delta: 225.8 MB). Peak memory consumption was 225.8 MB. Max. memory is 11.5 GB. [2019-11-15 21:09:14,967 INFO L168 Benchmark]: Witness Printer took 3.82 ms. Allocated memory is still 1.2 GB. Free memory is still 904.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:09:14,969 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 335.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -195.2 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.41 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.42 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 253.82 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: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1958.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 904.6 MB in the end (delta: 225.8 MB). Peak memory consumption was 225.8 MB. Max. memory is 11.5 GB. * Witness Printer took 3.82 ms. Allocated memory is still 1.2 GB. Free memory is still 904.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -2 * x + 99 and consists of 5 locations. One deterministic module has affine ranking function y and consists of 4 locations. One nondeterministic module has affine ranking function y and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.9s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 1.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 11 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 24 SDtfs, 27 SDslu, 19 SDs, 0 SdLazy, 35 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax100 hnf91 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 21ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...