./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-invgen/nested9.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-invgen/nested9.i -s /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/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 041ac1710be6e1a9f4a6c44510c9851574d3d115 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 18:02:05,383 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 18:02:05,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 18:02:05,393 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 18:02:05,393 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 18:02:05,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 18:02:05,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 18:02:05,396 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 18:02:05,398 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 18:02:05,399 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 18:02:05,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 18:02:05,401 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 18:02:05,401 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:02:05,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:02:05,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:02:05,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:02:05,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:02:05,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:02:05,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:02:05,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:02:05,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:02:05,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:02:05,409 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:02:05,410 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:02:05,412 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:02:05,412 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:02:05,412 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:02:05,412 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:02:05,413 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:02:05,413 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:02:05,413 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:02:05,414 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:02:05,414 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:02:05,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:02:05,415 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:02:05,415 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:02:05,416 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:02:05,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:02:05,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:02:05,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:02:05,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:02:05,418 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-12-07 18:02:05,431 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:02:05,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:02:05,432 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:02:05,432 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:02:05,432 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:02:05,433 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 18:02:05,433 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 18:02:05,433 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 18:02:05,433 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 18:02:05,433 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 18:02:05,434 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 18:02:05,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:02:05,434 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 18:02:05,434 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 18:02:05,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 18:02:05,435 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 18:02:05,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:02:05,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 18:02:05,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 18:02:05,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 18:02:05,436 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 18:02:05,436 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 18:02:05,436 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 18:02:05,436 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:02:05,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 18:02:05,437 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:02:05,437 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:02:05,437 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 18:02:05,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:02:05,437 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 18:02:05,437 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:02:05,438 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 18:02:05,438 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 18:02:05,439 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_34505757-47ad-46a3-b75f-885ffe80512b/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 -> 041ac1710be6e1a9f4a6c44510c9851574d3d115 [2019-12-07 18:02:05,544 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:02:05,551 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:02:05,553 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:02:05,554 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:02:05,554 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:02:05,555 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/../../sv-benchmarks/c/loop-invgen/nested9.i [2019-12-07 18:02:05,596 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/data/817c95e74/290d9c09a1274366adedf3a85661026f/FLAG2d291334b [2019-12-07 18:02:05,893 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:02:05,893 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/sv-benchmarks/c/loop-invgen/nested9.i [2019-12-07 18:02:05,897 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/data/817c95e74/290d9c09a1274366adedf3a85661026f/FLAG2d291334b [2019-12-07 18:02:05,906 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/data/817c95e74/290d9c09a1274366adedf3a85661026f [2019-12-07 18:02:05,908 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:02:05,909 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 18:02:05,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:02:05,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:02:05,912 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:02:05,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:02:05" (1/1) ... [2019-12-07 18:02:05,914 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@455f1f04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:02:05, skipping insertion in model container [2019-12-07 18:02:05,914 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:02:05" (1/1) ... [2019-12-07 18:02:05,919 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:02:05,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:02:06,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:02:06,040 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:02:06,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:02:06,095 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:02:06,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:02:06 WrapperNode [2019-12-07 18:02:06,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:02:06,095 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 18:02:06,096 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 18:02:06,096 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 18:02:06,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:02:06" (1/1) ... [2019-12-07 18:02:06,105 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:02:06" (1/1) ... [2019-12-07 18:02:06,117 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 18:02:06,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:02:06,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:02:06,117 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:02:06,123 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:02:06" (1/1) ... [2019-12-07 18:02:06,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:02:06" (1/1) ... [2019-12-07 18:02:06,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:02:06" (1/1) ... [2019-12-07 18:02:06,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:02:06" (1/1) ... [2019-12-07 18:02:06,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:02:06" (1/1) ... [2019-12-07 18:02:06,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:02:06" (1/1) ... [2019-12-07 18:02:06,130 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:02:06" (1/1) ... [2019-12-07 18:02:06,131 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:02:06,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:02:06,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:02:06,131 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:02:06,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:02:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:06,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:02:06,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:02:06,300 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:02:06,300 INFO L287 CfgBuilder]: Removed 9 assume(true) statements. [2019-12-07 18:02:06,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:02:06 BoogieIcfgContainer [2019-12-07 18:02:06,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:02:06,302 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 18:02:06,302 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 18:02:06,306 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 18:02:06,307 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 18:02:06,307 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 06:02:05" (1/3) ... [2019-12-07 18:02:06,308 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6d9fc625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 06:02:06, skipping insertion in model container [2019-12-07 18:02:06,308 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 18:02:06,308 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:02:06" (2/3) ... [2019-12-07 18:02:06,309 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6d9fc625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 06:02:06, skipping insertion in model container [2019-12-07 18:02:06,309 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 18:02:06,309 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:02:06" (3/3) ... [2019-12-07 18:02:06,310 INFO L371 chiAutomizerObserver]: Analyzing ICFG nested9.i [2019-12-07 18:02:06,343 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 18:02:06,343 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 18:02:06,343 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 18:02:06,343 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:02:06,343 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:02:06,343 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 18:02:06,343 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:02:06,344 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 18:02:06,354 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states. [2019-12-07 18:02:06,369 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-12-07 18:02:06,369 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:02:06,369 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:02:06,374 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:02:06,374 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 18:02:06,374 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 18:02:06,374 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states. [2019-12-07 18:02:06,376 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-12-07 18:02:06,376 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:02:06,376 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:02:06,377 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:02:06,377 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 18:02:06,382 INFO L794 eck$LassoCheckResult]: Stem: 15#ULTIMATE.startENTRYtrue ~__BLAST_NONDET~0 := 0; 14#L-1true havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post6, main_#t~post5, main_#t~post4, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~l~0 := main_#t~nondet3;havoc main_#t~nondet3; 4#L16true assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 5#L17true assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 7#L18true assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 11#L19true assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 8#L19-1true main_~i~0 := 0; 6#L20-3true [2019-12-07 18:02:06,382 INFO L796 eck$LassoCheckResult]: Loop: 6#L20-3true assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 9#L21-3true assume !true; 10#L20-2true main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 6#L20-3true [2019-12-07 18:02:06,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:02:06,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1806907757, now seen corresponding path program 1 times [2019-12-07 18:02:06,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:02:06,392 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928169775] [2019-12-07 18:02:06,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:02:06,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:02:06,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:02:06,471 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:02:06,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:02:06,471 INFO L82 PathProgramCache]: Analyzing trace with hash 62625, now seen corresponding path program 1 times [2019-12-07 18:02:06,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:02:06,472 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350662396] [2019-12-07 18:02:06,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:02:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:02:06,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:02:06,490 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350662396] [2019-12-07 18:02:06,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:02:06,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 18:02:06,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573205357] [2019-12-07 18:02:06,495 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-12-07 18:02:06,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:02:06,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 18:02:06,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 18:02:06,508 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-12-07 18:02:06,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:02:06,513 INFO L93 Difference]: Finished difference Result 19 states and 25 transitions. [2019-12-07 18:02:06,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 18:02:06,514 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 25 transitions. [2019-12-07 18:02:06,515 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-12-07 18:02:06,519 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 14 states and 16 transitions. [2019-12-07 18:02:06,519 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2019-12-07 18:02:06,520 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2019-12-07 18:02:06,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 16 transitions. [2019-12-07 18:02:06,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 18:02:06,520 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-12-07 18:02:06,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 16 transitions. [2019-12-07 18:02:06,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-12-07 18:02:06,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-12-07 18:02:06,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2019-12-07 18:02:06,539 INFO L711 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-12-07 18:02:06,539 INFO L591 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-12-07 18:02:06,539 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 18:02:06,539 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 16 transitions. [2019-12-07 18:02:06,540 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-12-07 18:02:06,540 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:02:06,540 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:02:06,540 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:02:06,541 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 18:02:06,541 INFO L794 eck$LassoCheckResult]: Stem: 58#ULTIMATE.startENTRY ~__BLAST_NONDET~0 := 0; 57#L-1 havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post6, main_#t~post5, main_#t~post4, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~l~0 := main_#t~nondet3;havoc main_#t~nondet3; 46#L16 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 47#L17 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 50#L18 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 51#L19 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 52#L19-1 main_~i~0 := 0; 48#L20-3 [2019-12-07 18:02:06,541 INFO L796 eck$LassoCheckResult]: Loop: 48#L20-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 49#L21-3 assume !(main_~j~0 < 3 * main_~i~0); 53#L20-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 48#L20-3 [2019-12-07 18:02:06,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:02:06,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1806907757, now seen corresponding path program 2 times [2019-12-07 18:02:06,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:02:06,541 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357326600] [2019-12-07 18:02:06,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:02:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:02:06,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:02:06,557 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:02:06,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:02:06,557 INFO L82 PathProgramCache]: Analyzing trace with hash 61788, now seen corresponding path program 1 times [2019-12-07 18:02:06,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:02:06,557 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433693305] [2019-12-07 18:02:06,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:02:06,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:02:06,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:02:06,566 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:02:06,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:02:06,566 INFO L82 PathProgramCache]: Analyzing trace with hash 763900016, now seen corresponding path program 1 times [2019-12-07 18:02:06,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:02:06,566 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251288984] [2019-12-07 18:02:06,566 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:02:06,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:02:06,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:02:06,578 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:02:06,609 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:02:06,609 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:02:06,609 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:02:06,609 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:02:06,609 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 18:02:06,609 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:06,610 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:02:06,610 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:02:06,610 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration2_Loop [2019-12-07 18:02:06,610 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:02:06,610 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:02:06,623 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:06,638 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:06,683 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:02:06,684 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:06,690 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:02:06,690 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:06,698 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 18:02:06,698 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:02:06,867 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 18:02:06,869 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:02:06,869 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:02:06,869 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:02:06,869 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:02:06,869 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 18:02:06,869 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:06,869 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:02:06,869 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:02:06,869 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration2_Loop [2019-12-07 18:02:06,869 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:02:06,870 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:02:06,871 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:06,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:06,906 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:02:06,910 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:06,913 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:02:06,915 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:02:06,915 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:02:06,915 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:02:06,916 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:02:06,916 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:02:06,918 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:02:06,918 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:02:06,921 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 18:02:06,926 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 18:02:06,926 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:06,933 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 18:02:06,933 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 18:02:06,933 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 18:02:06,934 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 1 Supporting invariants [] [2019-12-07 18:02:06,937 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 18:02:06,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:02:06,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:02:06,963 INFO L264 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 18:02:06,964 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:02:06,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:02:06,971 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 18:02:06,971 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:02:06,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:02:06,995 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-12-07 18:02:06,995 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 16 transitions. cyclomatic complexity: 3 Second operand 4 states. [2019-12-07 18:02:07,058 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 16 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 36 states and 46 transitions. Complement of second has 8 states. [2019-12-07 18:02:07,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-12-07 18:02:07,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 18:02:07,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2019-12-07 18:02:07,060 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 7 letters. Loop has 3 letters. [2019-12-07 18:02:07,061 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:02:07,061 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 10 letters. Loop has 3 letters. [2019-12-07 18:02:07,061 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:02:07,061 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 7 letters. Loop has 6 letters. [2019-12-07 18:02:07,061 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:02:07,062 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 46 transitions. [2019-12-07 18:02:07,063 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2019-12-07 18:02:07,064 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 35 states and 44 transitions. [2019-12-07 18:02:07,064 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2019-12-07 18:02:07,064 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2019-12-07 18:02:07,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 44 transitions. [2019-12-07 18:02:07,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 18:02:07,064 INFO L688 BuchiCegarLoop]: Abstraction has 35 states and 44 transitions. [2019-12-07 18:02:07,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 44 transitions. [2019-12-07 18:02:07,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 26. [2019-12-07 18:02:07,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-12-07 18:02:07,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2019-12-07 18:02:07,066 INFO L711 BuchiCegarLoop]: Abstraction has 26 states and 33 transitions. [2019-12-07 18:02:07,066 INFO L591 BuchiCegarLoop]: Abstraction has 26 states and 33 transitions. [2019-12-07 18:02:07,066 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 18:02:07,067 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 33 transitions. [2019-12-07 18:02:07,067 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-12-07 18:02:07,067 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:02:07,067 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:02:07,068 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:02:07,068 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2019-12-07 18:02:07,068 INFO L794 eck$LassoCheckResult]: Stem: 176#ULTIMATE.startENTRY ~__BLAST_NONDET~0 := 0; 175#L-1 havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post6, main_#t~post5, main_#t~post4, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~l~0 := main_#t~nondet3;havoc main_#t~nondet3; 154#L16 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 155#L17 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 160#L18 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 166#L19 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 167#L19-1 main_~i~0 := 0; 168#L20-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 157#L21-3 [2019-12-07 18:02:07,068 INFO L796 eck$LassoCheckResult]: Loop: 157#L21-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 161#L22-2 assume !(main_~k~0 < main_~j~0); 169#L21-2 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 170#L21-3 assume !(main_~j~0 < 3 * main_~i~0); 164#L20-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 156#L20-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 157#L21-3 [2019-12-07 18:02:07,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:02:07,068 INFO L82 PathProgramCache]: Analyzing trace with hash 179565651, now seen corresponding path program 1 times [2019-12-07 18:02:07,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:02:07,069 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741724663] [2019-12-07 18:02:07,069 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:02:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:02:07,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:02:07,078 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:02:07,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:02:07,078 INFO L82 PathProgramCache]: Analyzing trace with hash 2077067147, now seen corresponding path program 1 times [2019-12-07 18:02:07,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:02:07,079 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573120586] [2019-12-07 18:02:07,079 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:02:07,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:02:07,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:02:07,087 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:02:07,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:02:07,087 INFO L82 PathProgramCache]: Analyzing trace with hash -696682915, now seen corresponding path program 1 times [2019-12-07 18:02:07,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:02:07,088 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114640925] [2019-12-07 18:02:07,088 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:02:07,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:02:07,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:02:07,112 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114640925] [2019-12-07 18:02:07,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:02:07,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 18:02:07,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63670015] [2019-12-07 18:02:07,137 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:02:07,137 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:02:07,138 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:02:07,138 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:02:07,138 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 18:02:07,138 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:07,138 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:02:07,138 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:02:07,138 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration3_Loop [2019-12-07 18:02:07,138 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:02:07,138 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:02:07,139 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:07,149 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:07,151 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:07,186 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:02:07,186 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:07,189 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:02:07,189 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:07,196 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 18:02:07,196 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:02:07,468 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 18:02:07,469 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:02:07,469 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:02:07,469 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:02:07,469 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:02:07,469 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 18:02:07,470 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:07,470 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:02:07,470 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:02:07,470 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration3_Loop [2019-12-07 18:02:07,470 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:02:07,470 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:02:07,471 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:07,484 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:07,489 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:07,527 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:02:07,527 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:07,530 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:02:07,531 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:02:07,531 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:02:07,532 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:02:07,532 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:02:07,532 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:02:07,533 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:02:07,533 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:02:07,536 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 18:02:07,540 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-12-07 18:02:07,540 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:07,543 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 18:02:07,544 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 18:02:07,544 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 18:02:07,544 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~j~0) = 7*ULTIMATE.start_main_~i~0 - 4*ULTIMATE.start_main_~j~0 Supporting invariants [] [2019-12-07 18:02:07,545 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 18:02:07,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:02:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:02:07,562 INFO L264 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 18:02:07,562 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:02:07,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:02:07,567 WARN L262 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 18:02:07,567 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:02:19,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:02:19,652 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2019-12-07 18:02:19,652 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 33 transitions. cyclomatic complexity: 9 Second operand 5 states. [2019-12-07 18:03:07,925 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 33 transitions. cyclomatic complexity: 9. Second operand 5 states. Result 74 states and 99 transitions. Complement of second has 9 states. [2019-12-07 18:03:07,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-12-07 18:03:07,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 18:03:07,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2019-12-07 18:03:07,927 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 8 letters. Loop has 6 letters. [2019-12-07 18:03:07,927 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:03:07,927 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 18:03:07,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:03:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:03:07,941 INFO L264 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 18:03:07,941 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:03:07,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:03:07,946 WARN L262 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 18:03:07,946 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:03:07,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:03:07,989 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 4 loop predicates [2019-12-07 18:03:07,989 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 33 transitions. cyclomatic complexity: 9 Second operand 5 states. [2019-12-07 18:04:20,503 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 33 transitions. cyclomatic complexity: 9. Second operand 5 states. Result 112 states and 144 transitions. Complement of second has 13 states. [2019-12-07 18:04:20,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2019-12-07 18:04:20,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 18:04:20,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 35 transitions. [2019-12-07 18:04:20,504 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 35 transitions. Stem has 8 letters. Loop has 6 letters. [2019-12-07 18:04:20,505 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:04:20,505 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 35 transitions. Stem has 14 letters. Loop has 6 letters. [2019-12-07 18:04:20,505 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:04:20,505 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 35 transitions. Stem has 8 letters. Loop has 12 letters. [2019-12-07 18:04:20,506 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:04:20,506 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 112 states and 144 transitions. [2019-12-07 18:04:20,510 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 25 [2019-12-07 18:04:20,511 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 112 states to 96 states and 125 transitions. [2019-12-07 18:04:20,511 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2019-12-07 18:04:20,512 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2019-12-07 18:04:20,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 96 states and 125 transitions. [2019-12-07 18:04:20,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 18:04:20,512 INFO L688 BuchiCegarLoop]: Abstraction has 96 states and 125 transitions. [2019-12-07 18:04:20,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states and 125 transitions. [2019-12-07 18:04:20,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 72. [2019-12-07 18:04:20,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-12-07 18:04:20,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 97 transitions. [2019-12-07 18:04:20,519 INFO L711 BuchiCegarLoop]: Abstraction has 72 states and 97 transitions. [2019-12-07 18:04:20,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:04:20,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 18:04:20,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 18:04:20,519 INFO L87 Difference]: Start difference. First operand 72 states and 97 transitions. Second operand 4 states. [2019-12-07 18:04:20,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:04:20,544 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2019-12-07 18:04:20,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 18:04:20,544 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 35 transitions. [2019-12-07 18:04:20,545 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-12-07 18:04:20,545 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 28 states and 34 transitions. [2019-12-07 18:04:20,545 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2019-12-07 18:04:20,545 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2019-12-07 18:04:20,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 34 transitions. [2019-12-07 18:04:20,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 18:04:20,546 INFO L688 BuchiCegarLoop]: Abstraction has 28 states and 34 transitions. [2019-12-07 18:04:20,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 34 transitions. [2019-12-07 18:04:20,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2019-12-07 18:04:20,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-12-07 18:04:20,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2019-12-07 18:04:20,548 INFO L711 BuchiCegarLoop]: Abstraction has 27 states and 33 transitions. [2019-12-07 18:04:20,548 INFO L591 BuchiCegarLoop]: Abstraction has 27 states and 33 transitions. [2019-12-07 18:04:20,548 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 18:04:20,548 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 33 transitions. [2019-12-07 18:04:20,549 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-12-07 18:04:20,549 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:04:20,549 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:04:20,549 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:04:20,549 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2019-12-07 18:04:20,549 INFO L794 eck$LassoCheckResult]: Stem: 630#ULTIMATE.startENTRY ~__BLAST_NONDET~0 := 0; 629#L-1 havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post6, main_#t~post5, main_#t~post4, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~l~0 := main_#t~nondet3;havoc main_#t~nondet3; 607#L16 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 608#L17 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 609#L18 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 614#L19 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 615#L19-1 main_~i~0 := 0; 610#L20-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 611#L21-3 assume !(main_~j~0 < 3 * main_~i~0); 618#L20-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 633#L20-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 616#L21-3 [2019-12-07 18:04:20,550 INFO L796 eck$LassoCheckResult]: Loop: 616#L21-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 617#L22-2 assume !(main_~k~0 < main_~j~0); 622#L21-2 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 623#L21-3 assume !(main_~j~0 < 3 * main_~i~0); 619#L20-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 620#L20-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 616#L21-3 [2019-12-07 18:04:20,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:20,550 INFO L82 PathProgramCache]: Analyzing trace with hash -2088903248, now seen corresponding path program 2 times [2019-12-07 18:04:20,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:04:20,550 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200680194] [2019-12-07 18:04:20,550 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:04:20,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:04:20,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:04:20,562 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:04:20,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:20,562 INFO L82 PathProgramCache]: Analyzing trace with hash 2077067147, now seen corresponding path program 2 times [2019-12-07 18:04:20,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:04:20,562 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419991912] [2019-12-07 18:04:20,562 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:04:20,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:04:20,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:04:20,568 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:04:20,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:20,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1743510022, now seen corresponding path program 2 times [2019-12-07 18:04:20,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:04:20,569 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539906074] [2019-12-07 18:04:20,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:04:20,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:04:20,597 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:04:20,597 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539906074] [2019-12-07 18:04:20,597 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299008463] [2019-12-07 18:04:20,598 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/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 [2019-12-07 18:04:20,618 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 18:04:20,619 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:04:20,619 INFO L264 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 18:04:20,620 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:04:20,639 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:04:20,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-07 18:04:20,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2019-12-07 18:04:20,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853260443] [2019-12-07 18:04:20,662 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:04:20,662 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:04:20,662 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:04:20,663 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:04:20,663 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 18:04:20,663 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:20,663 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:04:20,663 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:04:20,663 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration4_Loop [2019-12-07 18:04:20,663 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:04:20,663 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:04:20,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:20,665 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:20,667 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:20,719 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:04:20,719 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:20,722 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:04:20,722 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:04:20,725 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:04:20,725 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5=0} Honda state: {ULTIMATE.start_main_#t~post5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:20,729 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:04:20,729 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:04:20,732 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:04:20,732 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post4=0} Honda state: {ULTIMATE.start_main_#t~post4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:20,736 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:04:20,736 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:20,744 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 18:04:20,744 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:04:21,004 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 18:04:21,006 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:04:21,007 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:04:21,007 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:04:21,007 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:04:21,007 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 18:04:21,007 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:21,007 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:04:21,007 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:04:21,007 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration4_Loop [2019-12-07 18:04:21,007 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:04:21,007 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:04:21,008 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:21,009 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:21,010 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:21,052 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:04:21,052 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:21,055 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:04:21,056 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:04:21,056 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:04:21,056 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:04:21,056 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:04:21,056 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:04:21,057 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:04:21,057 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:04:21,058 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:21,062 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:04:21,063 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:04:21,063 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:04:21,063 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:04:21,064 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:04:21,064 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:04:21,064 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:04:21,064 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:04:21,065 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:21,069 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:04:21,070 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:04:21,070 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:04:21,070 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:04:21,070 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:04:21,070 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:04:21,072 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:04:21,072 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:04:21,074 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 18:04:21,079 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-12-07 18:04:21,079 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:21,084 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 18:04:21,085 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 18:04:21,085 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 18:04:21,085 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~j~0) = 5*ULTIMATE.start_main_~n~0 - 4*ULTIMATE.start_main_~j~0 Supporting invariants [] [2019-12-07 18:04:21,086 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 18:04:21,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:04:21,100 INFO L264 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 18:04:21,101 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:04:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:04:21,104 WARN L262 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 18:04:21,105 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:04:21,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:04:21,138 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2019-12-07 18:04:21,138 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 33 transitions. cyclomatic complexity: 8 Second operand 5 states. [2019-12-07 18:04:21,149 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 33 transitions. cyclomatic complexity: 8. Second operand 5 states. Result 31 states and 38 transitions. Complement of second has 5 states. [2019-12-07 18:04:21,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 18:04:21,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 18:04:21,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2019-12-07 18:04:21,150 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 11 letters. Loop has 6 letters. [2019-12-07 18:04:21,150 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:04:21,150 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 18:04:21,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:04:21,161 INFO L264 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 18:04:21,162 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:04:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:04:21,165 WARN L262 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 18:04:21,166 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:04:21,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:04:21,196 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 4 loop predicates [2019-12-07 18:04:21,196 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 33 transitions. cyclomatic complexity: 8 Second operand 5 states. [2019-12-07 18:04:21,206 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 33 transitions. cyclomatic complexity: 8. Second operand 5 states. Result 31 states and 38 transitions. Complement of second has 5 states. [2019-12-07 18:04:21,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 18:04:21,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 18:04:21,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2019-12-07 18:04:21,206 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 11 letters. Loop has 6 letters. [2019-12-07 18:04:21,207 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:04:21,207 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 18:04:21,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:21,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:04:21,218 INFO L264 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 18:04:21,219 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:04:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:04:21,222 WARN L262 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 18:04:21,223 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:04:21,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:04:21,253 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2019-12-07 18:04:21,253 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 33 transitions. cyclomatic complexity: 8 Second operand 5 states. [2019-12-07 18:04:21,384 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 33 transitions. cyclomatic complexity: 8. Second operand 5 states. Result 101 states and 128 transitions. Complement of second has 12 states. [2019-12-07 18:04:21,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2019-12-07 18:04:21,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 18:04:21,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 45 transitions. [2019-12-07 18:04:21,385 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 45 transitions. Stem has 11 letters. Loop has 6 letters. [2019-12-07 18:04:21,385 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:04:21,385 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 45 transitions. Stem has 17 letters. Loop has 6 letters. [2019-12-07 18:04:21,386 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:04:21,386 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 45 transitions. Stem has 11 letters. Loop has 12 letters. [2019-12-07 18:04:21,386 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:04:21,387 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 101 states and 128 transitions. [2019-12-07 18:04:21,388 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 41 [2019-12-07 18:04:21,389 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 101 states to 82 states and 105 transitions. [2019-12-07 18:04:21,389 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2019-12-07 18:04:21,389 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2019-12-07 18:04:21,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 82 states and 105 transitions. [2019-12-07 18:04:21,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 18:04:21,389 INFO L688 BuchiCegarLoop]: Abstraction has 82 states and 105 transitions. [2019-12-07 18:04:21,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states and 105 transitions. [2019-12-07 18:04:21,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 59. [2019-12-07 18:04:21,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-12-07 18:04:21,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 78 transitions. [2019-12-07 18:04:21,393 INFO L711 BuchiCegarLoop]: Abstraction has 59 states and 78 transitions. [2019-12-07 18:04:21,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:04:21,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 18:04:21,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-12-07 18:04:21,394 INFO L87 Difference]: Start difference. First operand 59 states and 78 transitions. Second operand 6 states. [2019-12-07 18:04:21,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:04:21,432 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2019-12-07 18:04:21,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 18:04:21,433 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 60 transitions. [2019-12-07 18:04:21,433 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2019-12-07 18:04:21,434 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 34 states and 40 transitions. [2019-12-07 18:04:21,434 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2019-12-07 18:04:21,434 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2019-12-07 18:04:21,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 40 transitions. [2019-12-07 18:04:21,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 18:04:21,434 INFO L688 BuchiCegarLoop]: Abstraction has 34 states and 40 transitions. [2019-12-07 18:04:21,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 40 transitions. [2019-12-07 18:04:21,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2019-12-07 18:04:21,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-12-07 18:04:21,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2019-12-07 18:04:21,436 INFO L711 BuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2019-12-07 18:04:21,436 INFO L591 BuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2019-12-07 18:04:21,436 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-12-07 18:04:21,436 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states and 35 transitions. [2019-12-07 18:04:21,436 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2019-12-07 18:04:21,436 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:04:21,436 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:04:21,437 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:04:21,437 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:04:21,437 INFO L794 eck$LassoCheckResult]: Stem: 1191#ULTIMATE.startENTRY ~__BLAST_NONDET~0 := 0; 1190#L-1 havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post6, main_#t~post5, main_#t~post4, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~l~0 := main_#t~nondet3;havoc main_#t~nondet3; 1168#L16 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 1169#L17 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 1174#L18 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 1180#L19 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 1181#L19-1 main_~i~0 := 0; 1182#L20-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 1176#L21-3 assume !(main_~j~0 < 3 * main_~i~0); 1177#L20-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1196#L20-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 1171#L21-3 [2019-12-07 18:04:21,437 INFO L796 eck$LassoCheckResult]: Loop: 1171#L21-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 1175#L22-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1187#L4 assume !(0 == __VERIFIER_assert_~cond); 1192#L4-2 main_#t~post6 := main_~k~0;main_~k~0 := 1 + main_#t~post6;havoc main_#t~post6; 1193#L22-2 assume !(main_~k~0 < main_~j~0); 1183#L21-2 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1184#L21-3 assume !(main_~j~0 < 3 * main_~i~0); 1178#L20-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1170#L20-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 1171#L21-3 [2019-12-07 18:04:21,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:21,437 INFO L82 PathProgramCache]: Analyzing trace with hash -2088903248, now seen corresponding path program 3 times [2019-12-07 18:04:21,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:04:21,437 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520681015] [2019-12-07 18:04:21,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:04:21,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:04:21,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:04:21,446 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:04:21,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:21,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1576881701, now seen corresponding path program 1 times [2019-12-07 18:04:21,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:04:21,446 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534340990] [2019-12-07 18:04:21,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:04:21,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:04:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:04:21,457 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:04:21,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:21,457 INFO L82 PathProgramCache]: Analyzing trace with hash -604215978, now seen corresponding path program 1 times [2019-12-07 18:04:21,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:04:21,457 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835285498] [2019-12-07 18:04:21,457 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:04:21,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:04:21,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:04:21,472 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:04:21,550 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:04:21,550 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:04:21,550 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:04:21,550 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:04:21,550 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 18:04:21,550 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:21,551 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:04:21,551 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:04:21,551 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration5_Loop [2019-12-07 18:04:21,551 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:04:21,551 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:04:21,551 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:21,553 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:21,564 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:21,567 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:21,568 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:21,612 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:04:21,613 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:21,615 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:04:21,615 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:04:21,618 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:04:21,618 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6=0} Honda state: {ULTIMATE.start_main_#t~post6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:21,622 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:04:21,622 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:21,629 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 18:04:21,629 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:04:21,902 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 18:04:21,905 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:04:21,905 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:04:21,905 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:04:21,905 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:04:21,905 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 18:04:21,905 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:21,905 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:04:21,905 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:04:21,905 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration5_Loop [2019-12-07 18:04:21,905 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:04:21,905 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:04:21,906 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:21,907 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:21,908 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:21,912 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:21,913 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:21,967 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:04:21,967 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:21,969 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:04:21,970 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:04:21,970 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:04:21,970 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:04:21,971 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:04:21,971 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:04:21,971 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:04:21,971 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:04:21,972 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:21,977 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:04:21,978 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:04:21,978 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:04:21,978 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:04:21,978 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:04:21,978 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:04:21,979 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:04:21,979 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:04:21,980 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:21,984 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:04:21,985 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:04:21,985 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:04:21,985 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:04:21,985 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:04:21,985 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:04:21,986 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:04:21,986 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:04:21,987 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:21,991 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:04:21,992 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:04:21,992 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:04:21,992 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:04:21,992 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:04:21,992 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:04:21,993 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:04:21,993 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:04:21,994 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:21,998 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:04:21,999 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:04:21,999 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:04:21,999 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:04:21,999 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:04:21,999 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:04:22,001 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:04:22,001 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:04:22,003 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 18:04:22,006 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 18:04:22,006 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:22,008 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 18:04:22,008 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 18:04:22,008 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 18:04:22,009 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 3 Supporting invariants [] [2019-12-07 18:04:22,010 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 18:04:22,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:22,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:04:22,022 INFO L264 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 18:04:22,023 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:04:22,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:04:22,027 INFO L264 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 18:04:22,027 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:04:22,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:04:22,077 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 7 loop predicates [2019-12-07 18:04:22,077 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 29 states and 35 transitions. cyclomatic complexity: 8 Second operand 8 states. [2019-12-07 18:04:22,192 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 29 states and 35 transitions. cyclomatic complexity: 8. Second operand 8 states. Result 117 states and 146 transitions. Complement of second has 18 states. [2019-12-07 18:04:22,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 1 stem states 8 non-accepting loop states 1 accepting loop states [2019-12-07 18:04:22,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-12-07 18:04:22,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 40 transitions. [2019-12-07 18:04:22,193 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 11 letters. Loop has 9 letters. [2019-12-07 18:04:22,193 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:04:22,193 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 20 letters. Loop has 9 letters. [2019-12-07 18:04:22,193 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:04:22,193 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 11 letters. Loop has 18 letters. [2019-12-07 18:04:22,193 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:04:22,194 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 117 states and 146 transitions. [2019-12-07 18:04:22,194 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 24 [2019-12-07 18:04:22,195 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 117 states to 115 states and 144 transitions. [2019-12-07 18:04:22,196 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2019-12-07 18:04:22,196 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2019-12-07 18:04:22,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 115 states and 144 transitions. [2019-12-07 18:04:22,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 18:04:22,196 INFO L688 BuchiCegarLoop]: Abstraction has 115 states and 144 transitions. [2019-12-07 18:04:22,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states and 144 transitions. [2019-12-07 18:04:22,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 73. [2019-12-07 18:04:22,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2019-12-07 18:04:22,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 94 transitions. [2019-12-07 18:04:22,200 INFO L711 BuchiCegarLoop]: Abstraction has 73 states and 94 transitions. [2019-12-07 18:04:22,200 INFO L591 BuchiCegarLoop]: Abstraction has 73 states and 94 transitions. [2019-12-07 18:04:22,200 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-12-07 18:04:22,200 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 73 states and 94 transitions. [2019-12-07 18:04:22,200 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2019-12-07 18:04:22,200 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:04:22,200 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:04:22,202 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:04:22,202 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2019-12-07 18:04:22,202 INFO L794 eck$LassoCheckResult]: Stem: 1448#ULTIMATE.startENTRY ~__BLAST_NONDET~0 := 0; 1447#L-1 havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post6, main_#t~post5, main_#t~post4, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~l~0 := main_#t~nondet3;havoc main_#t~nondet3; 1424#L16 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 1425#L17 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 1430#L18 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 1440#L19 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 1431#L19-1 main_~i~0 := 0; 1432#L20-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 1464#L21-3 assume !(main_~j~0 < 3 * main_~i~0); 1477#L20-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1473#L20-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 1427#L21-3 [2019-12-07 18:04:22,202 INFO L796 eck$LassoCheckResult]: Loop: 1427#L21-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 1444#L22-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1445#L4 assume !(0 == __VERIFIER_assert_~cond); 1459#L4-2 main_#t~post6 := main_~k~0;main_~k~0 := 1 + main_#t~post6;havoc main_#t~post6; 1458#L22-2 assume !(main_~k~0 < main_~j~0); 1441#L21-2 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1427#L21-3 [2019-12-07 18:04:22,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:22,202 INFO L82 PathProgramCache]: Analyzing trace with hash -2088903248, now seen corresponding path program 4 times [2019-12-07 18:04:22,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:04:22,202 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931944803] [2019-12-07 18:04:22,202 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:04:22,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:04:22,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:04:22,212 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:04:22,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:22,212 INFO L82 PathProgramCache]: Analyzing trace with hash 2078695422, now seen corresponding path program 1 times [2019-12-07 18:04:22,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:04:22,213 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749473532] [2019-12-07 18:04:22,213 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:04:22,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:04:22,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:04:22,228 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:04:22,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:22,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1741881747, now seen corresponding path program 2 times [2019-12-07 18:04:22,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:04:22,229 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227551845] [2019-12-07 18:04:22,229 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:04:22,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:04:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:04:22,243 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:04:22,291 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:04:22,291 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:04:22,291 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:04:22,291 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:04:22,291 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 18:04:22,291 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:22,291 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:04:22,291 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:04:22,291 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration6_Loop [2019-12-07 18:04:22,292 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:04:22,292 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:04:22,292 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:22,311 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:22,312 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:22,314 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:22,351 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:04:22,351 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:22,354 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:04:22,354 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:22,360 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 18:04:22,361 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:04:22,745 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 18:04:22,748 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:04:22,748 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:04:22,748 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:04:22,748 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:04:22,749 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 18:04:22,749 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:22,749 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:04:22,749 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:04:22,749 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration6_Loop [2019-12-07 18:04:22,749 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:04:22,749 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:04:22,750 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:22,759 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:22,762 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:22,763 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:22,799 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:04:22,799 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:22,802 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:04:22,803 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:04:22,803 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:04:22,804 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:04:22,804 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:04:22,804 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:04:22,805 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:04:22,805 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:04:22,807 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 18:04:22,810 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-12-07 18:04:22,810 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:22,815 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 18:04:22,815 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 18:04:22,816 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 18:04:22,816 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0, ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~j~0 + 5*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-12-07 18:04:22,817 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 18:04:22,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:22,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:04:22,831 INFO L264 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 18:04:22,831 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:04:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:04:22,835 INFO L264 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 18:04:22,836 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:04:22,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:04:22,864 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2019-12-07 18:04:22,864 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 73 states and 94 transitions. cyclomatic complexity: 25 Second operand 5 states. [2019-12-07 18:04:22,870 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 73 states and 94 transitions. cyclomatic complexity: 25. Second operand 5 states. Result 77 states and 98 transitions. Complement of second has 5 states. [2019-12-07 18:04:22,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 18:04:22,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 18:04:22,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-12-07 18:04:22,871 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 11 letters. Loop has 6 letters. [2019-12-07 18:04:22,871 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:04:22,871 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 18:04:22,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:04:22,883 INFO L264 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 18:04:22,883 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:04:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:04:22,887 INFO L264 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 18:04:22,887 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:04:22,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:04:22,913 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 4 loop predicates [2019-12-07 18:04:22,913 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 73 states and 94 transitions. cyclomatic complexity: 25 Second operand 5 states. [2019-12-07 18:04:22,919 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 73 states and 94 transitions. cyclomatic complexity: 25. Second operand 5 states. Result 77 states and 98 transitions. Complement of second has 5 states. [2019-12-07 18:04:22,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 18:04:22,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 18:04:22,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-12-07 18:04:22,920 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 11 letters. Loop has 6 letters. [2019-12-07 18:04:22,920 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:04:22,920 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 18:04:22,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:22,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:04:22,932 INFO L264 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 18:04:22,932 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:04:22,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:04:22,936 INFO L264 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 18:04:22,936 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:04:22,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:04:22,964 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2019-12-07 18:04:22,964 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 73 states and 94 transitions. cyclomatic complexity: 25 Second operand 5 states. [2019-12-07 18:04:23,010 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 73 states and 94 transitions. cyclomatic complexity: 25. Second operand 5 states. Result 156 states and 196 transitions. Complement of second has 10 states. [2019-12-07 18:04:23,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2019-12-07 18:04:23,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 18:04:23,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 34 transitions. [2019-12-07 18:04:23,010 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 11 letters. Loop has 6 letters. [2019-12-07 18:04:23,011 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:04:23,011 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 17 letters. Loop has 6 letters. [2019-12-07 18:04:23,011 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:04:23,011 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 11 letters. Loop has 12 letters. [2019-12-07 18:04:23,011 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:04:23,011 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 156 states and 196 transitions. [2019-12-07 18:04:23,013 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 28 [2019-12-07 18:04:23,014 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 156 states to 142 states and 180 transitions. [2019-12-07 18:04:23,014 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2019-12-07 18:04:23,015 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2019-12-07 18:04:23,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 142 states and 180 transitions. [2019-12-07 18:04:23,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 18:04:23,015 INFO L688 BuchiCegarLoop]: Abstraction has 142 states and 180 transitions. [2019-12-07 18:04:23,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states and 180 transitions. [2019-12-07 18:04:23,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 110. [2019-12-07 18:04:23,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2019-12-07 18:04:23,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 144 transitions. [2019-12-07 18:04:23,021 INFO L711 BuchiCegarLoop]: Abstraction has 110 states and 144 transitions. [2019-12-07 18:04:23,021 INFO L591 BuchiCegarLoop]: Abstraction has 110 states and 144 transitions. [2019-12-07 18:04:23,021 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-12-07 18:04:23,021 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 110 states and 144 transitions. [2019-12-07 18:04:23,022 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2019-12-07 18:04:23,022 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:04:23,022 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:04:23,022 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:04:23,022 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-12-07 18:04:23,023 INFO L794 eck$LassoCheckResult]: Stem: 2033#ULTIMATE.startENTRY ~__BLAST_NONDET~0 := 0; 2032#L-1 havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post6, main_#t~post5, main_#t~post4, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~l~0 := main_#t~nondet3;havoc main_#t~nondet3; 2008#L16 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 2009#L17 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 2010#L18 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 2015#L19 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 2016#L19-1 main_~i~0 := 0; 2011#L20-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 2012#L21-3 assume !(main_~j~0 < 3 * main_~i~0); 2058#L20-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 2059#L20-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 2041#L21-3 [2019-12-07 18:04:23,023 INFO L796 eck$LassoCheckResult]: Loop: 2041#L21-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 2037#L22-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 2039#L4 assume !(0 == __VERIFIER_assert_~cond); 2034#L4-2 main_#t~post6 := main_~k~0;main_~k~0 := 1 + main_#t~post6;havoc main_#t~post6; 2028#L22-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 2029#L4 assume !(0 == __VERIFIER_assert_~cond); 2036#L4-2 main_#t~post6 := main_~k~0;main_~k~0 := 1 + main_#t~post6;havoc main_#t~post6; 2038#L22-2 assume !(main_~k~0 < main_~j~0); 2025#L21-2 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 2026#L21-3 assume !(main_~j~0 < 3 * main_~i~0); 2021#L20-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 2022#L20-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 2041#L21-3 [2019-12-07 18:04:23,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:23,023 INFO L82 PathProgramCache]: Analyzing trace with hash -2088903248, now seen corresponding path program 5 times [2019-12-07 18:04:23,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:04:23,023 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480541677] [2019-12-07 18:04:23,024 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:04:23,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:04:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:04:23,031 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:04:23,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:23,031 INFO L82 PathProgramCache]: Analyzing trace with hash -206190261, now seen corresponding path program 2 times [2019-12-07 18:04:23,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:04:23,031 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515124926] [2019-12-07 18:04:23,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:04:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:04:23,085 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:04:23,085 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515124926] [2019-12-07 18:04:23,085 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971547946] [2019-12-07 18:04:23,085 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:04:23,102 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 18:04:23,102 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:04:23,102 INFO L264 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 18:04:23,103 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:04:23,166 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:04:23,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:04:23,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2019-12-07 18:04:23,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015307527] [2019-12-07 18:04:23,167 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-12-07 18:04:23,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:04:23,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-12-07 18:04:23,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2019-12-07 18:04:23,167 INFO L87 Difference]: Start difference. First operand 110 states and 144 transitions. cyclomatic complexity: 38 Second operand 14 states. [2019-12-07 18:04:23,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:04:23,347 INFO L93 Difference]: Finished difference Result 270 states and 328 transitions. [2019-12-07 18:04:23,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-12-07 18:04:23,347 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 270 states and 328 transitions. [2019-12-07 18:04:23,349 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 63 [2019-12-07 18:04:23,350 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 270 states to 270 states and 328 transitions. [2019-12-07 18:04:23,350 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2019-12-07 18:04:23,350 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2019-12-07 18:04:23,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 270 states and 328 transitions. [2019-12-07 18:04:23,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 18:04:23,351 INFO L688 BuchiCegarLoop]: Abstraction has 270 states and 328 transitions. [2019-12-07 18:04:23,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states and 328 transitions. [2019-12-07 18:04:23,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 166. [2019-12-07 18:04:23,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2019-12-07 18:04:23,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 208 transitions. [2019-12-07 18:04:23,357 INFO L711 BuchiCegarLoop]: Abstraction has 166 states and 208 transitions. [2019-12-07 18:04:23,357 INFO L591 BuchiCegarLoop]: Abstraction has 166 states and 208 transitions. [2019-12-07 18:04:23,357 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-12-07 18:04:23,357 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 166 states and 208 transitions. [2019-12-07 18:04:23,357 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 37 [2019-12-07 18:04:23,357 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:04:23,357 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:04:23,358 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:04:23,358 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2019-12-07 18:04:23,358 INFO L794 eck$LassoCheckResult]: Stem: 2478#ULTIMATE.startENTRY ~__BLAST_NONDET~0 := 0; 2477#L-1 havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post6, main_#t~post5, main_#t~post4, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~l~0 := main_#t~nondet3;havoc main_#t~nondet3; 2452#L16 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 2453#L17 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 2454#L18 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 2459#L19 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 2460#L19-1 main_~i~0 := 0; 2455#L20-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 2456#L21-3 assume !(main_~j~0 < 3 * main_~i~0); 2468#L20-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 2469#L20-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 2494#L21-3 [2019-12-07 18:04:23,358 INFO L796 eck$LassoCheckResult]: Loop: 2494#L21-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 2474#L22-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 2475#L4 assume !(0 == __VERIFIER_assert_~cond); 2479#L4-2 main_#t~post6 := main_~k~0;main_~k~0 := 1 + main_#t~post6;havoc main_#t~post6; 2480#L22-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 2492#L4 assume !(0 == __VERIFIER_assert_~cond); 2491#L4-2 main_#t~post6 := main_~k~0;main_~k~0 := 1 + main_#t~post6;havoc main_#t~post6; 2490#L22-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 2483#L4 assume !(0 == __VERIFIER_assert_~cond); 2484#L4-2 main_#t~post6 := main_~k~0;main_~k~0 := 1 + main_#t~post6;havoc main_#t~post6; 2489#L22-2 assume !(main_~k~0 < main_~j~0); 2488#L21-2 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 2487#L21-3 assume !(main_~j~0 < 3 * main_~i~0); 2466#L20-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 2467#L20-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 2494#L21-3 [2019-12-07 18:04:23,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:23,358 INFO L82 PathProgramCache]: Analyzing trace with hash -2088903248, now seen corresponding path program 6 times [2019-12-07 18:04:23,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:04:23,359 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327057382] [2019-12-07 18:04:23,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:04:23,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:04:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:04:23,364 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:04:23,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:23,364 INFO L82 PathProgramCache]: Analyzing trace with hash 452506725, now seen corresponding path program 3 times [2019-12-07 18:04:23,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:04:23,365 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390636580] [2019-12-07 18:04:23,365 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:04:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:04:23,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:04:23,374 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:04:23,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:23,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1390681386, now seen corresponding path program 3 times [2019-12-07 18:04:23,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:04:23,375 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18765401] [2019-12-07 18:04:23,375 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:04:23,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:04:23,406 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:04:23,406 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18765401] [2019-12-07 18:04:23,406 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359942004] [2019-12-07 18:04:23,406 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:04:23,426 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-12-07 18:04:23,427 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:04:23,427 INFO L264 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 18:04:23,428 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:04:23,468 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:04:23,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:04:23,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2019-12-07 18:04:23,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453849208] [2019-12-07 18:04:23,618 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:04:23,618 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:04:23,619 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:04:23,619 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:04:23,619 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 18:04:23,619 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:23,619 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:04:23,619 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:04:23,619 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration8_Loop [2019-12-07 18:04:23,619 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:04:23,619 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:04:23,620 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:23,621 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:23,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:23,633 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:23,636 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:23,677 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:04:23,678 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:23,680 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:04:23,680 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:04:23,682 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:04:23,683 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6=0} Honda state: {ULTIMATE.start_main_#t~post6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:23,686 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:04:23,686 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:04:23,689 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:04:23,689 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post4=0} Honda state: {ULTIMATE.start_main_#t~post4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:23,693 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:04:23,693 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:23,700 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 18:04:23,700 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:04:23,925 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 18:04:23,927 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:04:23,927 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:04:23,927 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:04:23,927 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:04:23,927 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 18:04:23,927 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:23,927 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:04:23,927 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:04:23,927 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration8_Loop [2019-12-07 18:04:23,927 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:04:23,927 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:04:23,928 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:23,929 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:23,930 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:23,941 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:23,945 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:23,993 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:04:23,993 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:23,996 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:04:23,997 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:04:23,997 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:04:23,997 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:04:23,997 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:04:23,997 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:04:23,998 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:04:23,998 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:04:23,999 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:24,002 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:04:24,003 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:04:24,003 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:04:24,003 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:04:24,004 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:04:24,004 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:04:24,004 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:04:24,004 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:04:24,005 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:24,009 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:04:24,010 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:04:24,010 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:04:24,010 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:04:24,011 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:04:24,011 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:04:24,012 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:04:24,012 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:04:24,014 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 18:04:24,017 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 18:04:24,017 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:24,019 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 18:04:24,019 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 18:04:24,020 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 18:04:24,020 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 5 Supporting invariants [] [2019-12-07 18:04:24,021 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 18:04:24,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:24,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:04:24,034 INFO L264 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 18:04:24,034 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:04:24,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:04:24,041 INFO L264 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 18:04:24,042 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:04:24,109 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:04:24,109 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 9 loop predicates [2019-12-07 18:04:24,109 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 166 states and 208 transitions. cyclomatic complexity: 46 Second operand 10 states. [2019-12-07 18:04:24,357 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 166 states and 208 transitions. cyclomatic complexity: 46. Second operand 10 states. Result 672 states and 840 transitions. Complement of second has 32 states. [2019-12-07 18:04:24,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 17 states 1 stem states 15 non-accepting loop states 1 accepting loop states [2019-12-07 18:04:24,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-12-07 18:04:24,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 62 transitions. [2019-12-07 18:04:24,358 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states and 62 transitions. Stem has 11 letters. Loop has 15 letters. [2019-12-07 18:04:24,358 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:04:24,358 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states and 62 transitions. Stem has 26 letters. Loop has 15 letters. [2019-12-07 18:04:24,358 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:04:24,358 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states and 62 transitions. Stem has 11 letters. Loop has 30 letters. [2019-12-07 18:04:24,358 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:04:24,359 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 672 states and 840 transitions. [2019-12-07 18:04:24,362 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 79 [2019-12-07 18:04:24,364 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 672 states to 504 states and 629 transitions. [2019-12-07 18:04:24,364 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 48 [2019-12-07 18:04:24,365 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 48 [2019-12-07 18:04:24,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 504 states and 629 transitions. [2019-12-07 18:04:24,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 18:04:24,365 INFO L688 BuchiCegarLoop]: Abstraction has 504 states and 629 transitions. [2019-12-07 18:04:24,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states and 629 transitions. [2019-12-07 18:04:24,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 262. [2019-12-07 18:04:24,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2019-12-07 18:04:24,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 333 transitions. [2019-12-07 18:04:24,370 INFO L711 BuchiCegarLoop]: Abstraction has 262 states and 333 transitions. [2019-12-07 18:04:24,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:04:24,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 18:04:24,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2019-12-07 18:04:24,371 INFO L87 Difference]: Start difference. First operand 262 states and 333 transitions. Second operand 12 states. [2019-12-07 18:04:24,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:04:24,457 INFO L93 Difference]: Finished difference Result 338 states and 425 transitions. [2019-12-07 18:04:24,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-07 18:04:24,458 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 338 states and 425 transitions. [2019-12-07 18:04:24,459 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 40 [2019-12-07 18:04:24,461 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 338 states to 282 states and 357 transitions. [2019-12-07 18:04:24,461 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2019-12-07 18:04:24,461 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2019-12-07 18:04:24,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 282 states and 357 transitions. [2019-12-07 18:04:24,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 18:04:24,461 INFO L688 BuchiCegarLoop]: Abstraction has 282 states and 357 transitions. [2019-12-07 18:04:24,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states and 357 transitions. [2019-12-07 18:04:24,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 278. [2019-12-07 18:04:24,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2019-12-07 18:04:24,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 351 transitions. [2019-12-07 18:04:24,465 INFO L711 BuchiCegarLoop]: Abstraction has 278 states and 351 transitions. [2019-12-07 18:04:24,465 INFO L591 BuchiCegarLoop]: Abstraction has 278 states and 351 transitions. [2019-12-07 18:04:24,465 INFO L424 BuchiCegarLoop]: ======== Iteration 9============ [2019-12-07 18:04:24,465 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 278 states and 351 transitions. [2019-12-07 18:04:24,466 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 40 [2019-12-07 18:04:24,466 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:04:24,466 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:04:24,467 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:04:24,467 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 1, 1, 1] [2019-12-07 18:04:24,467 INFO L794 eck$LassoCheckResult]: Stem: 4163#ULTIMATE.startENTRY ~__BLAST_NONDET~0 := 0; 4162#L-1 havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post6, main_#t~post5, main_#t~post4, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~l~0 := main_#t~nondet3;havoc main_#t~nondet3; 4139#L16 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 4140#L17 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 4145#L18 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 4154#L19 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 4155#L19-1 main_~i~0 := 0; 4141#L20-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 4142#L21-3 assume !(main_~j~0 < 3 * main_~i~0); 4219#L20-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 4336#L20-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 4328#L21-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 4326#L22-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 4324#L4 assume !(0 == __VERIFIER_assert_~cond); 4323#L4-2 main_#t~post6 := main_~k~0;main_~k~0 := 1 + main_#t~post6;havoc main_#t~post6; 4220#L22-2 assume !(main_~k~0 < main_~j~0); 4221#L21-2 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 4329#L21-3 assume !(main_~j~0 < 3 * main_~i~0); 4207#L20-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 4208#L20-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 4177#L21-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 4159#L22-2 [2019-12-07 18:04:24,467 INFO L796 eck$LassoCheckResult]: Loop: 4159#L22-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 4160#L4 assume !(0 == __VERIFIER_assert_~cond); 4168#L4-2 main_#t~post6 := main_~k~0;main_~k~0 := 1 + main_#t~post6;havoc main_#t~post6; 4179#L22-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 4180#L4 assume !(0 == __VERIFIER_assert_~cond); 4164#L4-2 main_#t~post6 := main_~k~0;main_~k~0 := 1 + main_#t~post6;havoc main_#t~post6; 4165#L22-2 assume !(main_~k~0 < main_~j~0); 4156#L21-2 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 4157#L21-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 4159#L22-2 [2019-12-07 18:04:24,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:24,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1550826094, now seen corresponding path program 4 times [2019-12-07 18:04:24,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:04:24,468 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140442039] [2019-12-07 18:04:24,468 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:04:24,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:04:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:04:24,477 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:04:24,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:24,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1734754794, now seen corresponding path program 2 times [2019-12-07 18:04:24,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:04:24,477 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613730712] [2019-12-07 18:04:24,477 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:04:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:04:24,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:04:24,483 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:04:24,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:24,484 INFO L82 PathProgramCache]: Analyzing trace with hash 538979237, now seen corresponding path program 5 times [2019-12-07 18:04:24,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:04:24,484 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19905072] [2019-12-07 18:04:24,484 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:04:24,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:04:24,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:04:24,496 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:04:24,575 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:04:24,575 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:04:24,575 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:04:24,575 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:04:24,575 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 18:04:24,575 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:24,575 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:04:24,575 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:04:24,575 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration9_Loop [2019-12-07 18:04:24,575 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:04:24,575 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:04:24,576 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:24,577 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:24,586 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:24,587 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:24,622 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:04:24,622 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:24,625 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:04:24,625 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:04:24,627 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:04:24,627 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6=0} Honda state: {ULTIMATE.start_main_#t~post6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:24,631 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:04:24,631 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:24,637 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 18:04:24,637 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:04:25,065 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 18:04:25,067 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:04:25,067 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:04:25,067 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:04:25,067 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:04:25,067 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 18:04:25,067 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:25,067 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:04:25,067 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:04:25,067 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration9_Loop [2019-12-07 18:04:25,068 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:04:25,068 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:04:25,068 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:25,077 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:25,078 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:25,081 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:25,114 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:04:25,114 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:25,117 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:04:25,118 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:04:25,118 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:04:25,118 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:04:25,118 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:04:25,118 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:04:25,119 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:04:25,119 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:04:25,121 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 18:04:25,123 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 18:04:25,123 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:25,128 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 18:04:25,128 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 18:04:25,128 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 18:04:25,129 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0, ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~j~0 + 3*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-12-07 18:04:25,130 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 18:04:25,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:25,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:04:25,144 INFO L264 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 18:04:25,144 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:04:25,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:04:25,149 INFO L264 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 18:04:25,149 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:04:25,154 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-12-07 18:04:25,154 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 18:04:25,155 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 278 states and 351 transitions. cyclomatic complexity: 82 Second operand 4 states. [2019-12-07 18:04:25,169 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 278 states and 351 transitions. cyclomatic complexity: 82. Second operand 4 states. Result 292 states and 365 transitions. Complement of second has 7 states. [2019-12-07 18:04:25,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 18:04:25,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 18:04:25,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2019-12-07 18:04:25,170 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 21 letters. Loop has 9 letters. [2019-12-07 18:04:25,170 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:04:25,170 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 18:04:25,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:25,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:04:25,183 INFO L264 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 18:04:25,184 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:04:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:04:25,188 INFO L264 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 18:04:25,188 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:04:25,194 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-12-07 18:04:25,194 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 18:04:25,194 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 278 states and 351 transitions. cyclomatic complexity: 82 Second operand 4 states. [2019-12-07 18:04:25,205 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 278 states and 351 transitions. cyclomatic complexity: 82. Second operand 4 states. Result 292 states and 365 transitions. Complement of second has 7 states. [2019-12-07 18:04:25,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 18:04:25,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 18:04:25,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2019-12-07 18:04:25,206 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 21 letters. Loop has 9 letters. [2019-12-07 18:04:25,206 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:04:25,206 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 18:04:25,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:25,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:04:25,221 INFO L264 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 18:04:25,221 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:04:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:04:25,226 INFO L264 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 18:04:25,226 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:04:25,234 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-12-07 18:04:25,235 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 18:04:25,235 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 278 states and 351 transitions. cyclomatic complexity: 82 Second operand 4 states. [2019-12-07 18:04:25,251 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 278 states and 351 transitions. cyclomatic complexity: 82. Second operand 4 states. Result 503 states and 601 transitions. Complement of second has 6 states. [2019-12-07 18:04:25,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 18:04:25,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 18:04:25,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2019-12-07 18:04:25,252 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 21 letters. Loop has 9 letters. [2019-12-07 18:04:25,252 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:04:25,252 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 30 letters. Loop has 9 letters. [2019-12-07 18:04:25,252 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:04:25,252 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 21 letters. Loop has 18 letters. [2019-12-07 18:04:25,252 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:04:25,252 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 503 states and 601 transitions. [2019-12-07 18:04:25,255 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 55 [2019-12-07 18:04:25,256 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 503 states to 383 states and 465 transitions. [2019-12-07 18:04:25,256 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2019-12-07 18:04:25,257 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2019-12-07 18:04:25,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 383 states and 465 transitions. [2019-12-07 18:04:25,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 18:04:25,257 INFO L688 BuchiCegarLoop]: Abstraction has 383 states and 465 transitions. [2019-12-07 18:04:25,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states and 465 transitions. [2019-12-07 18:04:25,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 324. [2019-12-07 18:04:25,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2019-12-07 18:04:25,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 393 transitions. [2019-12-07 18:04:25,261 INFO L711 BuchiCegarLoop]: Abstraction has 324 states and 393 transitions. [2019-12-07 18:04:25,261 INFO L591 BuchiCegarLoop]: Abstraction has 324 states and 393 transitions. [2019-12-07 18:04:25,261 INFO L424 BuchiCegarLoop]: ======== Iteration 10============ [2019-12-07 18:04:25,261 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 324 states and 393 transitions. [2019-12-07 18:04:25,262 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2019-12-07 18:04:25,262 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:04:25,262 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:04:25,262 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:04:25,262 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2019-12-07 18:04:25,263 INFO L794 eck$LassoCheckResult]: Stem: 5843#ULTIMATE.startENTRY ~__BLAST_NONDET~0 := 0; 5842#L-1 havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post6, main_#t~post5, main_#t~post4, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~l~0 := main_#t~nondet3;havoc main_#t~nondet3; 5815#L16 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 5816#L17 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 5821#L18 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 5831#L19 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 5832#L19-1 main_~i~0 := 0; 5817#L20-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 5818#L21-3 assume !(main_~j~0 < 3 * main_~i~0); 5959#L20-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 5900#L20-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 5902#L21-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 5905#L22-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 5899#L4 assume !(0 == __VERIFIER_assert_~cond); 5896#L4-2 main_#t~post6 := main_~k~0;main_~k~0 := 1 + main_#t~post6;havoc main_#t~post6; 5895#L22-2 assume !(main_~k~0 < main_~j~0); 5893#L21-2 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 5890#L21-3 assume !(main_~j~0 < 3 * main_~i~0); 5887#L20-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 5888#L20-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 5857#L21-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 5837#L22-2 [2019-12-07 18:04:25,263 INFO L796 eck$LassoCheckResult]: Loop: 5837#L22-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 5839#L4 assume !(0 == __VERIFIER_assert_~cond); 5844#L4-2 main_#t~post6 := main_~k~0;main_~k~0 := 1 + main_#t~post6;havoc main_#t~post6; 5845#L22-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 5856#L4 assume !(0 == __VERIFIER_assert_~cond); 5855#L4-2 main_#t~post6 := main_~k~0;main_~k~0 := 1 + main_#t~post6;havoc main_#t~post6; 5854#L22-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 5853#L4 assume !(0 == __VERIFIER_assert_~cond); 5852#L4-2 main_#t~post6 := main_~k~0;main_~k~0 := 1 + main_#t~post6;havoc main_#t~post6; 5851#L22-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 5849#L4 assume !(0 == __VERIFIER_assert_~cond); 5850#L4-2 main_#t~post6 := main_~k~0;main_~k~0 := 1 + main_#t~post6;havoc main_#t~post6; 5848#L22-2 assume !(main_~k~0 < main_~j~0); 5833#L21-2 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 5834#L21-3 assume !(main_~j~0 < 3 * main_~i~0); 5827#L20-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 5828#L20-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 5859#L21-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 5837#L22-2 [2019-12-07 18:04:25,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:25,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1550826094, now seen corresponding path program 6 times [2019-12-07 18:04:25,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:04:25,263 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251256776] [2019-12-07 18:04:25,263 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:04:25,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:04:25,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:04:25,271 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:04:25,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:25,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1362433097, now seen corresponding path program 4 times [2019-12-07 18:04:25,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:04:25,271 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670794766] [2019-12-07 18:04:25,271 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:04:25,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:04:25,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:04:25,281 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:04:25,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:25,281 INFO L82 PathProgramCache]: Analyzing trace with hash -130724088, now seen corresponding path program 7 times [2019-12-07 18:04:25,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:04:25,281 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416709488] [2019-12-07 18:04:25,281 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:04:25,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:04:25,328 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 47 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-12-07 18:04:25,328 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416709488] [2019-12-07 18:04:25,328 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652518869] [2019-12-07 18:04:25,328 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:04:25,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:04:25,366 INFO L264 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 18:04:25,367 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:04:25,441 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 41 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-07 18:04:25,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:04:25,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2019-12-07 18:04:25,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158009212] [2019-12-07 18:04:25,635 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:04:25,636 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:04:25,636 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:04:25,636 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:04:25,636 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 18:04:25,636 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:25,636 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:04:25,636 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:04:25,636 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration10_Loop [2019-12-07 18:04:25,636 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:04:25,636 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:04:25,637 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:25,638 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:25,639 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:25,639 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:25,642 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:25,698 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:04:25,699 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:25,701 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:04:25,701 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:04:25,704 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:04:25,704 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6=0} Honda state: {ULTIMATE.start_main_#t~post6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:25,708 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:04:25,708 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:04:25,710 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:04:25,710 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post4=0} Honda state: {ULTIMATE.start_main_#t~post4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:25,713 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:04:25,713 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:04:25,716 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:04:25,716 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5=0} Honda state: {ULTIMATE.start_main_#t~post5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:25,720 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:04:25,720 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:04:25,723 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:04:25,723 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:25,727 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:04:25,727 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:25,734 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 18:04:25,734 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:04:26,125 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 18:04:26,127 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:04:26,128 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:04:26,128 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:04:26,128 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:04:26,128 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 18:04:26,128 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:26,128 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:04:26,128 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:04:26,128 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration10_Loop [2019-12-07 18:04:26,128 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:04:26,128 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:04:26,129 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:26,131 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:26,132 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:26,137 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:26,151 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:26,202 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:04:26,202 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:26,204 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 [2019-12-07 18:04:26,205 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:04:26,206 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:04:26,206 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:04:26,206 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:04:26,206 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:04:26,206 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:04:26,206 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:04:26,207 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:26,211 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:04:26,212 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:04:26,212 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:04:26,212 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:04:26,212 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:04:26,212 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:04:26,213 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:04:26,213 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:04:26,214 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:26,217 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:04:26,219 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:04:26,219 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:04:26,219 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:04:26,219 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:04:26,219 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:04:26,220 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:04:26,220 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:04:26,221 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 57 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 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:26,225 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:04:26,226 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:04:26,226 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:04:26,226 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:04:26,226 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:04:26,226 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:04:26,227 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:04:26,227 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:04:26,230 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 18:04:26,233 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-12-07 18:04:26,233 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 58 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 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:26,236 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 18:04:26,236 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 18:04:26,236 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 18:04:26,236 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~n~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~n~0 Supporting invariants [] [2019-12-07 18:04:26,237 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 18:04:26,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:26,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:04:26,253 INFO L264 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 18:04:26,253 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:04:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:04:26,261 INFO L264 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 18:04:26,262 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:04:26,275 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-12-07 18:04:26,276 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-12-07 18:04:26,276 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 324 states and 393 transitions. cyclomatic complexity: 78 Second operand 5 states. [2019-12-07 18:04:26,301 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 324 states and 393 transitions. cyclomatic complexity: 78. Second operand 5 states. Result 763 states and 938 transitions. Complement of second has 6 states. [2019-12-07 18:04:26,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 18:04:26,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 18:04:26,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 23 transitions. [2019-12-07 18:04:26,301 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 21 letters. Loop has 18 letters. [2019-12-07 18:04:26,301 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:04:26,301 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 39 letters. Loop has 18 letters. [2019-12-07 18:04:26,302 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:04:26,302 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 21 letters. Loop has 36 letters. [2019-12-07 18:04:26,302 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:04:26,302 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 763 states and 938 transitions. [2019-12-07 18:04:26,305 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 18:04:26,307 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 763 states to 496 states and 614 transitions. [2019-12-07 18:04:26,307 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2019-12-07 18:04:26,308 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2019-12-07 18:04:26,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 496 states and 614 transitions. [2019-12-07 18:04:26,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 18:04:26,308 INFO L688 BuchiCegarLoop]: Abstraction has 496 states and 614 transitions. [2019-12-07 18:04:26,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states and 614 transitions. [2019-12-07 18:04:26,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 477. [2019-12-07 18:04:26,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2019-12-07 18:04:26,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 584 transitions. [2019-12-07 18:04:26,316 INFO L711 BuchiCegarLoop]: Abstraction has 477 states and 584 transitions. [2019-12-07 18:04:26,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:04:26,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-12-07 18:04:26,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2019-12-07 18:04:26,317 INFO L87 Difference]: Start difference. First operand 477 states and 584 transitions. Second operand 16 states. [2019-12-07 18:04:26,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:04:26,673 INFO L93 Difference]: Finished difference Result 2171 states and 2570 transitions. [2019-12-07 18:04:26,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-12-07 18:04:26,673 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2171 states and 2570 transitions. [2019-12-07 18:04:26,684 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2019-12-07 18:04:26,694 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2171 states to 1574 states and 1871 transitions. [2019-12-07 18:04:26,694 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2019-12-07 18:04:26,694 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39 [2019-12-07 18:04:26,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1574 states and 1871 transitions. [2019-12-07 18:04:26,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 18:04:26,695 INFO L688 BuchiCegarLoop]: Abstraction has 1574 states and 1871 transitions. [2019-12-07 18:04:26,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states and 1871 transitions. [2019-12-07 18:04:26,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 566. [2019-12-07 18:04:26,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2019-12-07 18:04:26,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 682 transitions. [2019-12-07 18:04:26,707 INFO L711 BuchiCegarLoop]: Abstraction has 566 states and 682 transitions. [2019-12-07 18:04:26,707 INFO L591 BuchiCegarLoop]: Abstraction has 566 states and 682 transitions. [2019-12-07 18:04:26,707 INFO L424 BuchiCegarLoop]: ======== Iteration 11============ [2019-12-07 18:04:26,707 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 566 states and 682 transitions. [2019-12-07 18:04:26,709 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 18:04:26,709 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:04:26,709 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:04:26,709 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:04:26,709 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 18:04:26,710 INFO L794 eck$LassoCheckResult]: Stem: 9877#ULTIMATE.startENTRY ~__BLAST_NONDET~0 := 0; 9876#L-1 havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post6, main_#t~post5, main_#t~post4, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~l~0 := main_#t~nondet3;havoc main_#t~nondet3; 9855#L16 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 9856#L17 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 9861#L18 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 9868#L19 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 9869#L19-1 main_~i~0 := 0; 9857#L20-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 9858#L21-3 assume !(main_~j~0 < 3 * main_~i~0); 9888#L20-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 9883#L20-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 9885#L21-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 9936#L22-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 9935#L4 assume !(0 == __VERIFIER_assert_~cond); 9934#L4-2 main_#t~post6 := main_~k~0;main_~k~0 := 1 + main_#t~post6;havoc main_#t~post6; 9933#L22-2 assume !(main_~k~0 < main_~j~0); 9932#L21-2 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 9931#L21-3 assume !(main_~j~0 < 3 * main_~i~0); 9930#L20-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 9927#L20-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 9924#L21-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 9926#L22-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 10011#L4 assume !(0 == __VERIFIER_assert_~cond); 10010#L4-2 main_#t~post6 := main_~k~0;main_~k~0 := 1 + main_#t~post6;havoc main_#t~post6; 9993#L22-2 assume !(main_~k~0 < main_~j~0); 9992#L21-2 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 9991#L21-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 9988#L22-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 9882#L4 [2019-12-07 18:04:26,710 INFO L796 eck$LassoCheckResult]: Loop: 9882#L4 assume !(0 == __VERIFIER_assert_~cond); 9878#L4-2 main_#t~post6 := main_~k~0;main_~k~0 := 1 + main_#t~post6;havoc main_#t~post6; 9879#L22-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 9882#L4 [2019-12-07 18:04:26,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:26,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1984863707, now seen corresponding path program 8 times [2019-12-07 18:04:26,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:04:26,710 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584829913] [2019-12-07 18:04:26,710 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:04:26,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:04:26,739 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 18:04:26,739 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584829913] [2019-12-07 18:04:26,739 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351484978] [2019-12-07 18:04:26,739 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:04:26,758 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 18:04:26,759 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:04:26,759 INFO L264 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 18:04:26,759 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:04:26,786 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 18:04:26,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:04:26,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2019-12-07 18:04:26,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281419752] [2019-12-07 18:04:26,787 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 18:04:26,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:26,787 INFO L82 PathProgramCache]: Analyzing trace with hash 84523, now seen corresponding path program 1 times [2019-12-07 18:04:26,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:04:26,787 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761010216] [2019-12-07 18:04:26,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:04:26,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:04:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:04:26,790 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:04:26,806 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:04:26,806 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:04:26,806 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:04:26,807 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:04:26,807 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 18:04:26,807 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:26,807 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:04:26,807 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:04:26,807 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration11_Loop [2019-12-07 18:04:26,807 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:04:26,807 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:04:26,808 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:26,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:26,911 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:04:26,911 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:26,913 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:04:26,914 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:04:26,916 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:04:26,916 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6=0} Honda state: {ULTIMATE.start_main_#t~post6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:26,920 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:04:26,920 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:26,928 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 18:04:26,928 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:04:27,726 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 18:04:27,728 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:04:27,728 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:04:27,728 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:04:27,728 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:04:27,729 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 18:04:27,729 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:27,729 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:04:27,729 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:04:27,729 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration11_Loop [2019-12-07 18:04:27,729 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:04:27,729 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:04:27,729 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:27,731 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:27,811 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:04:27,811 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 63 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 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:27,813 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:04:27,814 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:04:27,814 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:04:27,814 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:04:27,815 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:04:27,815 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:04:27,815 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:04:27,815 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:04:27,816 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:27,820 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:04:27,821 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:04:27,821 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:04:27,821 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:04:27,821 INFO L204 nArgumentSynthesizer]: 4 loop disjuncts [2019-12-07 18:04:27,821 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:04:27,825 INFO L401 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2019-12-07 18:04:27,825 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:04:27,831 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 18:04:27,835 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 18:04:27,835 INFO L444 ModelExtractionUtils]: 5 out of 8 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34505757-47ad-46a3-b75f-885ffe80512b/bin/uautomizer/z3 Starting monitored process 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:27,838 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 18:04:27,838 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 18:04:27,838 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 18:04:27,838 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0, ULTIMATE.start_main_~j~0) = -1*ULTIMATE.start_main_~k~0 + 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2019-12-07 18:04:27,839 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 18:04:27,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:27,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:04:27,854 INFO L264 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 18:04:27,855 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:04:27,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:04:27,857 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 18:04:27,858 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:04:27,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:04:27,862 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 18:04:27,862 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 566 states and 682 transitions. cyclomatic complexity: 129 Second operand 4 states. [2019-12-07 18:04:27,877 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 566 states and 682 transitions. cyclomatic complexity: 129. Second operand 4 states. Result 612 states and 732 transitions. Complement of second has 7 states. [2019-12-07 18:04:27,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 18:04:27,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 18:04:27,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2019-12-07 18:04:27,878 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 28 letters. Loop has 3 letters. [2019-12-07 18:04:27,878 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:04:27,879 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 18:04:27,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:27,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:04:27,897 INFO L264 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 18:04:27,897 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:04:27,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:04:27,901 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 18:04:27,901 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:04:27,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:04:27,908 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 18:04:27,908 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 566 states and 682 transitions. cyclomatic complexity: 129 Second operand 4 states. [2019-12-07 18:04:27,922 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 566 states and 682 transitions. cyclomatic complexity: 129. Second operand 4 states. Result 612 states and 732 transitions. Complement of second has 7 states. [2019-12-07 18:04:27,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 18:04:27,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 18:04:27,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2019-12-07 18:04:27,923 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 28 letters. Loop has 3 letters. [2019-12-07 18:04:27,923 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:04:27,923 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 18:04:27,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:27,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:04:27,939 INFO L264 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 18:04:27,940 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:04:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:04:27,943 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 18:04:27,943 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:04:27,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:04:27,948 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 18:04:27,948 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 566 states and 682 transitions. cyclomatic complexity: 129 Second operand 4 states. [2019-12-07 18:04:27,971 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 566 states and 682 transitions. cyclomatic complexity: 129. Second operand 4 states. Result 929 states and 1074 transitions. Complement of second has 6 states. [2019-12-07 18:04:27,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 18:04:27,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 18:04:27,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 24 transitions. [2019-12-07 18:04:27,972 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 28 letters. Loop has 3 letters. [2019-12-07 18:04:27,972 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:04:27,972 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 31 letters. Loop has 3 letters. [2019-12-07 18:04:27,972 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:04:27,972 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 28 letters. Loop has 6 letters. [2019-12-07 18:04:27,972 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:04:27,973 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 929 states and 1074 transitions. [2019-12-07 18:04:27,977 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 18:04:27,977 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 929 states to 0 states and 0 transitions. [2019-12-07 18:04:27,978 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 18:04:27,978 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 18:04:27,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 18:04:27,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 18:04:27,978 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:04:27,978 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:04:27,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:04:27,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-12-07 18:04:27,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-12-07 18:04:27,979 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 11 states. [2019-12-07 18:04:27,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:04:27,979 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-12-07 18:04:27,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 18:04:27,979 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-12-07 18:04:27,979 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 18:04:27,979 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 18:04:27,979 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 18:04:27,979 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 18:04:27,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 18:04:27,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 18:04:27,980 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:04:27,980 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:04:27,980 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:04:27,980 INFO L424 BuchiCegarLoop]: ======== Iteration 12============ [2019-12-07 18:04:27,980 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 18:04:27,980 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 18:04:27,980 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 18:04:27,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 06:04:27 BoogieIcfgContainer [2019-12-07 18:04:27,986 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 18:04:27,987 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 18:04:27,987 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 18:04:27,987 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 18:04:27,987 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:02:06" (3/4) ... [2019-12-07 18:04:27,990 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 18:04:27,990 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 18:04:27,992 INFO L168 Benchmark]: Toolchain (without parser) took 142082.56 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.9 MB). Free memory was 939.2 MB in the beginning and 996.0 MB in the end (delta: -56.8 MB). Peak memory consumption was 39.1 MB. Max. memory is 11.5 GB. [2019-12-07 18:04:27,992 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:04:27,993 INFO L168 Benchmark]: CACSL2BoogieTranslator took 185.94 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 76.0 MB). Free memory was 939.2 MB in the beginning and 1.1 GB in the end (delta: -131.6 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-12-07 18:04:27,993 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.68 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:04:27,993 INFO L168 Benchmark]: Boogie Preprocessor took 13.49 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-12-07 18:04:27,993 INFO L168 Benchmark]: RCFGBuilder took 170.87 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 11.5 GB. [2019-12-07 18:04:27,994 INFO L168 Benchmark]: BuchiAutomizer took 141683.95 ms. Allocated memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.9 MB). Free memory was 1.1 GB in the beginning and 996.0 MB in the end (delta: 55.5 MB). Peak memory consumption was 75.4 MB. Max. memory is 11.5 GB. [2019-12-07 18:04:27,994 INFO L168 Benchmark]: Witness Printer took 3.58 ms. Allocated memory is still 1.1 GB. Free memory is still 996.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:04:27,996 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 185.94 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 76.0 MB). Free memory was 939.2 MB in the beginning and 1.1 GB in the end (delta: -131.6 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 21.68 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.49 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 170.87 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 141683.95 ms. Allocated memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.9 MB). Free memory was 1.1 GB in the beginning and 996.0 MB in the end (delta: 55.5 MB). Peak memory consumption was 75.4 MB. Max. memory is 11.5 GB. * Witness Printer took 3.58 ms. Allocated memory is still 1.1 GB. Free memory is still 996.0 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 16 terminating modules (7 trivial, 5 deterministic, 4 nondeterministic). One deterministic module has affine ranking function -2 * i + 1 and consists of 5 locations. One deterministic module has affine ranking function 7 * i + -4 * j and consists of 7 locations. One deterministic module has affine ranking function -2 * i + 3 and consists of 10 locations. One deterministic module has affine ranking function -2 * i + 5 and consists of 17 locations. One deterministic module has affine ranking function -1 * i + n and consists of 4 locations. One nondeterministic module has affine ranking function 5 * n + -4 * j and consists of 7 locations. One nondeterministic module has affine ranking function -2 * j + 5 * i and consists of 6 locations. One nondeterministic module has affine ranking function -1 * j + 3 * i and consists of 4 locations. One nondeterministic module has affine ranking function -1 * k + j and consists of 4 locations. 7 modules have a trivial ranking function, the largest among these consists of 16 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 141.6s and 12 iterations. TraceHistogramMax:4. Analysis of lassos took 6.2s. Construction of modules took 96.8s. Büchi inclusion checks took 38.2s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 13. Automata minimization 0.0s AutomataMinimizationTime, 14 MinimizatonAttempts, 1572 StatesRemovedByMinimization, 13 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 566 states and ocurred in iteration 10. Nontrivial modules had stage [4, 1, 4, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 30/46 HoareTripleCheckerStatistics: 307 SDtfs, 524 SDslu, 247 SDs, 0 SdLazy, 1004 SolverSat, 203 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 96.8s Time LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT4 conc0 concLT4 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital38 mio100 ax100 hnf98 lsp92 ukn100 mio100 lsp100 div100 bol100 ite104 ukn100 eq144 hnf94 smp100 dnf117 smp100 tf104 neg99 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 20ms VariablesStem: 0 VariablesLoop: 8 DisjunctsStem: 1 DisjunctsLoop: 4 SupportingInvariants: 0 MotzkinApplications: 8 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 11 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 9 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 3.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...