./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 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-invgen/nested9.i -s /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/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 0.1.24-678e011 [2019-11-20 03:59:03,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 03:59:03,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 03:59:03,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 03:59:03,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 03:59:03,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 03:59:03,681 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 03:59:03,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 03:59:03,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 03:59:03,698 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 03:59:03,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 03:59:03,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 03:59:03,700 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 03:59:03,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 03:59:03,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 03:59:03,702 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 03:59:03,703 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 03:59:03,704 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 03:59:03,705 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 03:59:03,707 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 03:59:03,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 03:59:03,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 03:59:03,715 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 03:59:03,716 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 03:59:03,720 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 03:59:03,720 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 03:59:03,721 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 03:59:03,723 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 03:59:03,723 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 03:59:03,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 03:59:03,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 03:59:03,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 03:59:03,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 03:59:03,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 03:59:03,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 03:59:03,729 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 03:59:03,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 03:59:03,730 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 03:59:03,730 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 03:59:03,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 03:59:03,733 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 03:59:03,733 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-20 03:59:03,761 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 03:59:03,761 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 03:59:03,762 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 03:59:03,763 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 03:59:03,763 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 03:59:03,763 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-20 03:59:03,763 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-20 03:59:03,763 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-20 03:59:03,763 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-20 03:59:03,764 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-20 03:59:03,764 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-20 03:59:03,764 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 03:59:03,764 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 03:59:03,764 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 03:59:03,764 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 03:59:03,765 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 03:59:03,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 03:59:03,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-20 03:59:03,765 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-20 03:59:03,765 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-20 03:59:03,766 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 03:59:03,766 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 03:59:03,766 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-20 03:59:03,766 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 03:59:03,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-20 03:59:03,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 03:59:03,767 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 03:59:03,767 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-20 03:59:03,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 03:59:03,767 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 03:59:03,767 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-20 03:59:03,768 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-20 03:59:03,768 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_7fe1bb11-16e1-4555-8732-67f48652d1e9/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 [2019-11-20 03:59:03,904 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 03:59:03,914 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 03:59:03,917 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 03:59:03,918 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 03:59:03,918 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 03:59:03,919 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/bin/uautomizer/../../sv-benchmarks/c/loop-invgen/nested9.i [2019-11-20 03:59:03,971 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/bin/uautomizer/data/aa14200c3/87faea113a084a1c93184eb9e73f06ba/FLAGea9b627bd [2019-11-20 03:59:04,343 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 03:59:04,344 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/sv-benchmarks/c/loop-invgen/nested9.i [2019-11-20 03:59:04,348 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/bin/uautomizer/data/aa14200c3/87faea113a084a1c93184eb9e73f06ba/FLAGea9b627bd [2019-11-20 03:59:04,359 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/bin/uautomizer/data/aa14200c3/87faea113a084a1c93184eb9e73f06ba [2019-11-20 03:59:04,361 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 03:59:04,363 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 03:59:04,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 03:59:04,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 03:59:04,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 03:59:04,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 03:59:04" (1/1) ... [2019-11-20 03:59:04,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d510fa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:59:04, skipping insertion in model container [2019-11-20 03:59:04,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 03:59:04" (1/1) ... [2019-11-20 03:59:04,386 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 03:59:04,400 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 03:59:04,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 03:59:04,543 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 03:59:04,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 03:59:04,652 INFO L192 MainTranslator]: Completed translation [2019-11-20 03:59:04,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:59:04 WrapperNode [2019-11-20 03:59:04,653 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 03:59:04,654 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 03:59:04,654 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 03:59:04,654 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 03:59:04,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:59:04" (1/1) ... [2019-11-20 03:59:04,665 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:59:04" (1/1) ... [2019-11-20 03:59:04,683 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 03:59:04,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 03:59:04,683 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 03:59:04,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 03:59:04,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:59:04" (1/1) ... [2019-11-20 03:59:04,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:59:04" (1/1) ... [2019-11-20 03:59:04,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:59:04" (1/1) ... [2019-11-20 03:59:04,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:59:04" (1/1) ... [2019-11-20 03:59:04,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:59:04" (1/1) ... [2019-11-20 03:59:04,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:59:04" (1/1) ... [2019-11-20 03:59:04,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:59:04" (1/1) ... [2019-11-20 03:59:04,702 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 03:59:04,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 03:59:04,703 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 03:59:04,703 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 03:59:04,703 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:59:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:59:04,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 03:59:04,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 03:59:05,072 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 03:59:05,072 INFO L285 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-20 03:59:05,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:59:05 BoogieIcfgContainer [2019-11-20 03:59:05,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 03:59:05,074 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-20 03:59:05,074 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-20 03:59:05,078 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-20 03:59:05,079 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 03:59:05,079 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 03:59:04" (1/3) ... [2019-11-20 03:59:05,080 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@65a0ba72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 03:59:05, skipping insertion in model container [2019-11-20 03:59:05,080 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 03:59:05,080 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:59:04" (2/3) ... [2019-11-20 03:59:05,081 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@65a0ba72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 03:59:05, skipping insertion in model container [2019-11-20 03:59:05,081 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 03:59:05,081 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:59:05" (3/3) ... [2019-11-20 03:59:05,082 INFO L371 chiAutomizerObserver]: Analyzing ICFG nested9.i [2019-11-20 03:59:05,126 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-20 03:59:05,127 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-20 03:59:05,127 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-20 03:59:05,127 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 03:59:05,127 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 03:59:05,128 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-20 03:59:05,128 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 03:59:05,128 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-20 03:59:05,141 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states. [2019-11-20 03:59:05,160 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-11-20 03:59:05,161 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 03:59:05,161 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 03:59:05,167 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:59:05,167 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 03:59:05,167 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-20 03:59:05,168 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states. [2019-11-20 03:59:05,169 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-11-20 03:59:05,170 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 03:59:05,170 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 03:59:05,170 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:59:05,170 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 03:59:05,178 INFO L794 eck$LassoCheckResult]: Stem: 15#ULTIMATE.startENTRYtrue ~__BLAST_NONDET~0 := 0; 14#L-1true havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post6, main_#t~post5, main_#t~post4, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~l~0 := main_#t~nondet3;havoc main_#t~nondet3; 4#L16true assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 5#L17true assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 7#L18true assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 11#L19true assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 8#L19-1true main_~i~0 := 0; 6#L20-3true [2019-11-20 03:59:05,178 INFO L796 eck$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 [2019-11-20 03:59:05,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:59:05,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1806907757, now seen corresponding path program 1 times [2019-11-20 03:59:05,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:59:05,193 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653073692] [2019-11-20 03:59:05,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:59:05,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:59:05,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:59:05,297 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:59:05,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:59:05,298 INFO L82 PathProgramCache]: Analyzing trace with hash 62625, now seen corresponding path program 1 times [2019-11-20 03:59:05,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:59:05,299 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227123905] [2019-11-20 03:59:05,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:59:05,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:59:05,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:59:05,323 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227123905] [2019-11-20 03:59:05,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 03:59:05,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 03:59:05,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3634866] [2019-11-20 03:59:05,330 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-20 03:59:05,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 03:59:05,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 03:59:05,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 03:59:05,347 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-11-20 03:59:05,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:59:05,353 INFO L93 Difference]: Finished difference Result 19 states and 25 transitions. [2019-11-20 03:59:05,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 03:59:05,355 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 25 transitions. [2019-11-20 03:59:05,356 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-20 03:59:05,360 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 14 states and 16 transitions. [2019-11-20 03:59:05,361 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2019-11-20 03:59:05,361 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2019-11-20 03:59:05,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 16 transitions. [2019-11-20 03:59:05,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 03:59:05,362 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-11-20 03:59:05,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 16 transitions. [2019-11-20 03:59:05,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-20 03:59:05,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-20 03:59:05,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2019-11-20 03:59:05,388 INFO L711 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-11-20 03:59:05,388 INFO L591 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-11-20 03:59:05,388 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-20 03:59:05,388 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 16 transitions. [2019-11-20 03:59:05,389 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-20 03:59:05,389 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 03:59:05,389 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 03:59:05,390 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:59:05,390 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 03:59:05,390 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 [2019-11-20 03:59:05,390 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 [2019-11-20 03:59:05,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:59:05,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1806907757, now seen corresponding path program 2 times [2019-11-20 03:59:05,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:59:05,391 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035332805] [2019-11-20 03:59:05,391 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:59:05,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:59:05,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:59:05,406 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:59:05,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:59:05,406 INFO L82 PathProgramCache]: Analyzing trace with hash 61788, now seen corresponding path program 1 times [2019-11-20 03:59:05,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:59:05,407 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373239888] [2019-11-20 03:59:05,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:59:05,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:59:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:59:05,416 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:59:05,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:59:05,416 INFO L82 PathProgramCache]: Analyzing trace with hash 763900016, now seen corresponding path program 1 times [2019-11-20 03:59:05,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:59:05,417 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376503170] [2019-11-20 03:59:05,417 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:59:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:59:05,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:59:05,433 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:59:05,488 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 03:59:05,488 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 03:59:05,489 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 03:59:05,489 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 03:59:05,489 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 03:59:05,489 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:59:05,489 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 03:59:05,489 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 03:59:05,490 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration2_Loop [2019-11-20 03:59:05,490 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 03:59:05,490 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 03:59:05,509 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:59:05,532 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:59:05,596 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 03:59:05,597 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:59:05,604 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 03:59:05,604 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:59:05,621 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 03:59:05,621 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 03:59:05,806 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 03:59:05,808 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 03:59:05,808 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 03:59:05,808 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 03:59:05,808 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 03:59:05,808 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 03:59:05,808 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:59:05,808 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 03:59:05,808 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 03:59:05,808 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration2_Loop [2019-11-20 03:59:05,808 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 03:59:05,809 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 03:59:05,810 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:59:05,833 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:59:06,006 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2019-11-20 03:59:06,009 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 03:59:06,016 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:59:06,022 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:59:06,024 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:59:06,024 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:59:06,025 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:59:06,025 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:59:06,026 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:59:06,038 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:59:06,039 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:59:06,047 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 03:59:06,057 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 03:59:06,057 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_7fe1bb11-16e1-4555-8732-67f48652d1e9/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:59:06,067 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 03:59:06,067 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 03:59:06,068 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 03:59:06,068 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 1 Supporting invariants [] [2019-11-20 03:59:06,072 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 03:59:06,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:59:06,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:59:06,133 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 03:59:06,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:59:06,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:59:06,145 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 03:59:06,146 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:59:06,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:59:06,188 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-20 03:59:06,189 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 16 transitions. cyclomatic complexity: 3 Second operand 4 states. [2019-11-20 03:59:06,296 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. [2019-11-20 03:59:06,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-11-20 03:59:06,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 03:59:06,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2019-11-20 03:59:06,298 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 7 letters. Loop has 3 letters. [2019-11-20 03:59:06,299 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:59:06,299 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 10 letters. Loop has 3 letters. [2019-11-20 03:59:06,299 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:59:06,299 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 7 letters. Loop has 6 letters. [2019-11-20 03:59:06,299 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:59:06,300 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 46 transitions. [2019-11-20 03:59:06,301 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2019-11-20 03:59:06,302 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 35 states and 44 transitions. [2019-11-20 03:59:06,302 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2019-11-20 03:59:06,303 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2019-11-20 03:59:06,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 44 transitions. [2019-11-20 03:59:06,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 03:59:06,303 INFO L688 BuchiCegarLoop]: Abstraction has 35 states and 44 transitions. [2019-11-20 03:59:06,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 44 transitions. [2019-11-20 03:59:06,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 26. [2019-11-20 03:59:06,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-20 03:59:06,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2019-11-20 03:59:06,306 INFO L711 BuchiCegarLoop]: Abstraction has 26 states and 33 transitions. [2019-11-20 03:59:06,306 INFO L591 BuchiCegarLoop]: Abstraction has 26 states and 33 transitions. [2019-11-20 03:59:06,306 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-20 03:59:06,307 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 33 transitions. [2019-11-20 03:59:06,313 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-11-20 03:59:06,314 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 03:59:06,314 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 03:59:06,314 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:59:06,315 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2019-11-20 03:59:06,315 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 [2019-11-20 03:59:06,315 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 [2019-11-20 03:59:06,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:59:06,316 INFO L82 PathProgramCache]: Analyzing trace with hash 179565651, now seen corresponding path program 1 times [2019-11-20 03:59:06,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:59:06,316 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383606386] [2019-11-20 03:59:06,317 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:59:06,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:59:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:59:06,341 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:59:06,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:59:06,343 INFO L82 PathProgramCache]: Analyzing trace with hash 2077067147, now seen corresponding path program 1 times [2019-11-20 03:59:06,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:59:06,344 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342124511] [2019-11-20 03:59:06,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:59:06,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:59:06,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:59:06,365 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:59:06,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:59:06,369 INFO L82 PathProgramCache]: Analyzing trace with hash -696682915, now seen corresponding path program 1 times [2019-11-20 03:59:06,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:59:06,370 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487119825] [2019-11-20 03:59:06,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:59:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:59:06,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:59:06,418 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487119825] [2019-11-20 03:59:06,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 03:59:06,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 03:59:06,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475945793] [2019-11-20 03:59:06,466 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 03:59:06,467 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 03:59:06,467 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 03:59:06,467 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 03:59:06,467 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 03:59:06,467 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:59:06,467 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 03:59:06,467 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 03:59:06,467 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration3_Loop [2019-11-20 03:59:06,468 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 03:59:06,468 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 03:59:06,469 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:59:06,487 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:59:06,490 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:59:06,552 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 03:59:06,552 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:59:06,564 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 03:59:06,565 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:59:06,586 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 03:59:06,586 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:59:06,906 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 03:59:06,908 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 03:59:06,909 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 03:59:06,909 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 03:59:06,909 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 03:59:06,909 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 03:59:06,909 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:59:06,909 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 03:59:06,909 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 03:59:06,909 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration3_Loop [2019-11-20 03:59:06,910 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 03:59:06,910 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 03:59:06,911 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:59:06,933 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:59:06,938 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:59:07,012 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 03:59:07,013 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:59:07,025 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:59:07,028 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:59:07,028 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:59:07,028 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:59:07,028 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:59:07,029 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:59:07,031 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:59:07,031 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:59:07,035 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 03:59:07,041 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-20 03:59:07,041 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_7fe1bb11-16e1-4555-8732-67f48652d1e9/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:59:07,045 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 03:59:07,045 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 03:59:07,045 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 03:59:07,045 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 [] [2019-11-20 03:59:07,047 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 03:59:07,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:59:07,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:59:07,083 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 03:59:07,084 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:59:07,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:59:07,095 WARN L253 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 03:59:07,096 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:59:31,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:59:31,227 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2019-11-20 03:59:31,227 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 33 transitions. cyclomatic complexity: 9 Second operand 5 states. [2019-11-20 04:00:08,788 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. [2019-11-20 04:00:08,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-11-20 04:00:08,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-20 04:00:08,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2019-11-20 04:00:08,789 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 8 letters. Loop has 6 letters. [2019-11-20 04:00:08,790 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:00:08,790 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 04:00:08,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:00:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:00:08,809 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:00:08,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:00:08,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:00:08,823 WARN L253 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 04:00:08,823 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:00:09,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:00:09,148 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 [2019-11-20 04:00:09,148 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 33 transitions. cyclomatic complexity: 9 Second operand 5 states. [2019-11-20 04:02:10,818 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. [2019-11-20 04:02:10,819 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 [2019-11-20 04:02:10,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-20 04:02:10,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 35 transitions. [2019-11-20 04:02:10,820 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 35 transitions. Stem has 8 letters. Loop has 6 letters. [2019-11-20 04:02:10,820 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:02:10,820 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 35 transitions. Stem has 14 letters. Loop has 6 letters. [2019-11-20 04:02:10,820 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:02:10,820 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 35 transitions. Stem has 8 letters. Loop has 12 letters. [2019-11-20 04:02:10,821 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:02:10,821 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 112 states and 144 transitions. [2019-11-20 04:02:10,824 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 25 [2019-11-20 04:02:10,825 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 112 states to 96 states and 125 transitions. [2019-11-20 04:02:10,825 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2019-11-20 04:02:10,826 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2019-11-20 04:02:10,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 96 states and 125 transitions. [2019-11-20 04:02:10,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 04:02:10,827 INFO L688 BuchiCegarLoop]: Abstraction has 96 states and 125 transitions. [2019-11-20 04:02:10,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states and 125 transitions. [2019-11-20 04:02:10,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 72. [2019-11-20 04:02:10,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-11-20 04:02:10,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 97 transitions. [2019-11-20 04:02:10,835 INFO L711 BuchiCegarLoop]: Abstraction has 72 states and 97 transitions. [2019-11-20 04:02:10,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:02:10,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 04:02:10,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 04:02:10,836 INFO L87 Difference]: Start difference. First operand 72 states and 97 transitions. Second operand 4 states. [2019-11-20 04:02:10,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:02:10,866 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2019-11-20 04:02:10,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 04:02:10,866 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 35 transitions. [2019-11-20 04:02:10,867 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-11-20 04:02:10,868 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 28 states and 34 transitions. [2019-11-20 04:02:10,868 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2019-11-20 04:02:10,868 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2019-11-20 04:02:10,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 34 transitions. [2019-11-20 04:02:10,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 04:02:10,869 INFO L688 BuchiCegarLoop]: Abstraction has 28 states and 34 transitions. [2019-11-20 04:02:10,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 34 transitions. [2019-11-20 04:02:10,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2019-11-20 04:02:10,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-20 04:02:10,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2019-11-20 04:02:10,874 INFO L711 BuchiCegarLoop]: Abstraction has 27 states and 33 transitions. [2019-11-20 04:02:10,874 INFO L591 BuchiCegarLoop]: Abstraction has 27 states and 33 transitions. [2019-11-20 04:02:10,874 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-20 04:02:10,874 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 33 transitions. [2019-11-20 04:02:10,875 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-11-20 04:02:10,875 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:02:10,876 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:02:10,876 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:02:10,876 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2019-11-20 04:02:10,877 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 [2019-11-20 04:02:10,877 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 [2019-11-20 04:02:10,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:02:10,877 INFO L82 PathProgramCache]: Analyzing trace with hash -2088903248, now seen corresponding path program 2 times [2019-11-20 04:02:10,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:02:10,878 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484643638] [2019-11-20 04:02:10,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:02:10,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:02:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:02:10,893 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:02:10,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:02:10,893 INFO L82 PathProgramCache]: Analyzing trace with hash 2077067147, now seen corresponding path program 2 times [2019-11-20 04:02:10,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:02:10,894 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401867836] [2019-11-20 04:02:10,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:02:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:02:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:02:10,903 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:02:10,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:02:10,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1743510022, now seen corresponding path program 2 times [2019-11-20 04:02:10,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:02:10,904 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535955851] [2019-11-20 04:02:10,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:02:10,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:02:10,956 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:02:10,956 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535955851] [2019-11-20 04:02:10,956 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814964036] [2019-11-20 04:02:10,956 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 04:02:10,988 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 04:02:10,988 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 04:02:10,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 04:02:10,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:02:11,026 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:02:11,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-20 04:02:11,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2019-11-20 04:02:11,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813933403] [2019-11-20 04:02:11,076 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:02:11,077 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:02:11,077 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:02:11,077 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:02:11,077 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 04:02:11,077 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:02:11,077 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:02:11,077 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:02:11,077 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration4_Loop [2019-11-20 04:02:11,077 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:02:11,077 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:02:11,078 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:11,081 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:11,085 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Exception during sending of exit command (exit): Broken pipe [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Exception during sending of exit command (exit): Broken pipe [2019-11-20 04:02:11,185 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:02:11,185 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:02:11,205 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:02:11,205 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:02:11,209 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:02:11,209 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_7fe1bb11-16e1-4555-8732-67f48652d1e9/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 [2019-11-20 04:02:11,217 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:02:11,217 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:02:11,220 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:02:11,221 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_7fe1bb11-16e1-4555-8732-67f48652d1e9/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:02:11,226 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:02:11,226 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:02:11,246 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 04:02:11,246 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:02:11,631 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 04:02:11,634 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:02:11,634 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:02:11,634 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:02:11,634 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:02:11,634 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 04:02:11,634 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:02:11,634 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:02:11,635 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:02:11,635 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration4_Loop [2019-11-20 04:02:11,635 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:02:11,635 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:02:11,636 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:11,648 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:11,650 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:11,723 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:02:11,723 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/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 [2019-11-20 04:02:11,729 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:02:11,730 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:02:11,731 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:02:11,731 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:02:11,731 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:02:11,731 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:02:11,732 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:02:11,732 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 04:02:11,733 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/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 [2019-11-20 04:02:11,738 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:02:11,740 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:02:11,740 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:02:11,740 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:02:11,740 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:02:11,741 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:02:11,741 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:02:11,741 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 04:02:11,742 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/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 [2019-11-20 04:02:11,749 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:02:11,750 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:02:11,751 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:02:11,751 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:02:11,751 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:02:11,751 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:02:11,753 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:02:11,753 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 04:02:11,756 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 04:02:11,760 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-20 04:02:11,761 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_7fe1bb11-16e1-4555-8732-67f48652d1e9/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 [2019-11-20 04:02:11,764 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 04:02:11,764 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 04:02:11,764 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 04:02:11,764 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 [] [2019-11-20 04:02:11,766 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 04:02:11,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:02:11,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:02:11,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:02:11,787 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:02:11,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:02:11,794 WARN L253 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 04:02:11,794 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:02:11,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:02:11,840 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2019-11-20 04:02:11,840 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 33 transitions. cyclomatic complexity: 8 Second operand 5 states. [2019-11-20 04:02:11,850 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. [2019-11-20 04:02:11,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 04:02:11,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-20 04:02:11,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2019-11-20 04:02:11,852 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 11 letters. Loop has 6 letters. [2019-11-20 04:02:11,852 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:02:11,852 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 04:02:11,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:02:11,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:02:11,873 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:02:11,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:02:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:02:11,881 WARN L253 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 04:02:11,881 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:02:11,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:02:11,930 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 [2019-11-20 04:02:11,930 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 33 transitions. cyclomatic complexity: 8 Second operand 5 states. [2019-11-20 04:02:11,952 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. [2019-11-20 04:02:11,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 04:02:11,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-20 04:02:11,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2019-11-20 04:02:11,954 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 11 letters. Loop has 6 letters. [2019-11-20 04:02:11,954 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:02:11,954 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 04:02:11,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:02:11,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:02:11,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:02:11,979 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:02:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:02:11,991 WARN L253 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 04:02:11,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:02:12,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:02:12,043 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 [2019-11-20 04:02:12,043 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 33 transitions. cyclomatic complexity: 8 Second operand 5 states. [2019-11-20 04:02:12,256 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. [2019-11-20 04:02:12,260 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 [2019-11-20 04:02:12,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-20 04:02:12,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 45 transitions. [2019-11-20 04:02:12,260 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 45 transitions. Stem has 11 letters. Loop has 6 letters. [2019-11-20 04:02:12,261 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:02:12,261 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 45 transitions. Stem has 17 letters. Loop has 6 letters. [2019-11-20 04:02:12,262 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:02:12,262 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 45 transitions. Stem has 11 letters. Loop has 12 letters. [2019-11-20 04:02:12,263 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:02:12,263 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 101 states and 128 transitions. [2019-11-20 04:02:12,266 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 41 [2019-11-20 04:02:12,268 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 101 states to 82 states and 105 transitions. [2019-11-20 04:02:12,268 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2019-11-20 04:02:12,268 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2019-11-20 04:02:12,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 82 states and 105 transitions. [2019-11-20 04:02:12,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 04:02:12,268 INFO L688 BuchiCegarLoop]: Abstraction has 82 states and 105 transitions. [2019-11-20 04:02:12,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states and 105 transitions. [2019-11-20 04:02:12,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 59. [2019-11-20 04:02:12,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-11-20 04:02:12,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 78 transitions. [2019-11-20 04:02:12,280 INFO L711 BuchiCegarLoop]: Abstraction has 59 states and 78 transitions. [2019-11-20 04:02:12,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:02:12,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 04:02:12,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-11-20 04:02:12,282 INFO L87 Difference]: Start difference. First operand 59 states and 78 transitions. Second operand 6 states. [2019-11-20 04:02:12,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:02:12,335 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2019-11-20 04:02:12,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 04:02:12,336 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 60 transitions. [2019-11-20 04:02:12,337 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2019-11-20 04:02:12,337 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 34 states and 40 transitions. [2019-11-20 04:02:12,337 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2019-11-20 04:02:12,338 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2019-11-20 04:02:12,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 40 transitions. [2019-11-20 04:02:12,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 04:02:12,338 INFO L688 BuchiCegarLoop]: Abstraction has 34 states and 40 transitions. [2019-11-20 04:02:12,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 40 transitions. [2019-11-20 04:02:12,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2019-11-20 04:02:12,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-20 04:02:12,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2019-11-20 04:02:12,340 INFO L711 BuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2019-11-20 04:02:12,340 INFO L591 BuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2019-11-20 04:02:12,340 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-20 04:02:12,340 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states and 35 transitions. [2019-11-20 04:02:12,341 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2019-11-20 04:02:12,341 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:02:12,341 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:02:12,342 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:02:12,342 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:02:12,343 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 [2019-11-20 04:02:12,343 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 [2019-11-20 04:02:12,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:02:12,343 INFO L82 PathProgramCache]: Analyzing trace with hash -2088903248, now seen corresponding path program 3 times [2019-11-20 04:02:12,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:02:12,344 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457060834] [2019-11-20 04:02:12,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:02:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:02:12,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:02:12,356 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:02:12,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:02:12,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1576881701, now seen corresponding path program 1 times [2019-11-20 04:02:12,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:02:12,357 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889252500] [2019-11-20 04:02:12,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:02:12,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:02:12,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:02:12,372 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:02:12,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:02:12,373 INFO L82 PathProgramCache]: Analyzing trace with hash -604215978, now seen corresponding path program 1 times [2019-11-20 04:02:12,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:02:12,373 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152015889] [2019-11-20 04:02:12,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:02:12,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:02:12,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:02:12,396 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:02:12,515 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:02:12,515 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:02:12,515 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:02:12,515 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:02:12,515 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 04:02:12,515 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:02:12,515 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:02:12,515 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:02:12,515 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration5_Loop [2019-11-20 04:02:12,515 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:02:12,515 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:02:12,517 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:12,519 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:12,533 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:12,538 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:12,540 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:12,618 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:02:12,618 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/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 [2019-11-20 04:02:12,626 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:02:12,626 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:02:12,633 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:02:12,633 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_7fe1bb11-16e1-4555-8732-67f48652d1e9/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 [2019-11-20 04:02:12,638 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:02:12,638 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/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 [2019-11-20 04:02:12,674 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 04:02:12,674 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:02:12,975 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 04:02:12,977 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:02:12,977 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:02:12,977 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:02:12,977 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:02:12,978 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 04:02:12,978 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:02:12,978 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:02:12,978 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:02:12,978 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration5_Loop [2019-11-20 04:02:12,978 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:02:12,978 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:02:12,979 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:12,982 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:12,984 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:12,988 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:12,990 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:13,088 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:02:13,088 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/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 [2019-11-20 04:02:13,093 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:02:13,094 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:02:13,094 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:02:13,094 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:02:13,095 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:02:13,095 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:02:13,095 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:02:13,095 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 04:02:13,097 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/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 [2019-11-20 04:02:13,105 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:02:13,107 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:02:13,107 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:02:13,107 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:02:13,107 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:02:13,107 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:02:13,109 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:02:13,109 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 04:02:13,110 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/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 [2019-11-20 04:02:13,116 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:02:13,117 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:02:13,117 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:02:13,117 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:02:13,118 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:02:13,118 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:02:13,118 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:02:13,119 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 04:02:13,120 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/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 [2019-11-20 04:02:13,125 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:02:13,126 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:02:13,126 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:02:13,126 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:02:13,126 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:02:13,127 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:02:13,127 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:02:13,127 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 04:02:13,129 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/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 [2019-11-20 04:02:13,135 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:02:13,137 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:02:13,137 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:02:13,137 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:02:13,137 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:02:13,137 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:02:13,140 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:02:13,140 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 04:02:13,147 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 04:02:13,150 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 04:02:13,150 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_7fe1bb11-16e1-4555-8732-67f48652d1e9/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:02:13,154 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 04:02:13,154 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 04:02:13,154 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 04:02:13,154 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 3 Supporting invariants [] [2019-11-20 04:02:13,155 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 04:02:13,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:02:13,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:02:13,178 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:02:13,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:02:13,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:02:13,185 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 04:02:13,186 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:02:13,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:02:13,264 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 7 loop predicates [2019-11-20 04:02:13,265 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 29 states and 35 transitions. cyclomatic complexity: 8 Second operand 8 states. [2019-11-20 04:02:13,428 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. [2019-11-20 04:02:13,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 1 stem states 8 non-accepting loop states 1 accepting loop states [2019-11-20 04:02:13,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-20 04:02:13,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 40 transitions. [2019-11-20 04:02:13,429 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 11 letters. Loop has 9 letters. [2019-11-20 04:02:13,429 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:02:13,429 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 20 letters. Loop has 9 letters. [2019-11-20 04:02:13,430 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:02:13,430 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 11 letters. Loop has 18 letters. [2019-11-20 04:02:13,430 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:02:13,430 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 117 states and 146 transitions. [2019-11-20 04:02:13,432 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 24 [2019-11-20 04:02:13,433 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 117 states to 115 states and 144 transitions. [2019-11-20 04:02:13,433 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2019-11-20 04:02:13,434 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2019-11-20 04:02:13,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 115 states and 144 transitions. [2019-11-20 04:02:13,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 04:02:13,434 INFO L688 BuchiCegarLoop]: Abstraction has 115 states and 144 transitions. [2019-11-20 04:02:13,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states and 144 transitions. [2019-11-20 04:02:13,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 73. [2019-11-20 04:02:13,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2019-11-20 04:02:13,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 94 transitions. [2019-11-20 04:02:13,439 INFO L711 BuchiCegarLoop]: Abstraction has 73 states and 94 transitions. [2019-11-20 04:02:13,440 INFO L591 BuchiCegarLoop]: Abstraction has 73 states and 94 transitions. [2019-11-20 04:02:13,440 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-20 04:02:13,440 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 73 states and 94 transitions. [2019-11-20 04:02:13,441 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2019-11-20 04:02:13,441 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:02:13,441 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:02:13,443 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:02:13,443 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2019-11-20 04:02:13,443 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 [2019-11-20 04:02:13,444 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 [2019-11-20 04:02:13,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:02:13,444 INFO L82 PathProgramCache]: Analyzing trace with hash -2088903248, now seen corresponding path program 4 times [2019-11-20 04:02:13,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:02:13,444 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482556016] [2019-11-20 04:02:13,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:02:13,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:02:13,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:02:13,456 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:02:13,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:02:13,457 INFO L82 PathProgramCache]: Analyzing trace with hash 2078695422, now seen corresponding path program 1 times [2019-11-20 04:02:13,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:02:13,457 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912193514] [2019-11-20 04:02:13,457 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:02:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:02:13,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:02:13,472 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:02:13,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:02:13,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1741881747, now seen corresponding path program 2 times [2019-11-20 04:02:13,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:02:13,473 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103524181] [2019-11-20 04:02:13,473 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:02:13,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:02:13,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:02:13,490 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:02:13,582 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:02:13,582 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:02:13,583 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:02:13,583 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:02:13,583 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 04:02:13,583 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:02:13,583 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:02:13,583 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:02:13,583 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration6_Loop [2019-11-20 04:02:13,583 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:02:13,583 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:02:13,584 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:13,598 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:13,599 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:13,603 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:13,659 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:02:13,659 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/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 [2019-11-20 04:02:13,663 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:02:13,663 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/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 [2019-11-20 04:02:13,670 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 04:02:13,671 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:02:14,086 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 04:02:14,088 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:02:14,088 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:02:14,088 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:02:14,088 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:02:14,088 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 04:02:14,088 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:02:14,088 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:02:14,088 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:02:14,088 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration6_Loop [2019-11-20 04:02:14,088 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:02:14,089 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:02:14,089 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:14,103 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:14,109 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:14,111 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:14,164 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:02:14,164 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:02:14,177 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:02:14,180 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:02:14,180 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:02:14,181 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:02:14,181 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:02:14,181 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:02:14,183 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:02:14,183 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:02:14,187 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 04:02:14,192 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-20 04:02:14,193 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_7fe1bb11-16e1-4555-8732-67f48652d1e9/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:02:14,201 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 04:02:14,201 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 04:02:14,201 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 04:02:14,201 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 [] [2019-11-20 04:02:14,203 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:02:14,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:02:14,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:02:14,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:02:14,285 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:02:14,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:02:14,292 INFO L255 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 04:02:14,292 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:02:14,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:02:14,356 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2019-11-20 04:02:14,356 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 73 states and 94 transitions. cyclomatic complexity: 25 Second operand 5 states. [2019-11-20 04:02:14,364 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. [2019-11-20 04:02:14,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 04:02:14,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-20 04:02:14,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-11-20 04:02:14,365 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 11 letters. Loop has 6 letters. [2019-11-20 04:02:14,366 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:02:14,366 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 04:02:14,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:02:14,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:02:14,392 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:02:14,393 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:02:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:02:14,400 INFO L255 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 04:02:14,401 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:02:14,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:02:14,456 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 [2019-11-20 04:02:14,456 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 73 states and 94 transitions. cyclomatic complexity: 25 Second operand 5 states. [2019-11-20 04:02:14,466 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. [2019-11-20 04:02:14,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 04:02:14,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-20 04:02:14,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-11-20 04:02:14,468 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 11 letters. Loop has 6 letters. [2019-11-20 04:02:14,468 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:02:14,468 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 04:02:14,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:02:14,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:02:14,490 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:02:14,490 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:02:14,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:02:14,495 INFO L255 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 04:02:14,496 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:02:14,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:02:14,543 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 [2019-11-20 04:02:14,543 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 73 states and 94 transitions. cyclomatic complexity: 25 Second operand 5 states. [2019-11-20 04:02:14,624 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. [2019-11-20 04:02:14,627 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 [2019-11-20 04:02:14,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-20 04:02:14,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 34 transitions. [2019-11-20 04:02:14,628 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 11 letters. Loop has 6 letters. [2019-11-20 04:02:14,628 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:02:14,628 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 17 letters. Loop has 6 letters. [2019-11-20 04:02:14,629 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:02:14,629 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 11 letters. Loop has 12 letters. [2019-11-20 04:02:14,629 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:02:14,630 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 156 states and 196 transitions. [2019-11-20 04:02:14,632 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 28 [2019-11-20 04:02:14,634 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 156 states to 142 states and 180 transitions. [2019-11-20 04:02:14,634 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2019-11-20 04:02:14,634 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2019-11-20 04:02:14,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 142 states and 180 transitions. [2019-11-20 04:02:14,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 04:02:14,634 INFO L688 BuchiCegarLoop]: Abstraction has 142 states and 180 transitions. [2019-11-20 04:02:14,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states and 180 transitions. [2019-11-20 04:02:14,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 110. [2019-11-20 04:02:14,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2019-11-20 04:02:14,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 144 transitions. [2019-11-20 04:02:14,643 INFO L711 BuchiCegarLoop]: Abstraction has 110 states and 144 transitions. [2019-11-20 04:02:14,643 INFO L591 BuchiCegarLoop]: Abstraction has 110 states and 144 transitions. [2019-11-20 04:02:14,643 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-20 04:02:14,643 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 110 states and 144 transitions. [2019-11-20 04:02:14,644 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2019-11-20 04:02:14,644 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:02:14,644 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:02:14,645 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:02:14,645 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-20 04:02:14,645 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 [2019-11-20 04:02:14,646 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 [2019-11-20 04:02:14,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:02:14,646 INFO L82 PathProgramCache]: Analyzing trace with hash -2088903248, now seen corresponding path program 5 times [2019-11-20 04:02:14,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:02:14,646 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601348069] [2019-11-20 04:02:14,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:02:14,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:02:14,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:02:14,657 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:02:14,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:02:14,657 INFO L82 PathProgramCache]: Analyzing trace with hash -206190261, now seen corresponding path program 2 times [2019-11-20 04:02:14,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:02:14,657 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131651867] [2019-11-20 04:02:14,658 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:02:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:02:14,745 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:02:14,745 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131651867] [2019-11-20 04:02:14,745 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530969378] [2019-11-20 04:02:14,745 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/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 [2019-11-20 04:02:14,769 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 04:02:14,770 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 04:02:14,770 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 04:02:14,771 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:02:14,887 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:02:14,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 04:02:14,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2019-11-20 04:02:14,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212714378] [2019-11-20 04:02:14,888 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-20 04:02:14,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:02:14,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-20 04:02:14,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2019-11-20 04:02:14,889 INFO L87 Difference]: Start difference. First operand 110 states and 144 transitions. cyclomatic complexity: 38 Second operand 14 states. [2019-11-20 04:02:15,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:02:15,186 INFO L93 Difference]: Finished difference Result 270 states and 328 transitions. [2019-11-20 04:02:15,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-20 04:02:15,187 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 270 states and 328 transitions. [2019-11-20 04:02:15,189 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 63 [2019-11-20 04:02:15,192 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 270 states to 270 states and 328 transitions. [2019-11-20 04:02:15,192 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2019-11-20 04:02:15,193 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2019-11-20 04:02:15,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 270 states and 328 transitions. [2019-11-20 04:02:15,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 04:02:15,193 INFO L688 BuchiCegarLoop]: Abstraction has 270 states and 328 transitions. [2019-11-20 04:02:15,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states and 328 transitions. [2019-11-20 04:02:15,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 166. [2019-11-20 04:02:15,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2019-11-20 04:02:15,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 208 transitions. [2019-11-20 04:02:15,217 INFO L711 BuchiCegarLoop]: Abstraction has 166 states and 208 transitions. [2019-11-20 04:02:15,217 INFO L591 BuchiCegarLoop]: Abstraction has 166 states and 208 transitions. [2019-11-20 04:02:15,217 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-11-20 04:02:15,217 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 166 states and 208 transitions. [2019-11-20 04:02:15,218 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 37 [2019-11-20 04:02:15,218 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:02:15,218 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:02:15,219 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:02:15,219 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2019-11-20 04:02:15,219 INFO L794 eck$LassoCheckResult]: Stem: 2478#ULTIMATE.startENTRY ~__BLAST_NONDET~0 := 0; 2477#L-1 havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post6, main_#t~post5, main_#t~post4, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~l~0 := main_#t~nondet3;havoc main_#t~nondet3; 2452#L16 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 2453#L17 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 2454#L18 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 2459#L19 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 2460#L19-1 main_~i~0 := 0; 2455#L20-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 2456#L21-3 assume !(main_~j~0 < 3 * main_~i~0); 2468#L20-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 2469#L20-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 2494#L21-3 [2019-11-20 04:02:15,219 INFO L796 eck$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 [2019-11-20 04:02:15,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:02:15,219 INFO L82 PathProgramCache]: Analyzing trace with hash -2088903248, now seen corresponding path program 6 times [2019-11-20 04:02:15,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:02:15,220 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693393864] [2019-11-20 04:02:15,220 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:02:15,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:02:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:02:15,243 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:02:15,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:02:15,244 INFO L82 PathProgramCache]: Analyzing trace with hash 452506725, now seen corresponding path program 3 times [2019-11-20 04:02:15,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:02:15,245 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346165405] [2019-11-20 04:02:15,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:02:15,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:02:15,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:02:15,286 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:02:15,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:02:15,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1390681386, now seen corresponding path program 3 times [2019-11-20 04:02:15,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:02:15,287 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388705341] [2019-11-20 04:02:15,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:02:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:02:15,338 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:02:15,339 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388705341] [2019-11-20 04:02:15,339 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557001545] [2019-11-20 04:02:15,339 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/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 [2019-11-20 04:02:15,375 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-11-20 04:02:15,376 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 04:02:15,376 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 04:02:15,377 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:02:15,452 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:02:15,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 04:02:15,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2019-11-20 04:02:15,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969204807] [2019-11-20 04:02:15,659 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 29 [2019-11-20 04:02:15,662 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:02:15,662 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:02:15,662 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:02:15,662 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:02:15,662 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 04:02:15,662 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:02:15,662 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:02:15,662 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:02:15,663 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration8_Loop [2019-11-20 04:02:15,663 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:02:15,663 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:02:15,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:15,670 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:15,673 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:15,696 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:15,703 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:15,777 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:02:15,777 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/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) [2019-11-20 04:02:15,786 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:02:15,786 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:02:15,789 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:02:15,790 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_7fe1bb11-16e1-4555-8732-67f48652d1e9/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) [2019-11-20 04:02:15,797 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:02:15,798 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:02:15,801 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:02:15,801 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_7fe1bb11-16e1-4555-8732-67f48652d1e9/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) [2019-11-20 04:02:15,810 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:02:15,810 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/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) [2019-11-20 04:02:15,822 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 04:02:15,822 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:02:16,086 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 04:02:16,088 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:02:16,088 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:02:16,088 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:02:16,088 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:02:16,088 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 04:02:16,088 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:02:16,088 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:02:16,089 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:02:16,089 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration8_Loop [2019-11-20 04:02:16,089 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:02:16,089 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:02:16,090 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:16,092 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:16,093 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:16,111 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:16,116 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:16,176 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:02:16,176 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/bin/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:02:16,181 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:02:16,182 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:02:16,182 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:02:16,182 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:02:16,182 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:02:16,182 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:02:16,183 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:02:16,183 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 04:02:16,184 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/bin/uautomizer/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:02:16,192 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:02:16,194 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:02:16,194 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:02:16,194 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:02:16,194 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:02:16,194 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:02:16,195 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:02:16,195 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 04:02:16,196 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/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) [2019-11-20 04:02:16,201 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 Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:02:16,203 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:02:16,203 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:02:16,203 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:02:16,203 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:02:16,204 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:02:16,205 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:02:16,205 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 04:02:16,208 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 04:02:16,211 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 04:02:16,211 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_7fe1bb11-16e1-4555-8732-67f48652d1e9/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 [2019-11-20 04:02:16,217 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 04:02:16,217 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 04:02:16,217 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 04:02:16,217 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 5 Supporting invariants [] [2019-11-20 04:02:16,219 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 04:02:16,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:02:16,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:02:16,257 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:02:16,258 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:02:16,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:02:16,299 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 04:02:16,300 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:02:16,430 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:02:16,430 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 9 loop predicates [2019-11-20 04:02:16,430 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 166 states and 208 transitions. cyclomatic complexity: 46 Second operand 10 states. [2019-11-20 04:02:16,835 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. [2019-11-20 04:02:16,835 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 [2019-11-20 04:02:16,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-20 04:02:16,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 62 transitions. [2019-11-20 04:02:16,836 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states and 62 transitions. Stem has 11 letters. Loop has 15 letters. [2019-11-20 04:02:16,836 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:02:16,836 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states and 62 transitions. Stem has 26 letters. Loop has 15 letters. [2019-11-20 04:02:16,836 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:02:16,836 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states and 62 transitions. Stem has 11 letters. Loop has 30 letters. [2019-11-20 04:02:16,837 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:02:16,837 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 672 states and 840 transitions. [2019-11-20 04:02:16,842 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 79 [2019-11-20 04:02:16,846 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 672 states to 504 states and 629 transitions. [2019-11-20 04:02:16,846 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 48 [2019-11-20 04:02:16,847 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 48 [2019-11-20 04:02:16,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 504 states and 629 transitions. [2019-11-20 04:02:16,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 04:02:16,847 INFO L688 BuchiCegarLoop]: Abstraction has 504 states and 629 transitions. [2019-11-20 04:02:16,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states and 629 transitions. [2019-11-20 04:02:16,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 262. [2019-11-20 04:02:16,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2019-11-20 04:02:16,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 333 transitions. [2019-11-20 04:02:16,860 INFO L711 BuchiCegarLoop]: Abstraction has 262 states and 333 transitions. [2019-11-20 04:02:16,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:02:16,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-20 04:02:16,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2019-11-20 04:02:16,861 INFO L87 Difference]: Start difference. First operand 262 states and 333 transitions. Second operand 12 states. [2019-11-20 04:02:16,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:02:16,994 INFO L93 Difference]: Finished difference Result 338 states and 425 transitions. [2019-11-20 04:02:16,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 04:02:16,995 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 338 states and 425 transitions. [2019-11-20 04:02:16,998 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 40 [2019-11-20 04:02:17,000 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 338 states to 282 states and 357 transitions. [2019-11-20 04:02:17,000 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2019-11-20 04:02:17,000 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2019-11-20 04:02:17,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 282 states and 357 transitions. [2019-11-20 04:02:17,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 04:02:17,001 INFO L688 BuchiCegarLoop]: Abstraction has 282 states and 357 transitions. [2019-11-20 04:02:17,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states and 357 transitions. [2019-11-20 04:02:17,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 278. [2019-11-20 04:02:17,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2019-11-20 04:02:17,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 351 transitions. [2019-11-20 04:02:17,009 INFO L711 BuchiCegarLoop]: Abstraction has 278 states and 351 transitions. [2019-11-20 04:02:17,009 INFO L591 BuchiCegarLoop]: Abstraction has 278 states and 351 transitions. [2019-11-20 04:02:17,009 INFO L424 BuchiCegarLoop]: ======== Iteration 9============ [2019-11-20 04:02:17,009 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 278 states and 351 transitions. [2019-11-20 04:02:17,011 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 40 [2019-11-20 04:02:17,011 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:02:17,011 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:02:17,015 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:02:17,015 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 1, 1, 1] [2019-11-20 04:02:17,015 INFO L794 eck$LassoCheckResult]: Stem: 4163#ULTIMATE.startENTRY ~__BLAST_NONDET~0 := 0; 4162#L-1 havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post6, main_#t~post5, main_#t~post4, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~l~0 := main_#t~nondet3;havoc main_#t~nondet3; 4139#L16 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 4140#L17 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 4145#L18 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 4154#L19 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 4155#L19-1 main_~i~0 := 0; 4141#L20-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 4142#L21-3 assume !(main_~j~0 < 3 * main_~i~0); 4219#L20-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 4336#L20-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 4328#L21-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 4326#L22-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 4324#L4 assume !(0 == __VERIFIER_assert_~cond); 4323#L4-2 main_#t~post6 := main_~k~0;main_~k~0 := 1 + main_#t~post6;havoc main_#t~post6; 4220#L22-2 assume !(main_~k~0 < main_~j~0); 4221#L21-2 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 4329#L21-3 assume !(main_~j~0 < 3 * main_~i~0); 4207#L20-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 4208#L20-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 4177#L21-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 4159#L22-2 [2019-11-20 04:02:17,015 INFO L796 eck$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 [2019-11-20 04:02:17,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:02:17,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1550826094, now seen corresponding path program 4 times [2019-11-20 04:02:17,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:02:17,016 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458551858] [2019-11-20 04:02:17,016 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:02:17,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:02:17,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:02:17,046 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:02:17,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:02:17,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1734754794, now seen corresponding path program 2 times [2019-11-20 04:02:17,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:02:17,049 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258461227] [2019-11-20 04:02:17,049 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:02:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:02:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:02:17,059 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:02:17,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:02:17,060 INFO L82 PathProgramCache]: Analyzing trace with hash 538979237, now seen corresponding path program 5 times [2019-11-20 04:02:17,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:02:17,060 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005084892] [2019-11-20 04:02:17,060 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:02:17,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:02:17,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:02:17,081 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:02:17,211 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:02:17,211 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:02:17,211 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:02:17,211 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:02:17,211 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 04:02:17,211 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:02:17,211 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:02:17,211 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:02:17,211 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration9_Loop [2019-11-20 04:02:17,211 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:02:17,212 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:02:17,212 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:17,214 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:17,225 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:17,227 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:17,293 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:02:17,293 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/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 [2019-11-20 04:02:17,296 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:02:17,296 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:02:17,298 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:02:17,298 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_7fe1bb11-16e1-4555-8732-67f48652d1e9/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 [2019-11-20 04:02:17,303 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:02:17,303 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/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 [2019-11-20 04:02:17,310 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 04:02:17,310 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:02:17,792 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 04:02:17,794 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:02:17,794 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:02:17,794 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:02:17,794 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:02:17,794 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 04:02:17,794 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:02:17,794 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:02:17,794 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:02:17,794 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration9_Loop [2019-11-20 04:02:17,794 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:02:17,795 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:02:17,795 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:17,810 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:17,811 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:17,816 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:17,863 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:02:17,863 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/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 [2019-11-20 04:02:17,867 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:02:17,870 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:02:17,870 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:02:17,870 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:02:17,870 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:02:17,870 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:02:17,874 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:02:17,874 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 04:02:17,881 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 04:02:17,887 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 04:02:17,887 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_7fe1bb11-16e1-4555-8732-67f48652d1e9/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 [2019-11-20 04:02:17,890 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 04:02:17,890 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 04:02:17,890 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 04:02:17,891 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 [] [2019-11-20 04:02:17,892 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 04:02:17,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:02:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:02:17,915 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:02:17,916 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:02:17,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:02:17,935 INFO L255 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 04:02:17,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:02:17,956 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-20 04:02:17,956 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-20 04:02:17,956 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 278 states and 351 transitions. cyclomatic complexity: 82 Second operand 4 states. [2019-11-20 04:02:17,989 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. [2019-11-20 04:02:17,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 04:02:17,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 04:02:17,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2019-11-20 04:02:17,993 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 21 letters. Loop has 9 letters. [2019-11-20 04:02:17,993 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:02:17,993 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 04:02:18,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:02:18,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:02:18,012 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:02:18,013 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:02:18,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:02:18,021 INFO L255 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 04:02:18,022 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:02:18,028 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-20 04:02:18,029 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 [2019-11-20 04:02:18,029 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 278 states and 351 transitions. cyclomatic complexity: 82 Second operand 4 states. [2019-11-20 04:02:18,047 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. [2019-11-20 04:02:18,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 04:02:18,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 04:02:18,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2019-11-20 04:02:18,053 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 21 letters. Loop has 9 letters. [2019-11-20 04:02:18,053 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:02:18,053 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 04:02:18,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:02:18,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:02:18,083 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:02:18,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:02:18,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:02:18,097 INFO L255 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 04:02:18,098 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:02:18,106 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-20 04:02:18,107 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 [2019-11-20 04:02:18,107 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 278 states and 351 transitions. cyclomatic complexity: 82 Second operand 4 states. [2019-11-20 04:02:18,129 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. [2019-11-20 04:02:18,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 04:02:18,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 04:02:18,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2019-11-20 04:02:18,130 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 21 letters. Loop has 9 letters. [2019-11-20 04:02:18,130 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:02:18,130 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 30 letters. Loop has 9 letters. [2019-11-20 04:02:18,131 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:02:18,131 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 21 letters. Loop has 18 letters. [2019-11-20 04:02:18,131 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:02:18,131 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 503 states and 601 transitions. [2019-11-20 04:02:18,135 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 55 [2019-11-20 04:02:18,138 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 503 states to 383 states and 465 transitions. [2019-11-20 04:02:18,138 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2019-11-20 04:02:18,138 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2019-11-20 04:02:18,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 383 states and 465 transitions. [2019-11-20 04:02:18,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 04:02:18,139 INFO L688 BuchiCegarLoop]: Abstraction has 383 states and 465 transitions. [2019-11-20 04:02:18,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states and 465 transitions. [2019-11-20 04:02:18,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 324. [2019-11-20 04:02:18,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2019-11-20 04:02:18,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 393 transitions. [2019-11-20 04:02:18,146 INFO L711 BuchiCegarLoop]: Abstraction has 324 states and 393 transitions. [2019-11-20 04:02:18,146 INFO L591 BuchiCegarLoop]: Abstraction has 324 states and 393 transitions. [2019-11-20 04:02:18,146 INFO L424 BuchiCegarLoop]: ======== Iteration 10============ [2019-11-20 04:02:18,146 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 324 states and 393 transitions. [2019-11-20 04:02:18,148 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2019-11-20 04:02:18,148 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:02:18,148 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:02:18,149 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:02:18,149 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2019-11-20 04:02:18,150 INFO L794 eck$LassoCheckResult]: Stem: 5843#ULTIMATE.startENTRY ~__BLAST_NONDET~0 := 0; 5842#L-1 havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post6, main_#t~post5, main_#t~post4, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~l~0 := main_#t~nondet3;havoc main_#t~nondet3; 5815#L16 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 5816#L17 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 5821#L18 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 5831#L19 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 5832#L19-1 main_~i~0 := 0; 5817#L20-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 5818#L21-3 assume !(main_~j~0 < 3 * main_~i~0); 5959#L20-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 5900#L20-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 5902#L21-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 5905#L22-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 5899#L4 assume !(0 == __VERIFIER_assert_~cond); 5896#L4-2 main_#t~post6 := main_~k~0;main_~k~0 := 1 + main_#t~post6;havoc main_#t~post6; 5895#L22-2 assume !(main_~k~0 < main_~j~0); 5893#L21-2 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 5890#L21-3 assume !(main_~j~0 < 3 * main_~i~0); 5887#L20-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 5888#L20-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 5857#L21-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 5837#L22-2 [2019-11-20 04:02:18,150 INFO L796 eck$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 [2019-11-20 04:02:18,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:02:18,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1550826094, now seen corresponding path program 6 times [2019-11-20 04:02:18,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:02:18,151 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805452943] [2019-11-20 04:02:18,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:02:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:02:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:02:18,164 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:02:18,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:02:18,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1362433097, now seen corresponding path program 4 times [2019-11-20 04:02:18,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:02:18,165 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652623759] [2019-11-20 04:02:18,165 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:02:18,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:02:18,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:02:18,180 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:02:18,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:02:18,180 INFO L82 PathProgramCache]: Analyzing trace with hash -130724088, now seen corresponding path program 7 times [2019-11-20 04:02:18,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:02:18,180 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900414449] [2019-11-20 04:02:18,181 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:02:18,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:02:18,262 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 47 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-20 04:02:18,262 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900414449] [2019-11-20 04:02:18,262 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91181754] [2019-11-20 04:02:18,263 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/bin/uautomizer/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 04:02:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:02:18,300 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 04:02:18,301 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:02:18,437 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 41 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-20 04:02:18,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 04:02:18,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2019-11-20 04:02:18,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936773376] [2019-11-20 04:02:18,583 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2019-11-20 04:02:18,735 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 34 [2019-11-20 04:02:18,736 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:02:18,736 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:02:18,737 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:02:18,737 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:02:18,737 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 04:02:18,737 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:02:18,737 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:02:18,737 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:02:18,737 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration10_Loop [2019-11-20 04:02:18,737 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:02:18,737 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:02:18,738 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:18,742 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:18,743 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:18,745 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:18,752 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:18,843 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:02:18,843 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/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 [2019-11-20 04:02:18,852 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:02:18,852 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:02:18,855 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:02:18,855 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_7fe1bb11-16e1-4555-8732-67f48652d1e9/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 [2019-11-20 04:02:18,859 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:02:18,859 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:02:18,861 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:02:18,862 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_7fe1bb11-16e1-4555-8732-67f48652d1e9/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 [2019-11-20 04:02:18,865 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:02:18,865 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:02:18,868 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:02:18,868 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_7fe1bb11-16e1-4555-8732-67f48652d1e9/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 [2019-11-20 04:02:18,872 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:02:18,872 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:02:18,875 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:02:18,875 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_7fe1bb11-16e1-4555-8732-67f48652d1e9/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 [2019-11-20 04:02:18,879 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:02:18,880 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/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 [2019-11-20 04:02:18,887 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 04:02:18,887 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:02:19,363 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 04:02:19,365 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:02:19,365 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:02:19,365 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:02:19,365 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:02:19,366 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 04:02:19,366 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:02:19,366 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:02:19,366 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:02:19,366 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration10_Loop [2019-11-20 04:02:19,366 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:02:19,366 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:02:19,367 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:19,371 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:19,372 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:19,380 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:19,397 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:19,464 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:02:19,464 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/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 [2019-11-20 04:02:19,467 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:02:19,468 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:02:19,468 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:02:19,469 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:02:19,469 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:02:19,469 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:02:19,469 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:02:19,469 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 04:02:19,470 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/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 [2019-11-20 04:02:19,474 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:02:19,475 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:02:19,475 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:02:19,475 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:02:19,475 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:02:19,475 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:02:19,476 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:02:19,476 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 04:02:19,477 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/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 [2019-11-20 04:02:19,481 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:02:19,482 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:02:19,482 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:02:19,482 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:02:19,482 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:02:19,482 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:02:19,483 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:02:19,483 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 04:02:19,484 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/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 [2019-11-20 04:02:19,490 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:02:19,492 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:02:19,492 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:02:19,492 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:02:19,492 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:02:19,492 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:02:19,494 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:02:19,494 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 04:02:19,496 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 04:02:19,500 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-20 04:02:19,500 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_7fe1bb11-16e1-4555-8732-67f48652d1e9/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 [2019-11-20 04:02:19,503 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 04:02:19,503 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 04:02:19,503 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 04:02:19,503 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 [] [2019-11-20 04:02:19,504 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 04:02:19,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:02:19,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:02:19,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:02:19,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:02:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:02:19,534 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 04:02:19,534 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:02:19,549 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-11-20 04:02:19,550 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-20 04:02:19,550 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 324 states and 393 transitions. cyclomatic complexity: 78 Second operand 5 states. [2019-11-20 04:02:19,582 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. [2019-11-20 04:02:19,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 04:02:19,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-20 04:02:19,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 23 transitions. [2019-11-20 04:02:19,585 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 21 letters. Loop has 18 letters. [2019-11-20 04:02:19,586 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:02:19,586 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 39 letters. Loop has 18 letters. [2019-11-20 04:02:19,586 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:02:19,586 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 21 letters. Loop has 36 letters. [2019-11-20 04:02:19,586 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:02:19,586 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 763 states and 938 transitions. [2019-11-20 04:02:19,591 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 04:02:19,595 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 763 states to 496 states and 614 transitions. [2019-11-20 04:02:19,595 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2019-11-20 04:02:19,595 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2019-11-20 04:02:19,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 496 states and 614 transitions. [2019-11-20 04:02:19,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 04:02:19,596 INFO L688 BuchiCegarLoop]: Abstraction has 496 states and 614 transitions. [2019-11-20 04:02:19,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states and 614 transitions. [2019-11-20 04:02:19,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 477. [2019-11-20 04:02:19,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2019-11-20 04:02:19,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 584 transitions. [2019-11-20 04:02:19,605 INFO L711 BuchiCegarLoop]: Abstraction has 477 states and 584 transitions. [2019-11-20 04:02:19,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:02:19,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-20 04:02:19,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2019-11-20 04:02:19,606 INFO L87 Difference]: Start difference. First operand 477 states and 584 transitions. Second operand 16 states. [2019-11-20 04:02:20,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:02:20,128 INFO L93 Difference]: Finished difference Result 2171 states and 2570 transitions. [2019-11-20 04:02:20,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-11-20 04:02:20,128 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2171 states and 2570 transitions. [2019-11-20 04:02:20,141 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2019-11-20 04:02:20,152 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2171 states to 1574 states and 1871 transitions. [2019-11-20 04:02:20,152 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2019-11-20 04:02:20,152 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39 [2019-11-20 04:02:20,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1574 states and 1871 transitions. [2019-11-20 04:02:20,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 04:02:20,153 INFO L688 BuchiCegarLoop]: Abstraction has 1574 states and 1871 transitions. [2019-11-20 04:02:20,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states and 1871 transitions. [2019-11-20 04:02:20,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 566. [2019-11-20 04:02:20,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2019-11-20 04:02:20,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 682 transitions. [2019-11-20 04:02:20,170 INFO L711 BuchiCegarLoop]: Abstraction has 566 states and 682 transitions. [2019-11-20 04:02:20,170 INFO L591 BuchiCegarLoop]: Abstraction has 566 states and 682 transitions. [2019-11-20 04:02:20,171 INFO L424 BuchiCegarLoop]: ======== Iteration 11============ [2019-11-20 04:02:20,171 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 566 states and 682 transitions. [2019-11-20 04:02:20,173 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 04:02:20,173 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:02:20,173 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:02:20,174 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:02:20,174 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 04:02:20,175 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 [2019-11-20 04:02:20,175 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 [2019-11-20 04:02:20,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:02:20,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1984863707, now seen corresponding path program 8 times [2019-11-20 04:02:20,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:02:20,176 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857723240] [2019-11-20 04:02:20,176 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:02:20,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:02:20,220 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-20 04:02:20,220 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857723240] [2019-11-20 04:02:20,221 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779791786] [2019-11-20 04:02:20,221 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/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 [2019-11-20 04:02:20,258 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 04:02:20,258 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 04:02:20,259 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 04:02:20,260 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:02:20,314 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-20 04:02:20,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 04:02:20,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2019-11-20 04:02:20,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342235882] [2019-11-20 04:02:20,315 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-20 04:02:20,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:02:20,315 INFO L82 PathProgramCache]: Analyzing trace with hash 84523, now seen corresponding path program 1 times [2019-11-20 04:02:20,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:02:20,315 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183990378] [2019-11-20 04:02:20,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:02:20,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:02:20,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:02:20,319 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:02:20,345 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:02:20,345 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:02:20,345 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:02:20,345 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:02:20,345 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 04:02:20,345 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:02:20,345 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:02:20,346 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:02:20,346 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration11_Loop [2019-11-20 04:02:20,346 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:02:20,346 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:02:20,346 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:20,349 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:20,462 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:02:20,462 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/bin/uautomizer/z3 Starting monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:02:20,466 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:02:20,466 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:02:20,468 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:02:20,468 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_7fe1bb11-16e1-4555-8732-67f48652d1e9/bin/uautomizer/z3 Starting monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:02:20,473 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:02:20,473 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/bin/uautomizer/z3 Starting monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:02:20,481 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 04:02:20,481 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:02:21,345 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 04:02:21,347 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:02:21,347 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:02:21,347 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:02:21,347 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:02:21,347 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 04:02:21,347 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:02:21,347 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:02:21,348 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:02:21,348 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration11_Loop [2019-11-20 04:02:21,348 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:02:21,348 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:02:21,348 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:21,351 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:02:21,499 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:02:21,499 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/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 [2019-11-20 04:02:21,509 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:02:21,511 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:02:21,511 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:02:21,511 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:02:21,511 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:02:21,511 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:02:21,511 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:02:21,511 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 04:02:21,512 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fe1bb11-16e1-4555-8732-67f48652d1e9/bin/uautomizer/z3 Starting monitored process 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:02:21,516 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:02:21,518 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:02:21,518 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:02:21,518 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:02:21,518 INFO L204 nArgumentSynthesizer]: 4 loop disjuncts [2019-11-20 04:02:21,518 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:02:21,523 INFO L401 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2019-11-20 04:02:21,523 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 04:02:21,530 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 04:02:21,534 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 04:02:21,534 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_7fe1bb11-16e1-4555-8732-67f48652d1e9/bin/uautomizer/z3 Starting monitored process 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:02:21,537 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 04:02:21,537 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 04:02:21,537 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 04:02:21,537 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 [] [2019-11-20 04:02:21,539 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 04:02:21,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:02:21,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:02:21,560 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:02:21,561 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:02:21,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:02:21,566 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 04:02:21,566 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:02:21,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:02:21,572 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-20 04:02:21,572 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 566 states and 682 transitions. cyclomatic complexity: 129 Second operand 4 states. [2019-11-20 04:02:21,592 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. [2019-11-20 04:02:21,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 04:02:21,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 04:02:21,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2019-11-20 04:02:21,593 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 28 letters. Loop has 3 letters. [2019-11-20 04:02:21,593 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:02:21,593 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 04:02:21,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:02:21,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:02:21,625 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:02:21,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:02:21,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:02:21,631 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 04:02:21,632 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:02:21,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:02:21,646 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 [2019-11-20 04:02:21,647 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 566 states and 682 transitions. cyclomatic complexity: 129 Second operand 4 states. [2019-11-20 04:02:21,672 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. [2019-11-20 04:02:21,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 04:02:21,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 04:02:21,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2019-11-20 04:02:21,673 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 28 letters. Loop has 3 letters. [2019-11-20 04:02:21,674 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:02:21,674 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 04:02:21,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:02:21,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:02:21,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:02:21,702 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:02:21,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:02:21,709 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 04:02:21,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:02:21,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:02:21,717 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 [2019-11-20 04:02:21,717 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 566 states and 682 transitions. cyclomatic complexity: 129 Second operand 4 states. [2019-11-20 04:02:21,749 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. [2019-11-20 04:02:21,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 04:02:21,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 04:02:21,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 24 transitions. [2019-11-20 04:02:21,750 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 28 letters. Loop has 3 letters. [2019-11-20 04:02:21,751 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:02:21,751 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 31 letters. Loop has 3 letters. [2019-11-20 04:02:21,751 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:02:21,751 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 28 letters. Loop has 6 letters. [2019-11-20 04:02:21,751 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:02:21,752 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 929 states and 1074 transitions. [2019-11-20 04:02:21,758 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 04:02:21,758 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 929 states to 0 states and 0 transitions. [2019-11-20 04:02:21,758 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-20 04:02:21,758 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-20 04:02:21,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-20 04:02:21,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 04:02:21,759 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 04:02:21,759 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 04:02:21,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:02:21,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-20 04:02:21,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-20 04:02:21,760 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 11 states. [2019-11-20 04:02:21,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:02:21,760 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-11-20 04:02:21,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 04:02:21,760 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-11-20 04:02:21,761 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 04:02:21,761 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 04:02:21,761 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-20 04:02:21,761 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-20 04:02:21,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-20 04:02:21,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 04:02:21,762 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 04:02:21,762 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 04:02:21,762 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 04:02:21,762 INFO L424 BuchiCegarLoop]: ======== Iteration 12============ [2019-11-20 04:02:21,762 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-20 04:02:21,762 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 04:02:21,762 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-20 04:02:21,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 04:02:21 BoogieIcfgContainer [2019-11-20 04:02:21,769 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-20 04:02:21,770 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 04:02:21,770 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 04:02:21,770 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 04:02:21,771 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:59:05" (3/4) ... [2019-11-20 04:02:21,774 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 04:02:21,774 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 04:02:21,775 INFO L168 Benchmark]: Toolchain (without parser) took 197413.06 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 226.0 MB). Free memory was 950.1 MB in the beginning and 884.9 MB in the end (delta: 65.1 MB). Peak memory consumption was 291.1 MB. Max. memory is 11.5 GB. [2019-11-20 04:02:21,778 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:02:21,778 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 175.1 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -222.6 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-20 04:02:21,779 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.16 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:02:21,779 INFO L168 Benchmark]: Boogie Preprocessor took 19.25 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:02:21,779 INFO L168 Benchmark]: RCFGBuilder took 370.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 11.5 GB. [2019-11-20 04:02:21,780 INFO L168 Benchmark]: BuchiAutomizer took 196695.37 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 50.9 MB). Free memory was 1.2 GB in the beginning and 888.5 MB in the end (delta: 263.0 MB). Peak memory consumption was 313.9 MB. Max. memory is 11.5 GB. [2019-11-20 04:02:21,780 INFO L168 Benchmark]: Witness Printer took 4.30 ms. Allocated memory is still 1.3 GB. Free memory was 888.5 MB in the beginning and 884.9 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 11.5 GB. [2019-11-20 04:02:21,782 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 289.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 175.1 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -222.6 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.16 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.25 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 370.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 196695.37 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 50.9 MB). Free memory was 1.2 GB in the beginning and 888.5 MB in the end (delta: 263.0 MB). Peak memory consumption was 313.9 MB. Max. memory is 11.5 GB. * Witness Printer took 4.30 ms. Allocated memory is still 1.3 GB. Free memory was 888.5 MB in the beginning and 884.9 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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 196.6s and 12 iterations. TraceHistogramMax:4. Analysis of lassos took 8.8s. Construction of modules took 123.0s. Büchi inclusion checks took 64.3s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 13. Automata minimization 0.1s 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, 246 SDs, 0 SdLazy, 1003 SolverSat, 203 SolverUnsat, 10 SolverUnknown, 0 SolverNotchecked, 123.0s 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: 23ms VariablesStem: 0 VariablesLoop: 8 DisjunctsStem: 1 DisjunctsLoop: 4 SupportingInvariants: 0 MotzkinApplications: 8 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 11 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 9 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 3.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Exception during sending of exit command (exit): Broken pipe Received shutdown request...