./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-invgen/nested6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_165be019-709b-4865-9cce-c5adf55cd6fb/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_165be019-709b-4865-9cce-c5adf55cd6fb/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_165be019-709b-4865-9cce-c5adf55cd6fb/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_165be019-709b-4865-9cce-c5adf55cd6fb/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-invgen/nested6.i -s /tmp/vcloud-vcloud-master/worker/run_dir_165be019-709b-4865-9cce-c5adf55cd6fb/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_165be019-709b-4865-9cce-c5adf55cd6fb/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 934ee9c856a834ce808d29dea79c6912619f897f .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:56:09,591 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:56:09,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:56:09,607 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:56:09,608 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:56:09,609 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:56:09,611 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:56:09,619 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:56:09,623 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:56:09,627 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:56:09,628 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:56:09,629 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:56:09,630 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:56:09,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:56:09,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:56:09,634 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:56:09,635 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:56:09,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:56:09,638 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:56:09,641 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:56:09,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:56:09,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:56:09,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:56:09,649 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:56:09,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:56:09,652 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:56:09,652 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:56:09,653 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:56:09,653 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:56:09,654 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:56:09,654 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:56:09,655 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:56:09,656 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:56:09,656 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:56:09,657 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:56:09,657 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:56:09,658 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:56:09,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:56:09,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:56:09,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:56:09,660 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:56:09,661 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_165be019-709b-4865-9cce-c5adf55cd6fb/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-25 08:56:09,686 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:56:09,686 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:56:09,687 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:56:09,687 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:56:09,687 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:56:09,688 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-25 08:56:09,688 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-25 08:56:09,688 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-25 08:56:09,688 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-25 08:56:09,688 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-25 08:56:09,688 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-25 08:56:09,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:56:09,689 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:56:09,689 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:56:09,689 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:56:09,689 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:56:09,690 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:56:09,690 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-25 08:56:09,690 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-25 08:56:09,690 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-25 08:56:09,690 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:56:09,690 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:56:09,691 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-25 08:56:09,691 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:56:09,691 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-25 08:56:09,691 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:56:09,691 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:56:09,691 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-25 08:56:09,692 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:56:09,692 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:56:09,692 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-25 08:56:09,693 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-25 08:56:09,693 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_165be019-709b-4865-9cce-c5adf55cd6fb/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 -> 934ee9c856a834ce808d29dea79c6912619f897f [2019-11-25 08:56:09,835 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:56:09,845 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:56:09,848 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:56:09,849 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:56:09,849 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:56:09,850 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_165be019-709b-4865-9cce-c5adf55cd6fb/bin/uautomizer/../../sv-benchmarks/c/loop-invgen/nested6.i [2019-11-25 08:56:09,902 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_165be019-709b-4865-9cce-c5adf55cd6fb/bin/uautomizer/data/c6b0bd6df/19f78cde59ad4f12822d25fa891e5cd0/FLAGcd3172644 [2019-11-25 08:56:10,301 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:56:10,302 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_165be019-709b-4865-9cce-c5adf55cd6fb/sv-benchmarks/c/loop-invgen/nested6.i [2019-11-25 08:56:10,308 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_165be019-709b-4865-9cce-c5adf55cd6fb/bin/uautomizer/data/c6b0bd6df/19f78cde59ad4f12822d25fa891e5cd0/FLAGcd3172644 [2019-11-25 08:56:10,325 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_165be019-709b-4865-9cce-c5adf55cd6fb/bin/uautomizer/data/c6b0bd6df/19f78cde59ad4f12822d25fa891e5cd0 [2019-11-25 08:56:10,328 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:56:10,330 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:56:10,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:56:10,333 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:56:10,337 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:56:10,337 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:56:10" (1/1) ... [2019-11-25 08:56:10,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55c7b250 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:10, skipping insertion in model container [2019-11-25 08:56:10,340 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:56:10" (1/1) ... [2019-11-25 08:56:10,348 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:56:10,367 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:56:10,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:56:10,496 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:56:10,579 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:56:10,598 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:56:10,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:10 WrapperNode [2019-11-25 08:56:10,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:56:10,601 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:56:10,601 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:56:10,601 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:56:10,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:10" (1/1) ... [2019-11-25 08:56:10,613 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:10" (1/1) ... [2019-11-25 08:56:10,630 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:56:10,631 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:56:10,631 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:56:10,631 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:56:10,639 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:10" (1/1) ... [2019-11-25 08:56:10,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:10" (1/1) ... [2019-11-25 08:56:10,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:10" (1/1) ... [2019-11-25 08:56:10,641 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:10" (1/1) ... [2019-11-25 08:56:10,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:10" (1/1) ... [2019-11-25 08:56:10,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:10" (1/1) ... [2019-11-25 08:56:10,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:10" (1/1) ... [2019-11-25 08:56:10,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:56:10,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:56:10,650 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:56:10,650 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:56:10,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_165be019-709b-4865-9cce-c5adf55cd6fb/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:10,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:56:10,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:56:11,060 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:56:11,060 INFO L284 CfgBuilder]: Removed 13 assume(true) statements. [2019-11-25 08:56:11,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:11 BoogieIcfgContainer [2019-11-25 08:56:11,061 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:56:11,062 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-25 08:56:11,062 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-25 08:56:11,067 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-25 08:56:11,068 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:56:11,068 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 25.11 08:56:10" (1/3) ... [2019-11-25 08:56:11,069 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2ddec30f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:56:11, skipping insertion in model container [2019-11-25 08:56:11,069 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:56:11,069 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:10" (2/3) ... [2019-11-25 08:56:11,070 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2ddec30f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:56:11, skipping insertion in model container [2019-11-25 08:56:11,070 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:56:11,070 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:11" (3/3) ... [2019-11-25 08:56:11,071 INFO L371 chiAutomizerObserver]: Analyzing ICFG nested6.i [2019-11-25 08:56:11,111 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-25 08:56:11,111 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-25 08:56:11,111 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-25 08:56:11,111 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:56:11,112 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:56:11,112 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-25 08:56:11,112 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:56:11,112 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-25 08:56:11,125 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states. [2019-11-25 08:56:11,142 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2019-11-25 08:56:11,143 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:56:11,143 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:56:11,149 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-25 08:56:11,149 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:56:11,149 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-25 08:56:11,149 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states. [2019-11-25 08:56:11,151 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2019-11-25 08:56:11,152 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:56:11,152 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:56:11,152 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-25 08:56:11,152 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:56:11,159 INFO L794 eck$LassoCheckResult]: Stem: 13#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet5, main_#t~post6, main_#t~post4, main_#t~post3, main_~i~0, main_~j~0, main_~k~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;main_~k~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~n~0 := main_#t~nondet2;havoc main_#t~nondet2; 21#L14true assume !!(main_~n~0 < 1000000); 3#L15true assume main_~k~0 == main_~n~0; 22#L15-1true main_~i~0 := 0; 5#L19-3true [2019-11-25 08:56:11,160 INFO L796 eck$LassoCheckResult]: Loop: 5#L19-3true assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 8#L20-2true assume !(main_~j~0 < main_~n~0); 6#L19-2true main_#t~post3 := main_~i~0;main_~i~0 := 1 + main_#t~post3;havoc main_#t~post3; 5#L19-3true [2019-11-25 08:56:11,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:11,166 INFO L82 PathProgramCache]: Analyzing trace with hash 959370, now seen corresponding path program 1 times [2019-11-25 08:56:11,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:11,173 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953785077] [2019-11-25 08:56:11,174 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:11,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:11,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:11,258 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:11,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:11,259 INFO L82 PathProgramCache]: Analyzing trace with hash 50890, now seen corresponding path program 1 times [2019-11-25 08:56:11,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:11,260 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770307205] [2019-11-25 08:56:11,260 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:11,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:11,276 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:11,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:11,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1484158303, now seen corresponding path program 1 times [2019-11-25 08:56:11,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:11,278 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561220978] [2019-11-25 08:56:11,278 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:11,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:11,334 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561220978] [2019-11-25 08:56:11,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:11,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:56:11,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688341407] [2019-11-25 08:56:11,392 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:56:11,393 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:56:11,393 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:56:11,393 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:56:11,393 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:56:11,394 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:11,394 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:56:11,394 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:56:11,394 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration1_Loop [2019-11-25 08:56:11,394 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:56:11,394 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:56:11,408 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:11,425 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:11,488 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:56:11,488 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_165be019-709b-4865-9cce-c5adf55cd6fb/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:11,498 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:56:11,498 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_165be019-709b-4865-9cce-c5adf55cd6fb/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:11,518 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:56:11,519 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:11,774 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:56:11,776 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:56:11,776 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:56:11,776 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:56:11,777 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:56:11,777 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:56:11,777 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:11,777 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:56:11,777 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:56:11,777 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration1_Loop [2019-11-25 08:56:11,777 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:56:11,777 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:56:11,779 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:11,806 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:11,869 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:56:11,874 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_165be019-709b-4865-9cce-c5adf55cd6fb/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:11,889 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:56:11,892 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:11,892 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:56:11,894 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:11,894 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:11,894 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:11,899 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:56:11,900 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:11,908 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:56:11,918 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-25 08:56:11,918 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_165be019-709b-4865-9cce-c5adf55cd6fb/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:11,935 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:56:11,935 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:56:11,936 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:56:11,937 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-25 08:56:11,943 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:11,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:11,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:56:11,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:12,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:12,008 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:56:12,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:12,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:12,043 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-25 08:56:12,045 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states. Second operand 3 states. [2019-11-25 08:56:12,116 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states.. Second operand 3 states. Result 63 states and 90 transitions. Complement of second has 7 states. [2019-11-25 08:56:12,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-25 08:56:12,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:56:12,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 63 transitions. [2019-11-25 08:56:12,121 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 63 transitions. Stem has 4 letters. Loop has 3 letters. [2019-11-25 08:56:12,122 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:12,122 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 63 transitions. Stem has 7 letters. Loop has 3 letters. [2019-11-25 08:56:12,123 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:12,123 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 63 transitions. Stem has 4 letters. Loop has 6 letters. [2019-11-25 08:56:12,123 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:12,124 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 90 transitions. [2019-11-25 08:56:12,129 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2019-11-25 08:56:12,133 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 26 states and 33 transitions. [2019-11-25 08:56:12,134 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2019-11-25 08:56:12,135 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2019-11-25 08:56:12,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 33 transitions. [2019-11-25 08:56:12,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:56:12,136 INFO L688 BuchiCegarLoop]: Abstraction has 26 states and 33 transitions. [2019-11-25 08:56:12,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 33 transitions. [2019-11-25 08:56:12,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2019-11-25 08:56:12,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-25 08:56:12,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2019-11-25 08:56:12,165 INFO L711 BuchiCegarLoop]: Abstraction has 25 states and 32 transitions. [2019-11-25 08:56:12,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:12,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:56:12,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:56:12,170 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand 4 states. [2019-11-25 08:56:12,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:12,245 INFO L93 Difference]: Finished difference Result 46 states and 58 transitions. [2019-11-25 08:56:12,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:56:12,246 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 58 transitions. [2019-11-25 08:56:12,248 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 18 [2019-11-25 08:56:12,249 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 46 states and 58 transitions. [2019-11-25 08:56:12,249 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2019-11-25 08:56:12,249 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2019-11-25 08:56:12,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 58 transitions. [2019-11-25 08:56:12,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:56:12,250 INFO L688 BuchiCegarLoop]: Abstraction has 46 states and 58 transitions. [2019-11-25 08:56:12,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states and 58 transitions. [2019-11-25 08:56:12,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 26. [2019-11-25 08:56:12,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-25 08:56:12,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2019-11-25 08:56:12,254 INFO L711 BuchiCegarLoop]: Abstraction has 26 states and 33 transitions. [2019-11-25 08:56:12,254 INFO L591 BuchiCegarLoop]: Abstraction has 26 states and 33 transitions. [2019-11-25 08:56:12,254 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-25 08:56:12,254 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 33 transitions. [2019-11-25 08:56:12,255 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2019-11-25 08:56:12,255 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:56:12,255 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:56:12,256 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-25 08:56:12,256 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:56:12,256 INFO L794 eck$LassoCheckResult]: Stem: 230#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet5, main_#t~post6, main_#t~post4, main_#t~post3, main_~i~0, main_~j~0, main_~k~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;main_~k~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~n~0 := main_#t~nondet2;havoc main_#t~nondet2; 231#L14 assume !!(main_~n~0 < 1000000); 208#L15 assume main_~k~0 == main_~n~0; 209#L15-1 main_~i~0 := 0; 210#L19-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 212#L20-2 [2019-11-25 08:56:12,257 INFO L796 eck$LassoCheckResult]: Loop: 212#L20-2 assume !!(main_~j~0 < main_~n~0); 218#L21 assume 0 != main_#t~nondet5;havoc main_#t~nondet5;main_~k~0 := main_~j~0; 222#L22-2 assume !(main_~k~0 < main_~n~0); 216#L4-8 main_#t~post4 := main_~j~0;main_~j~0 := 1 + main_#t~post4;havoc main_#t~post4; 212#L20-2 [2019-11-25 08:56:12,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:12,257 INFO L82 PathProgramCache]: Analyzing trace with hash 29740491, now seen corresponding path program 1 times [2019-11-25 08:56:12,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:12,258 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313252443] [2019-11-25 08:56:12,258 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:12,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:12,267 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:12,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:12,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1819467, now seen corresponding path program 1 times [2019-11-25 08:56:12,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:12,268 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602083222] [2019-11-25 08:56:12,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:12,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:12,290 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602083222] [2019-11-25 08:56:12,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:12,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-25 08:56:12,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420951953] [2019-11-25 08:56:12,291 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-25 08:56:12,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:12,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:56:12,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:56:12,291 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. cyclomatic complexity: 9 Second operand 4 states. [2019-11-25 08:56:12,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:12,332 INFO L93 Difference]: Finished difference Result 28 states and 35 transitions. [2019-11-25 08:56:12,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:56:12,333 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2019-11-25 08:56:12,334 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2019-11-25 08:56:12,335 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 28 states and 35 transitions. [2019-11-25 08:56:12,335 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2019-11-25 08:56:12,335 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2019-11-25 08:56:12,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 35 transitions. [2019-11-25 08:56:12,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:56:12,335 INFO L688 BuchiCegarLoop]: Abstraction has 28 states and 35 transitions. [2019-11-25 08:56:12,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 35 transitions. [2019-11-25 08:56:12,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-25 08:56:12,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-25 08:56:12,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2019-11-25 08:56:12,342 INFO L711 BuchiCegarLoop]: Abstraction has 28 states and 35 transitions. [2019-11-25 08:56:12,342 INFO L591 BuchiCegarLoop]: Abstraction has 28 states and 35 transitions. [2019-11-25 08:56:12,342 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-25 08:56:12,342 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 35 transitions. [2019-11-25 08:56:12,343 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2019-11-25 08:56:12,344 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:56:12,345 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:56:12,345 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-25 08:56:12,345 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2019-11-25 08:56:12,346 INFO L794 eck$LassoCheckResult]: Stem: 293#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet5, main_#t~post6, main_#t~post4, main_#t~post3, main_~i~0, main_~j~0, main_~k~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;main_~k~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~n~0 := main_#t~nondet2;havoc main_#t~nondet2; 294#L14 assume !!(main_~n~0 < 1000000); 271#L15 assume main_~k~0 == main_~n~0; 272#L15-1 main_~i~0 := 0; 273#L19-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 275#L20-2 [2019-11-25 08:56:12,346 INFO L796 eck$LassoCheckResult]: Loop: 275#L20-2 assume !!(main_~j~0 < main_~n~0); 281#L21 assume !(0 != main_#t~nondet5);havoc main_#t~nondet5;__VERIFIER_assert_#in~cond := (if main_~k~0 >= main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 291#L4-3 assume !(0 == __VERIFIER_assert_~cond); 289#L4-5 __VERIFIER_assert_#in~cond := (if main_~k~0 <= main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 283#L4-6 assume !(0 == __VERIFIER_assert_~cond); 279#L4-8 main_#t~post4 := main_~j~0;main_~j~0 := 1 + main_#t~post4;havoc main_#t~post4; 275#L20-2 [2019-11-25 08:56:12,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:12,346 INFO L82 PathProgramCache]: Analyzing trace with hash 29740491, now seen corresponding path program 2 times [2019-11-25 08:56:12,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:12,348 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841051631] [2019-11-25 08:56:12,348 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:12,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:12,365 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:12,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:12,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1771408835, now seen corresponding path program 1 times [2019-11-25 08:56:12,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:12,366 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589614043] [2019-11-25 08:56:12,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:12,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:12,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:12,386 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:12,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:12,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1589140493, now seen corresponding path program 1 times [2019-11-25 08:56:12,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:12,387 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209159495] [2019-11-25 08:56:12,387 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:12,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:12,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:12,410 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:12,497 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:56:12,497 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:56:12,497 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:56:12,497 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:56:12,498 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:56:12,498 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:12,498 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:56:12,498 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:56:12,498 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration3_Loop [2019-11-25 08:56:12,498 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:56:12,498 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:56:12,500 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:12,522 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:12,526 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:12,530 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:12,606 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:56:12,606 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_165be019-709b-4865-9cce-c5adf55cd6fb/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:12,619 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:56:12,619 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_165be019-709b-4865-9cce-c5adf55cd6fb/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:12,630 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:56:12,630 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:56:13,018 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:56:13,021 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:56:13,021 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:56:13,021 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:56:13,021 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:56:13,022 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:56:13,022 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:13,022 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:56:13,022 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:56:13,022 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration3_Loop [2019-11-25 08:56:13,022 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:56:13,022 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:56:13,024 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:13,058 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:13,063 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:13,075 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:13,146 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:56:13,146 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_165be019-709b-4865-9cce-c5adf55cd6fb/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:13,162 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:56:13,166 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:13,166 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:56:13,167 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:13,167 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:13,167 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:13,170 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:56:13,170 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:13,174 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:56:13,202 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:56:13,202 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_165be019-709b-4865-9cce-c5adf55cd6fb/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) [2019-11-25 08:56:13,220 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:56:13,220 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:56:13,220 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:56:13,220 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0, ULTIMATE.start_main_~n~0) = -1*ULTIMATE.start_main_~j~0 + 1*ULTIMATE.start_main_~n~0 Supporting invariants [] [2019-11-25 08:56:13,224 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:13,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:13,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:13,262 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:56:13,263 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:13,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:13,277 INFO L255 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:56:13,277 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:13,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:13,299 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-25 08:56:13,299 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 35 transitions. cyclomatic complexity: 9 Second operand 3 states. [2019-11-25 08:56:13,348 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 35 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 71 states and 90 transitions. Complement of second has 7 states. [2019-11-25 08:56:13,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-25 08:56:13,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:56:13,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2019-11-25 08:56:13,351 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 5 letters. Loop has 6 letters. [2019-11-25 08:56:13,351 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:13,352 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 11 letters. Loop has 6 letters. [2019-11-25 08:56:13,352 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:13,352 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 5 letters. Loop has 12 letters. [2019-11-25 08:56:13,353 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:13,353 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 71 states and 90 transitions. [2019-11-25 08:56:13,355 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2019-11-25 08:56:13,356 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 71 states to 56 states and 71 transitions. [2019-11-25 08:56:13,357 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2019-11-25 08:56:13,357 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2019-11-25 08:56:13,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 71 transitions. [2019-11-25 08:56:13,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:56:13,360 INFO L688 BuchiCegarLoop]: Abstraction has 56 states and 71 transitions. [2019-11-25 08:56:13,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 71 transitions. [2019-11-25 08:56:13,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 43. [2019-11-25 08:56:13,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-25 08:56:13,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2019-11-25 08:56:13,370 INFO L711 BuchiCegarLoop]: Abstraction has 43 states and 54 transitions. [2019-11-25 08:56:13,370 INFO L591 BuchiCegarLoop]: Abstraction has 43 states and 54 transitions. [2019-11-25 08:56:13,370 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-25 08:56:13,371 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 43 states and 54 transitions. [2019-11-25 08:56:13,372 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2019-11-25 08:56:13,373 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:56:13,373 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:56:13,374 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:56:13,374 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:56:13,374 INFO L794 eck$LassoCheckResult]: Stem: 450#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet5, main_#t~post6, main_#t~post4, main_#t~post3, main_~i~0, main_~j~0, main_~k~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;main_~k~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~n~0 := main_#t~nondet2;havoc main_#t~nondet2; 451#L14 assume !!(main_~n~0 < 1000000); 427#L15 assume main_~k~0 == main_~n~0; 428#L15-1 main_~i~0 := 0; 429#L19-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 431#L20-2 assume !!(main_~j~0 < main_~n~0); 439#L21 assume 0 != main_#t~nondet5;havoc main_#t~nondet5;main_~k~0 := main_~j~0; 443#L22-2 [2019-11-25 08:56:13,374 INFO L796 eck$LassoCheckResult]: Loop: 443#L22-2 assume !!(main_~k~0 < main_~n~0);__VERIFIER_assert_#in~cond := (if main_~k~0 >= 2 * main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 444#L4 assume !(0 == __VERIFIER_assert_~cond); 453#L4-2 main_#t~post6 := main_~k~0;main_~k~0 := 1 + main_#t~post6;havoc main_#t~post6; 443#L22-2 [2019-11-25 08:56:13,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:13,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1484158290, now seen corresponding path program 1 times [2019-11-25 08:56:13,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:13,380 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173977134] [2019-11-25 08:56:13,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:13,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:13,411 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:13,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:13,412 INFO L82 PathProgramCache]: Analyzing trace with hash 69739, now seen corresponding path program 1 times [2019-11-25 08:56:13,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:13,412 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798967236] [2019-11-25 08:56:13,412 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:13,440 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:13,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:13,443 INFO L82 PathProgramCache]: Analyzing trace with hash 2128734878, now seen corresponding path program 1 times [2019-11-25 08:56:13,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:13,443 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054565386] [2019-11-25 08:56:13,444 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:13,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:13,489 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:13,523 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:56:13,523 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:56:13,523 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:56:13,524 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:56:13,524 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:56:13,524 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:13,524 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:56:13,524 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:56:13,524 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration4_Loop [2019-11-25 08:56:13,525 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:56:13,525 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:56:13,526 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:13,537 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:13,649 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:56:13,649 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_165be019-709b-4865-9cce-c5adf55cd6fb/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:13,663 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:56:13,663 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:13,670 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:56:13,670 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_165be019-709b-4865-9cce-c5adf55cd6fb/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:13,694 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:56:13,694 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_165be019-709b-4865-9cce-c5adf55cd6fb/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:13,717 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:56:13,717 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:14,176 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:56:14,179 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:56:14,179 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:56:14,179 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:56:14,180 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:56:14,180 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:56:14,180 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:14,180 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:56:14,180 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:56:14,180 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration4_Loop [2019-11-25 08:56:14,180 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:56:14,181 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:56:14,182 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:14,187 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:14,298 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:56:14,298 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_165be019-709b-4865-9cce-c5adf55cd6fb/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:14,315 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:56:14,317 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:14,317 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:56:14,318 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:14,318 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:14,318 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:14,319 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:56:14,319 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:14,322 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_165be019-709b-4865-9cce-c5adf55cd6fb/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:14,337 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:56:14,340 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:14,340 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:56:14,340 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:14,341 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:14,341 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:14,344 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:56:14,345 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:14,351 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:56:14,356 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:56:14,356 INFO L444 ModelExtractionUtils]: 4 out of 7 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_165be019-709b-4865-9cce-c5adf55cd6fb/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:14,371 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:56:14,371 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:56:14,372 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:56:14,372 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0, ULTIMATE.start_main_~n~0) = -1*ULTIMATE.start_main_~k~0 + 1*ULTIMATE.start_main_~n~0 Supporting invariants [] [2019-11-25 08:56:14,375 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:14,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:14,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:14,411 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:56:14,411 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:14,421 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:56:14,421 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:14,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:14,441 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-25 08:56:14,441 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 43 states and 54 transitions. cyclomatic complexity: 15 Second operand 3 states. [2019-11-25 08:56:14,499 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 43 states and 54 transitions. cyclomatic complexity: 15. Second operand 3 states. Result 132 states and 167 transitions. Complement of second has 7 states. [2019-11-25 08:56:14,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-25 08:56:14,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:56:14,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 27 transitions. [2019-11-25 08:56:14,501 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 7 letters. Loop has 3 letters. [2019-11-25 08:56:14,501 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:14,501 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 10 letters. Loop has 3 letters. [2019-11-25 08:56:14,502 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:14,502 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 7 letters. Loop has 6 letters. [2019-11-25 08:56:14,502 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:14,502 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 132 states and 167 transitions. [2019-11-25 08:56:14,506 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 25 [2019-11-25 08:56:14,508 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 132 states to 97 states and 121 transitions. [2019-11-25 08:56:14,508 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2019-11-25 08:56:14,509 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2019-11-25 08:56:14,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 97 states and 121 transitions. [2019-11-25 08:56:14,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:56:14,509 INFO L688 BuchiCegarLoop]: Abstraction has 97 states and 121 transitions. [2019-11-25 08:56:14,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states and 121 transitions. [2019-11-25 08:56:14,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 67. [2019-11-25 08:56:14,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-11-25 08:56:14,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 83 transitions. [2019-11-25 08:56:14,516 INFO L711 BuchiCegarLoop]: Abstraction has 67 states and 83 transitions. [2019-11-25 08:56:14,517 INFO L591 BuchiCegarLoop]: Abstraction has 67 states and 83 transitions. [2019-11-25 08:56:14,517 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-25 08:56:14,517 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 67 states and 83 transitions. [2019-11-25 08:56:14,518 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 19 [2019-11-25 08:56:14,519 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:56:14,519 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:56:14,520 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:56:14,520 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2019-11-25 08:56:14,520 INFO L794 eck$LassoCheckResult]: Stem: 682#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet5, main_#t~post6, main_#t~post4, main_#t~post3, main_~i~0, main_~j~0, main_~k~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;main_~k~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~n~0 := main_#t~nondet2;havoc main_#t~nondet2; 683#L14 assume !!(main_~n~0 < 1000000); 656#L15 assume main_~k~0 == main_~n~0; 657#L15-1 main_~i~0 := 0; 658#L19-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 659#L20-2 assume !!(main_~j~0 < main_~n~0); 703#L21 assume !(0 != main_#t~nondet5);havoc main_#t~nondet5;__VERIFIER_assert_#in~cond := (if main_~k~0 >= main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 708#L4-3 assume !(0 == __VERIFIER_assert_~cond); 707#L4-5 __VERIFIER_assert_#in~cond := (if main_~k~0 <= main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 706#L4-6 assume !(0 == __VERIFIER_assert_~cond); 705#L4-8 main_#t~post4 := main_~j~0;main_~j~0 := 1 + main_#t~post4;havoc main_#t~post4; 699#L20-2 assume !(main_~j~0 < main_~n~0); 701#L19-2 main_#t~post3 := main_~i~0;main_~i~0 := 1 + main_#t~post3;havoc main_#t~post3; 698#L19-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 697#L20-2 [2019-11-25 08:56:14,520 INFO L796 eck$LassoCheckResult]: Loop: 697#L20-2 assume !!(main_~j~0 < main_~n~0); 693#L21 assume !(0 != main_#t~nondet5);havoc main_#t~nondet5;__VERIFIER_assert_#in~cond := (if main_~k~0 >= main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 694#L4-3 assume !(0 == __VERIFIER_assert_~cond); 704#L4-5 __VERIFIER_assert_#in~cond := (if main_~k~0 <= main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 702#L4-6 assume !(0 == __VERIFIER_assert_~cond); 700#L4-8 main_#t~post4 := main_~j~0;main_~j~0 := 1 + main_#t~post4;havoc main_#t~post4; 697#L20-2 [2019-11-25 08:56:14,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:14,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1340048366, now seen corresponding path program 1 times [2019-11-25 08:56:14,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:14,522 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838589194] [2019-11-25 08:56:14,522 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:14,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:14,620 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838589194] [2019-11-25 08:56:14,620 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832271956] [2019-11-25 08:56:14,621 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_165be019-709b-4865-9cce-c5adf55cd6fb/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:56:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:14,663 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:56:14,664 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:14,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:14,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:56:14,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2019-11-25 08:56:14,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79104505] [2019-11-25 08:56:14,740 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-25 08:56:14,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:14,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1771408835, now seen corresponding path program 2 times [2019-11-25 08:56:14,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:14,740 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205758515] [2019-11-25 08:56:14,741 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:14,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:14,763 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:14,845 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:56:14,845 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:56:14,846 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:56:14,846 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:56:14,846 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:56:14,846 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:14,846 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:56:14,846 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:56:14,846 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration5_Loop [2019-11-25 08:56:14,846 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:56:14,846 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:56:14,848 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:14,859 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:14,861 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:14,864 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:14,931 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:56:14,931 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_165be019-709b-4865-9cce-c5adf55cd6fb/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:14,939 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:56:14,939 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_165be019-709b-4865-9cce-c5adf55cd6fb/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 [2019-11-25 08:56:14,954 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:56:14,954 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:56:15,280 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:56:15,282 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:56:15,282 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:56:15,282 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:56:15,282 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:56:15,282 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:56:15,282 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:15,282 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:56:15,282 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:56:15,282 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration5_Loop [2019-11-25 08:56:15,282 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:56:15,282 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:56:15,284 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:15,321 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:15,324 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:15,326 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:15,383 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:56:15,383 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_165be019-709b-4865-9cce-c5adf55cd6fb/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 [2019-11-25 08:56:15,392 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:56:15,394 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:15,394 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:56:15,394 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:15,395 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:15,395 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:15,403 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:56:15,403 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:56:15,409 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:56:15,420 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-25 08:56:15,420 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_165be019-709b-4865-9cce-c5adf55cd6fb/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 [2019-11-25 08:56:15,423 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:56:15,423 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:56:15,423 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:56:15,423 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2019-11-25 08:56:15,425 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:56:15,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:15,454 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:56:15,455 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:15,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:15,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:56:15,462 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:15,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:15,471 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-25 08:56:15,471 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 67 states and 83 transitions. cyclomatic complexity: 24 Second operand 3 states. [2019-11-25 08:56:15,512 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 67 states and 83 transitions. cyclomatic complexity: 24. Second operand 3 states. Result 123 states and 155 transitions. Complement of second has 7 states. [2019-11-25 08:56:15,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-25 08:56:15,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:56:15,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2019-11-25 08:56:15,515 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 14 letters. Loop has 6 letters. [2019-11-25 08:56:15,515 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:15,515 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:56:15,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:15,534 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:56:15,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:15,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:15,542 INFO L255 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:56:15,542 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:15,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:15,558 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 [2019-11-25 08:56:15,559 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 67 states and 83 transitions. cyclomatic complexity: 24 Second operand 3 states. [2019-11-25 08:56:15,578 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 67 states and 83 transitions. cyclomatic complexity: 24. Second operand 3 states. Result 123 states and 155 transitions. Complement of second has 7 states. [2019-11-25 08:56:15,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-25 08:56:15,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:56:15,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2019-11-25 08:56:15,580 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 14 letters. Loop has 6 letters. [2019-11-25 08:56:15,580 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:15,580 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:56:15,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:15,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:15,599 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:56:15,600 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:15,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:15,614 INFO L255 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:56:15,615 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:15,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:15,625 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 [2019-11-25 08:56:15,626 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 67 states and 83 transitions. cyclomatic complexity: 24 Second operand 3 states. [2019-11-25 08:56:15,657 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 67 states and 83 transitions. cyclomatic complexity: 24. Second operand 3 states. Result 123 states and 154 transitions. Complement of second has 6 states. [2019-11-25 08:56:15,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-25 08:56:15,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:56:15,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 32 transitions. [2019-11-25 08:56:15,658 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 32 transitions. Stem has 14 letters. Loop has 6 letters. [2019-11-25 08:56:15,659 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:15,659 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 32 transitions. Stem has 20 letters. Loop has 6 letters. [2019-11-25 08:56:15,659 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:15,659 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 32 transitions. Stem has 14 letters. Loop has 12 letters. [2019-11-25 08:56:15,660 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:15,660 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 123 states and 154 transitions. [2019-11-25 08:56:15,662 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-25 08:56:15,663 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 123 states to 74 states and 92 transitions. [2019-11-25 08:56:15,663 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2019-11-25 08:56:15,663 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2019-11-25 08:56:15,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 74 states and 92 transitions. [2019-11-25 08:56:15,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:56:15,663 INFO L688 BuchiCegarLoop]: Abstraction has 74 states and 92 transitions. [2019-11-25 08:56:15,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states and 92 transitions. [2019-11-25 08:56:15,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 48. [2019-11-25 08:56:15,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-11-25 08:56:15,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 61 transitions. [2019-11-25 08:56:15,667 INFO L711 BuchiCegarLoop]: Abstraction has 48 states and 61 transitions. [2019-11-25 08:56:15,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:15,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-25 08:56:15,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-25 08:56:15,668 INFO L87 Difference]: Start difference. First operand 48 states and 61 transitions. Second operand 11 states. [2019-11-25 08:56:15,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:15,756 INFO L93 Difference]: Finished difference Result 147 states and 180 transitions. [2019-11-25 08:56:15,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-25 08:56:15,756 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 147 states and 180 transitions. [2019-11-25 08:56:15,759 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2019-11-25 08:56:15,760 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 147 states to 143 states and 176 transitions. [2019-11-25 08:56:15,761 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2019-11-25 08:56:15,761 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2019-11-25 08:56:15,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 143 states and 176 transitions. [2019-11-25 08:56:15,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:56:15,761 INFO L688 BuchiCegarLoop]: Abstraction has 143 states and 176 transitions. [2019-11-25 08:56:15,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states and 176 transitions. [2019-11-25 08:56:15,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 60. [2019-11-25 08:56:15,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-11-25 08:56:15,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 75 transitions. [2019-11-25 08:56:15,766 INFO L711 BuchiCegarLoop]: Abstraction has 60 states and 75 transitions. [2019-11-25 08:56:15,766 INFO L591 BuchiCegarLoop]: Abstraction has 60 states and 75 transitions. [2019-11-25 08:56:15,766 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-25 08:56:15,767 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 60 states and 75 transitions. [2019-11-25 08:56:15,767 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:56:15,767 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:56:15,768 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:56:15,768 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:56:15,768 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:56:15,769 INFO L794 eck$LassoCheckResult]: Stem: 1578#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet5, main_#t~post6, main_#t~post4, main_#t~post3, main_~i~0, main_~j~0, main_~k~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;main_~k~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~n~0 := main_#t~nondet2;havoc main_#t~nondet2; 1579#L14 assume !!(main_~n~0 < 1000000); 1558#L15 assume main_~k~0 == main_~n~0; 1559#L15-1 main_~i~0 := 0; 1560#L19-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 1562#L20-2 assume !!(main_~j~0 < main_~n~0); 1569#L21 assume 0 != main_#t~nondet5;havoc main_#t~nondet5;main_~k~0 := main_~j~0; 1573#L22-2 assume !!(main_~k~0 < main_~n~0);__VERIFIER_assert_#in~cond := (if main_~k~0 >= 2 * main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1574#L4 assume !(0 == __VERIFIER_assert_~cond); 1581#L4-2 main_#t~post6 := main_~k~0;main_~k~0 := 1 + main_#t~post6;havoc main_#t~post6; 1582#L22-2 assume !(main_~k~0 < main_~n~0); 1592#L4-8 main_#t~post4 := main_~j~0;main_~j~0 := 1 + main_#t~post4;havoc main_#t~post4; 1583#L20-2 assume !!(main_~j~0 < main_~n~0); 1576#L21 assume 0 != main_#t~nondet5;havoc main_#t~nondet5;main_~k~0 := main_~j~0; 1571#L22-2 [2019-11-25 08:56:15,769 INFO L796 eck$LassoCheckResult]: Loop: 1571#L22-2 assume !!(main_~k~0 < main_~n~0);__VERIFIER_assert_#in~cond := (if main_~k~0 >= 2 * main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1572#L4 assume !(0 == __VERIFIER_assert_~cond); 1580#L4-2 main_#t~post6 := main_~k~0;main_~k~0 := 1 + main_#t~post6;havoc main_#t~post6; 1571#L22-2 [2019-11-25 08:56:15,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:15,769 INFO L82 PathProgramCache]: Analyzing trace with hash 279041640, now seen corresponding path program 1 times [2019-11-25 08:56:15,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:15,770 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264988880] [2019-11-25 08:56:15,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:15,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:15,814 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:15,814 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264988880] [2019-11-25 08:56:15,814 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930544474] [2019-11-25 08:56:15,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_165be019-709b-4865-9cce-c5adf55cd6fb/bin/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:56:15,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:15,835 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:56:15,836 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:15,841 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:15,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:56:15,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-11-25 08:56:15,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781461333] [2019-11-25 08:56:15,842 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-25 08:56:15,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:15,842 INFO L82 PathProgramCache]: Analyzing trace with hash 69739, now seen corresponding path program 2 times [2019-11-25 08:56:15,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:15,843 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128306393] [2019-11-25 08:56:15,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:15,850 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:15,875 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:56:15,875 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:56:15,875 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:56:15,875 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:56:15,875 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:56:15,875 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:15,876 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:56:15,876 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:56:15,876 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration6_Loop [2019-11-25 08:56:15,876 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:56:15,876 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:56:15,877 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:15,879 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:15,945 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:56:15,945 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_165be019-709b-4865-9cce-c5adf55cd6fb/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 [2019-11-25 08:56:15,949 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:56:15,949 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:56:15,951 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:56:15,952 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_165be019-709b-4865-9cce-c5adf55cd6fb/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 [2019-11-25 08:56:15,956 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:56:15,957 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_165be019-709b-4865-9cce-c5adf55cd6fb/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:15,975 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:56:15,975 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:16,288 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:56:16,290 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:56:16,290 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:56:16,290 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:56:16,290 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:56:16,290 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:56:16,290 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:16,290 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:56:16,291 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:56:16,291 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration6_Loop [2019-11-25 08:56:16,291 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:56:16,291 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:56:16,291 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:16,297 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:16,354 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:56:16,354 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_165be019-709b-4865-9cce-c5adf55cd6fb/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 [2019-11-25 08:56:16,358 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:56:16,359 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:16,359 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:56:16,359 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:16,359 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:16,359 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:16,360 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:56:16,360 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:56:16,361 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_165be019-709b-4865-9cce-c5adf55cd6fb/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 [2019-11-25 08:56:16,365 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:56:16,366 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:16,366 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:56:16,366 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:16,367 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:16,367 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:16,368 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:56:16,368 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:56:16,371 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:56:16,373 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:56:16,373 INFO L444 ModelExtractionUtils]: 4 out of 7 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_165be019-709b-4865-9cce-c5adf55cd6fb/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:16,377 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:56:16,377 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:56:16,377 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:56:16,377 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0, ULTIMATE.start_main_~n~0) = -1*ULTIMATE.start_main_~k~0 + 1*ULTIMATE.start_main_~n~0 Supporting invariants [] [2019-11-25 08:56:16,379 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:56:16,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:16,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:16,395 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:56:16,396 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:16,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:16,399 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:56:16,400 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:16,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:16,408 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-25 08:56:16,408 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 60 states and 75 transitions. cyclomatic complexity: 21 Second operand 3 states. [2019-11-25 08:56:16,432 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 60 states and 75 transitions. cyclomatic complexity: 21. Second operand 3 states. Result 115 states and 147 transitions. Complement of second has 7 states. [2019-11-25 08:56:16,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-25 08:56:16,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:56:16,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 27 transitions. [2019-11-25 08:56:16,442 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 14 letters. Loop has 3 letters. [2019-11-25 08:56:16,442 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:16,442 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:56:16,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:16,463 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:56:16,464 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:16,469 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:56:16,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:16,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:16,483 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 [2019-11-25 08:56:16,484 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 60 states and 75 transitions. cyclomatic complexity: 21 Second operand 3 states. [2019-11-25 08:56:16,506 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 60 states and 75 transitions. cyclomatic complexity: 21. Second operand 3 states. Result 115 states and 147 transitions. Complement of second has 7 states. [2019-11-25 08:56:16,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-25 08:56:16,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:56:16,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 27 transitions. [2019-11-25 08:56:16,508 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 14 letters. Loop has 3 letters. [2019-11-25 08:56:16,508 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:16,508 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:56:16,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:16,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:16,531 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:56:16,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:16,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:16,539 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:56:16,539 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:16,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:16,553 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 [2019-11-25 08:56:16,553 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 60 states and 75 transitions. cyclomatic complexity: 21 Second operand 3 states. [2019-11-25 08:56:16,585 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 60 states and 75 transitions. cyclomatic complexity: 21. Second operand 3 states. Result 94 states and 119 transitions. Complement of second has 6 states. [2019-11-25 08:56:16,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-25 08:56:16,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:56:16,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 32 transitions. [2019-11-25 08:56:16,587 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 32 transitions. Stem has 14 letters. Loop has 3 letters. [2019-11-25 08:56:16,587 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:16,587 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 32 transitions. Stem has 17 letters. Loop has 3 letters. [2019-11-25 08:56:16,588 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:16,588 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 32 transitions. Stem has 14 letters. Loop has 6 letters. [2019-11-25 08:56:16,588 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:16,588 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 94 states and 119 transitions. [2019-11-25 08:56:16,590 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:56:16,590 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 94 states to 0 states and 0 transitions. [2019-11-25 08:56:16,590 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-25 08:56:16,590 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-25 08:56:16,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-25 08:56:16,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:56:16,590 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:56:16,590 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:56:16,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:16,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:56:16,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:56:16,591 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 6 states. [2019-11-25 08:56:16,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:16,591 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-11-25 08:56:16,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:56:16,591 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-11-25 08:56:16,592 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:56:16,592 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-11-25 08:56:16,592 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-25 08:56:16,592 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-25 08:56:16,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-25 08:56:16,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:56:16,592 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:56:16,592 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:56:16,592 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:56:16,592 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-25 08:56:16,593 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:56:16,593 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:56:16,593 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-25 08:56:16,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 25.11 08:56:16 BoogieIcfgContainer [2019-11-25 08:56:16,604 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-25 08:56:16,606 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:56:16,606 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:56:16,606 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:56:16,607 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:11" (3/4) ... [2019-11-25 08:56:16,610 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-25 08:56:16,610 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:56:16,617 INFO L168 Benchmark]: Toolchain (without parser) took 6282.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 180.9 MB). Free memory was 946.1 MB in the beginning and 949.4 MB in the end (delta: -3.2 MB). Peak memory consumption was 177.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:16,618 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:56:16,618 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 180.9 MB). Free memory was 946.1 MB in the beginning and 1.2 GB in the end (delta: -232.2 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:16,618 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.65 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. [2019-11-25 08:56:16,619 INFO L168 Benchmark]: Boogie Preprocessor took 19.21 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:16,620 INFO L168 Benchmark]: RCFGBuilder took 411.28 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: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:16,625 INFO L168 Benchmark]: BuchiAutomizer took 5542.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 949.4 MB in the end (delta: 207.8 MB). Peak memory consumption was 207.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:16,625 INFO L168 Benchmark]: Witness Printer took 4.54 ms. Allocated memory is still 1.2 GB. Free memory is still 949.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:56:16,631 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 267.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 180.9 MB). Free memory was 946.1 MB in the beginning and 1.2 GB in the end (delta: -232.2 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.65 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 19.21 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 411.28 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: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 5542.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 949.4 MB in the end (delta: 207.8 MB). Peak memory consumption was 207.8 MB. Max. memory is 11.5 GB. * Witness Printer took 4.54 ms. Allocated memory is still 1.2 GB. Free memory is still 949.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 9 terminating modules (4 trivial, 3 deterministic, 2 nondeterministic). One deterministic module has affine ranking function n + -1 * i and consists of 5 locations. One deterministic module has affine ranking function -1 * j + n and consists of 4 locations. One deterministic module has affine ranking function -1 * k + n and consists of 4 locations. One nondeterministic module has affine ranking function n + -1 * j and consists of 4 locations. One nondeterministic module has affine ranking function -1 * k + n and consists of 4 locations. 4 modules have a trivial ranking function, the largest among these consists of 11 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.4s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 4.2s. Construction of modules took 0.3s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 7. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 173 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 67 states and ocurred in iteration 4. Nontrivial modules had stage [3, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 189 SDtfs, 349 SDslu, 123 SDs, 0 SdLazy, 297 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital24 mio100 ax100 hnf98 lsp85 ukn100 mio100 lsp100 div100 bol100 ite114 ukn100 eq152 hnf93 smp82 dnf100 smp100 tf107 neg99 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 61ms VariablesStem: 0 VariablesLoop: 4 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...