./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/UrbanMine-ESOP2014-Fig3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/UrbanMine-ESOP2014-Fig3.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 835dc6725bef5f7d15ae0e4368f1a97f9d2b8c09 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 17:47:11,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 17:47:11,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 17:47:11,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 17:47:11,950 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 17:47:11,950 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 17:47:11,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 17:47:11,952 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 17:47:11,954 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 17:47:11,954 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 17:47:11,955 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 17:47:11,956 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 17:47:11,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 17:47:11,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 17:47:11,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 17:47:11,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 17:47:11,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 17:47:11,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 17:47:11,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 17:47:11,963 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 17:47:11,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 17:47:11,965 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 17:47:11,966 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 17:47:11,967 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 17:47:11,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 17:47:11,969 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 17:47:11,969 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 17:47:11,969 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 17:47:11,969 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 17:47:11,970 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 17:47:11,970 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 17:47:11,971 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 17:47:11,971 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 17:47:11,972 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 17:47:11,973 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 17:47:11,973 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 17:47:11,973 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 17:47:11,973 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 17:47:11,974 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 17:47:11,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 17:47:11,975 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 17:47:11,975 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-12-07 17:47:11,990 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 17:47:11,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 17:47:11,991 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 17:47:11,991 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 17:47:11,991 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 17:47:11,992 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 17:47:11,992 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 17:47:11,992 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 17:47:11,992 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 17:47:11,992 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 17:47:11,992 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 17:47:11,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 17:47:11,993 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 17:47:11,993 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 17:47:11,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 17:47:11,993 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 17:47:11,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 17:47:11,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 17:47:11,994 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 17:47:11,994 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 17:47:11,994 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 17:47:11,994 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 17:47:11,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 17:47:11,995 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 17:47:11,995 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 17:47:11,995 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 17:47:11,995 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 17:47:11,996 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 17:47:11,996 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 17:47:11,997 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 17:47:11,997 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_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 835dc6725bef5f7d15ae0e4368f1a97f9d2b8c09 [2019-12-07 17:47:12,096 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 17:47:12,107 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 17:47:12,110 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 17:47:12,111 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 17:47:12,111 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 17:47:12,112 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/UrbanMine-ESOP2014-Fig3.c [2019-12-07 17:47:12,155 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/data/ac4a4464c/ba93085b2aac4d32867416be2f6bd7b7/FLAGb828f61d9 [2019-12-07 17:47:12,560 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 17:47:12,560 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/sv-benchmarks/c/termination-crafted-lit/UrbanMine-ESOP2014-Fig3.c [2019-12-07 17:47:12,564 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/data/ac4a4464c/ba93085b2aac4d32867416be2f6bd7b7/FLAGb828f61d9 [2019-12-07 17:47:12,572 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/data/ac4a4464c/ba93085b2aac4d32867416be2f6bd7b7 [2019-12-07 17:47:12,574 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 17:47:12,575 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 17:47:12,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 17:47:12,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 17:47:12,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 17:47:12,578 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:47:12" (1/1) ... [2019-12-07 17:47:12,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dbd2b2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:47:12, skipping insertion in model container [2019-12-07 17:47:12,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:47:12" (1/1) ... [2019-12-07 17:47:12,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 17:47:12,595 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 17:47:12,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:47:12,693 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 17:47:12,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:47:12,747 INFO L208 MainTranslator]: Completed translation [2019-12-07 17:47:12,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:47:12 WrapperNode [2019-12-07 17:47:12,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 17:47:12,749 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 17:47:12,749 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 17:47:12,749 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 17:47:12,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:47:12" (1/1) ... [2019-12-07 17:47:12,760 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:47:12" (1/1) ... [2019-12-07 17:47:12,771 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 17:47:12,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 17:47:12,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 17:47:12,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 17:47:12,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:47:12" (1/1) ... [2019-12-07 17:47:12,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:47:12" (1/1) ... [2019-12-07 17:47:12,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:47:12" (1/1) ... [2019-12-07 17:47:12,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:47:12" (1/1) ... [2019-12-07 17:47:12,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:47:12" (1/1) ... [2019-12-07 17:47:12,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:47:12" (1/1) ... [2019-12-07 17:47:12,782 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:47:12" (1/1) ... [2019-12-07 17:47:12,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 17:47:12,783 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 17:47:12,783 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 17:47:12,783 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 17:47:12,784 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:47:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:12,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 17:47:12,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 17:47:12,912 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 17:47:12,912 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-12-07 17:47:12,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:47:12 BoogieIcfgContainer [2019-12-07 17:47:12,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 17:47:12,913 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 17:47:12,913 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 17:47:12,915 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 17:47:12,916 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 17:47:12,916 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 05:47:12" (1/3) ... [2019-12-07 17:47:12,917 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@39f3178d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 05:47:12, skipping insertion in model container [2019-12-07 17:47:12,917 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 17:47:12,917 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:47:12" (2/3) ... [2019-12-07 17:47:12,917 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@39f3178d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 05:47:12, skipping insertion in model container [2019-12-07 17:47:12,917 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 17:47:12,917 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:47:12" (3/3) ... [2019-12-07 17:47:12,918 INFO L371 chiAutomizerObserver]: Analyzing ICFG UrbanMine-ESOP2014-Fig3.c [2019-12-07 17:47:12,947 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 17:47:12,947 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 17:47:12,948 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 17:47:12,948 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 17:47:12,948 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 17:47:12,948 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 17:47:12,948 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 17:47:12,948 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 17:47:12,957 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2019-12-07 17:47:12,969 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 17:47:12,969 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:47:12,969 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:47:12,974 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 17:47:12,974 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 17:47:12,974 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 17:47:12,974 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2019-12-07 17:47:12,975 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 17:47:12,975 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:47:12,975 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:47:12,975 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 17:47:12,975 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 17:47:12,980 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 10#L27-2true [2019-12-07 17:47:12,980 INFO L796 eck$LassoCheckResult]: Loop: 10#L27-2true assume !!(0 != main_~x~0 && main_~y~0 > 0); 7#L19true assume !(main_~x~0 > 0); 5#L27true assume 0 != main_#t~nondet4;havoc main_#t~nondet4;main_~x~0 := 1 + main_~x~0; 10#L27-2true [2019-12-07 17:47:12,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:47:12,984 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-12-07 17:47:12,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:47:12,990 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143441335] [2019-12-07 17:47:12,990 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:47:13,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:47:13,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:47:13,054 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:47:13,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:47:13,055 INFO L82 PathProgramCache]: Analyzing trace with hash 40076, now seen corresponding path program 1 times [2019-12-07 17:47:13,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:47:13,055 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014301473] [2019-12-07 17:47:13,056 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:47:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:47:13,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:47:13,064 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:47:13,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:47:13,065 INFO L82 PathProgramCache]: Analyzing trace with hash 963597, now seen corresponding path program 1 times [2019-12-07 17:47:13,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:47:13,065 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72840172] [2019-12-07 17:47:13,065 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:47:13,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:47:13,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:47:13,075 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:47:13,110 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:47:13,110 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:47:13,110 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:47:13,110 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:47:13,110 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 17:47:13,111 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:13,111 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:47:13,111 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:47:13,111 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration1_Loop [2019-12-07 17:47:13,111 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:47:13,111 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:47:13,126 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:13,132 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:13,135 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:13,138 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:13,141 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:13,207 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:47:13,207 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:13,211 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:47:13,211 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:47:13,218 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:47:13,218 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:13,222 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:47:13,222 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:47:13,226 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:47:13,226 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:13,230 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:47:13,230 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:47:13,233 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:47:13,233 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1} Honda state: {ULTIMATE.start_main_~y~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:13,237 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:47:13,237 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:47:13,240 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:47:13,241 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4=-5} Honda state: {ULTIMATE.start_main_#t~nondet4=-5} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:13,244 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:47:13,244 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:13,251 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 17:47:13,251 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:47:13,258 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 17:47:13,259 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:47:13,259 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:47:13,260 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:47:13,260 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:47:13,260 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 17:47:13,260 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:13,260 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:47:13,260 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:47:13,260 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration1_Loop [2019-12-07 17:47:13,260 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:47:13,260 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:47:13,262 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:13,264 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:13,266 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:13,269 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:13,271 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:13,329 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:47:13,333 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:13,336 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:47:13,338 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:47:13,338 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:47:13,338 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:47:13,338 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:47:13,342 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:47:13,343 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:47:13,347 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:13,351 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:47:13,352 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:47:13,352 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:47:13,353 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:47:13,353 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:47:13,353 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:47:13,354 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:47:13,354 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:47:13,355 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:13,359 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:47:13,360 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:47:13,360 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:47:13,360 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:47:13,361 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:47:13,363 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:47:13,363 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:47:13,366 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:13,370 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:47:13,371 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:47:13,371 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:47:13,371 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:47:13,372 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-12-07 17:47:13,372 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:47:13,372 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-12-07 17:47:13,373 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:47:13,375 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:13,379 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:47:13,381 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:47:13,381 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:47:13,381 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:47:13,381 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:47:13,381 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:47:13,382 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:47:13,383 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:47:13,385 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 17:47:13,388 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 17:47:13,389 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:13,393 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 17:47:13,393 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 17:47:13,393 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 17:47:13,394 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-12-07 17:47:13,397 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 17:47:13,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:47:13,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:47:13,421 INFO L264 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 17:47:13,422 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:47:13,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:47:13,428 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 17:47:13,428 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:47:13,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:47:13,448 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 17:47:13,449 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states. Second operand 4 states. [2019-12-07 17:47:13,486 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states.. Second operand 4 states. Result 33 states and 49 transitions. Complement of second has 8 states. [2019-12-07 17:47:13,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 17:47:13,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 17:47:13,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 17 transitions. [2019-12-07 17:47:13,489 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 1 letters. Loop has 3 letters. [2019-12-07 17:47:13,490 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:47:13,490 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 4 letters. Loop has 3 letters. [2019-12-07 17:47:13,490 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:47:13,490 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 1 letters. Loop has 6 letters. [2019-12-07 17:47:13,490 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:47:13,491 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 49 transitions. [2019-12-07 17:47:13,493 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2019-12-07 17:47:13,495 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 16 states and 25 transitions. [2019-12-07 17:47:13,496 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-12-07 17:47:13,496 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-12-07 17:47:13,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 25 transitions. [2019-12-07 17:47:13,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 17:47:13,497 INFO L688 BuchiCegarLoop]: Abstraction has 16 states and 25 transitions. [2019-12-07 17:47:13,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 25 transitions. [2019-12-07 17:47:13,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2019-12-07 17:47:13,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 17:47:13,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 23 transitions. [2019-12-07 17:47:13,514 INFO L711 BuchiCegarLoop]: Abstraction has 15 states and 23 transitions. [2019-12-07 17:47:13,514 INFO L591 BuchiCegarLoop]: Abstraction has 15 states and 23 transitions. [2019-12-07 17:47:13,515 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 17:47:13,515 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 23 transitions. [2019-12-07 17:47:13,515 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2019-12-07 17:47:13,515 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:47:13,515 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:47:13,516 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 17:47:13,516 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 17:47:13,516 INFO L794 eck$LassoCheckResult]: Stem: 82#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 83#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 94#L19 [2019-12-07 17:47:13,516 INFO L796 eck$LassoCheckResult]: Loop: 94#L19 assume main_~x~0 > 0; 95#L20 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := main_~y~0 - 1; 96#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 94#L19 [2019-12-07 17:47:13,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:47:13,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-12-07 17:47:13,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:47:13,516 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319886768] [2019-12-07 17:47:13,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:47:13,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:47:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:47:13,521 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:47:13,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:47:13,521 INFO L82 PathProgramCache]: Analyzing trace with hash 42852, now seen corresponding path program 1 times [2019-12-07 17:47:13,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:47:13,521 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143013834] [2019-12-07 17:47:13,522 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:47:13,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:47:13,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:47:13,527 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:47:13,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:47:13,527 INFO L82 PathProgramCache]: Analyzing trace with hash 29863643, now seen corresponding path program 1 times [2019-12-07 17:47:13,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:47:13,527 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805113675] [2019-12-07 17:47:13,527 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:47:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:47:13,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:47:13,533 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:47:13,550 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:47:13,550 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:47:13,550 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:47:13,550 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:47:13,551 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 17:47:13,551 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:13,551 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:47:13,551 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:47:13,551 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration2_Loop [2019-12-07 17:47:13,551 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:47:13,551 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:47:13,552 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:13,554 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:13,556 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:13,558 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:13,562 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:13,597 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:47:13,597 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:13,601 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:47:13,601 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:47:13,605 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:47:13,605 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:13,608 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:47:13,608 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:47:13,612 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:47:13,612 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:13,616 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:47:13,616 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:47:13,619 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:47:13,619 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:13,623 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:47:13,623 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:13,630 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 17:47:13,630 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:47:13,673 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 17:47:13,675 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:47:13,675 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:47:13,675 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:47:13,675 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:47:13,675 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 17:47:13,675 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:13,675 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:47:13,675 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:47:13,675 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration2_Loop [2019-12-07 17:47:13,675 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:47:13,675 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:47:13,676 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:13,679 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:13,680 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:13,682 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:13,686 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:13,719 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:47:13,719 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:13,725 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:47:13,726 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:47:13,726 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:47:13,727 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:47:13,727 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:47:13,728 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:47:13,728 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:47:13,732 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:13,735 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:47:13,737 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:47:13,737 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:47:13,737 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:47:13,737 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:47:13,739 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:47:13,739 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:47:13,743 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:13,746 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:47:13,747 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:47:13,748 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:47:13,748 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:47:13,748 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:47:13,748 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:47:13,749 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:47:13,749 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:47:13,750 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:13,754 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:47:13,755 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:47:13,755 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:47:13,755 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:47:13,755 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:47:13,756 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:47:13,756 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:47:13,757 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:47:13,759 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 17:47:13,763 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 17:47:13,763 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:13,765 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 17:47:13,765 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 17:47:13,766 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 17:47:13,766 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-12-07 17:47:13,767 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 17:47:13,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:47:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:47:13,784 INFO L264 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 17:47:13,784 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:47:13,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:47:13,788 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 17:47:13,788 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:47:13,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:47:13,803 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 17:47:13,804 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 23 transitions. cyclomatic complexity: 11 Second operand 4 states. [2019-12-07 17:47:13,826 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 23 transitions. cyclomatic complexity: 11. Second operand 4 states. Result 42 states and 70 transitions. Complement of second has 7 states. [2019-12-07 17:47:13,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 17:47:13,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 17:47:13,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2019-12-07 17:47:13,827 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 2 letters. Loop has 3 letters. [2019-12-07 17:47:13,828 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:47:13,828 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 3 letters. [2019-12-07 17:47:13,828 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:47:13,828 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 2 letters. Loop has 6 letters. [2019-12-07 17:47:13,828 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:47:13,829 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 70 transitions. [2019-12-07 17:47:13,831 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2019-12-07 17:47:13,832 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 36 states and 56 transitions. [2019-12-07 17:47:13,832 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2019-12-07 17:47:13,833 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2019-12-07 17:47:13,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 56 transitions. [2019-12-07 17:47:13,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 17:47:13,833 INFO L688 BuchiCegarLoop]: Abstraction has 36 states and 56 transitions. [2019-12-07 17:47:13,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 56 transitions. [2019-12-07 17:47:13,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2019-12-07 17:47:13,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-12-07 17:47:13,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 52 transitions. [2019-12-07 17:47:13,837 INFO L711 BuchiCegarLoop]: Abstraction has 32 states and 52 transitions. [2019-12-07 17:47:13,837 INFO L591 BuchiCegarLoop]: Abstraction has 32 states and 52 transitions. [2019-12-07 17:47:13,837 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 17:47:13,837 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 52 transitions. [2019-12-07 17:47:13,839 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2019-12-07 17:47:13,839 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:47:13,839 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:47:13,839 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-12-07 17:47:13,839 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 17:47:13,840 INFO L794 eck$LassoCheckResult]: Stem: 178#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 179#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 189#L19 assume main_~x~0 > 0; 185#L20 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 192#L27-2 [2019-12-07 17:47:13,840 INFO L796 eck$LassoCheckResult]: Loop: 192#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 209#L19 assume !(main_~x~0 > 0); 208#L27 assume 0 != main_#t~nondet4;havoc main_#t~nondet4;main_~x~0 := 1 + main_~x~0; 192#L27-2 [2019-12-07 17:47:13,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:47:13,840 INFO L82 PathProgramCache]: Analyzing trace with hash 963341, now seen corresponding path program 1 times [2019-12-07 17:47:13,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:47:13,840 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581499219] [2019-12-07 17:47:13,841 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:47:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:47:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:47:13,848 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:47:13,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:47:13,849 INFO L82 PathProgramCache]: Analyzing trace with hash 40076, now seen corresponding path program 2 times [2019-12-07 17:47:13,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:47:13,849 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709141335] [2019-12-07 17:47:13,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:47:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:47:13,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:47:13,854 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:47:13,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:47:13,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1365869056, now seen corresponding path program 1 times [2019-12-07 17:47:13,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:47:13,855 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105626996] [2019-12-07 17:47:13,855 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:47:13,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:47:13,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:47:13,893 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105626996] [2019-12-07 17:47:13,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:47:13,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 17:47:13,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220641846] [2019-12-07 17:47:13,911 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:47:13,911 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:47:13,911 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:47:13,911 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:47:13,911 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 17:47:13,911 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:13,912 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:47:13,912 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:47:13,912 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration3_Loop [2019-12-07 17:47:13,912 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:47:13,912 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:47:13,913 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:13,915 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:13,917 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:13,919 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:13,925 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:13,972 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:47:13,972 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:13,974 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:47:13,975 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:47:13,978 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:47:13,978 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1} Honda state: {ULTIMATE.start_main_~y~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:13,982 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:47:13,982 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:47:13,985 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:47:13,986 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4=-5} Honda state: {ULTIMATE.start_main_#t~nondet4=-5} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:13,989 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:47:13,989 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:47:13,993 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:47:13,993 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:13,997 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:47:13,997 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:14,003 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 17:47:14,003 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:47:14,009 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 17:47:14,009 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:47:14,010 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:47:14,010 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:47:14,010 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:47:14,010 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 17:47:14,010 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:14,010 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:47:14,010 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:47:14,010 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration3_Loop [2019-12-07 17:47:14,010 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:47:14,010 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:47:14,011 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:14,014 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:14,016 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:14,026 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:14,033 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:14,075 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:47:14,075 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:14,078 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:47:14,079 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:47:14,079 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:47:14,079 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:47:14,079 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:47:14,079 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:47:14,080 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:47:14,080 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:47:14,081 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:14,084 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:47:14,085 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:47:14,085 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:47:14,085 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:47:14,085 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-12-07 17:47:14,085 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:47:14,086 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-12-07 17:47:14,086 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:47:14,087 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:14,091 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:47:14,092 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:47:14,092 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:47:14,092 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:47:14,092 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:47:14,093 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:47:14,093 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:47:14,096 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:14,099 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:47:14,100 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:47:14,100 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:47:14,101 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:47:14,101 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:47:14,101 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:47:14,101 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:47:14,101 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:47:14,103 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 17:47:14,106 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-12-07 17:47:14,106 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:14,108 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 17:47:14,108 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 17:47:14,108 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 17:47:14,108 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-12-07 17:47:14,109 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 17:47:14,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:47:14,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:47:14,123 INFO L264 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 17:47:14,124 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:47:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:47:14,126 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 17:47:14,127 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:47:14,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:47:14,133 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 17:47:14,133 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 52 transitions. cyclomatic complexity: 26 Second operand 4 states. [2019-12-07 17:47:14,148 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 32 states and 52 transitions. cyclomatic complexity: 26. Second operand 4 states. Result 43 states and 69 transitions. Complement of second has 7 states. [2019-12-07 17:47:14,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 17:47:14,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 17:47:14,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2019-12-07 17:47:14,150 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 3 letters. [2019-12-07 17:47:14,150 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:47:14,150 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 7 letters. Loop has 3 letters. [2019-12-07 17:47:14,150 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:47:14,150 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 6 letters. [2019-12-07 17:47:14,150 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:47:14,151 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 69 transitions. [2019-12-07 17:47:14,152 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2019-12-07 17:47:14,153 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 43 states and 69 transitions. [2019-12-07 17:47:14,153 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2019-12-07 17:47:14,154 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2019-12-07 17:47:14,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 69 transitions. [2019-12-07 17:47:14,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 17:47:14,154 INFO L688 BuchiCegarLoop]: Abstraction has 43 states and 69 transitions. [2019-12-07 17:47:14,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 69 transitions. [2019-12-07 17:47:14,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2019-12-07 17:47:14,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-12-07 17:47:14,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 67 transitions. [2019-12-07 17:47:14,159 INFO L711 BuchiCegarLoop]: Abstraction has 42 states and 67 transitions. [2019-12-07 17:47:14,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:47:14,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 17:47:14,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 17:47:14,162 INFO L87 Difference]: Start difference. First operand 42 states and 67 transitions. Second operand 4 states. [2019-12-07 17:47:14,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:47:14,181 INFO L93 Difference]: Finished difference Result 42 states and 62 transitions. [2019-12-07 17:47:14,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 17:47:14,181 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 62 transitions. [2019-12-07 17:47:14,183 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2019-12-07 17:47:14,184 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 36 states and 53 transitions. [2019-12-07 17:47:14,184 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2019-12-07 17:47:14,184 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2019-12-07 17:47:14,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 53 transitions. [2019-12-07 17:47:14,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 17:47:14,184 INFO L688 BuchiCegarLoop]: Abstraction has 36 states and 53 transitions. [2019-12-07 17:47:14,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 53 transitions. [2019-12-07 17:47:14,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2019-12-07 17:47:14,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-07 17:47:14,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 43 transitions. [2019-12-07 17:47:14,187 INFO L711 BuchiCegarLoop]: Abstraction has 28 states and 43 transitions. [2019-12-07 17:47:14,187 INFO L591 BuchiCegarLoop]: Abstraction has 28 states and 43 transitions. [2019-12-07 17:47:14,187 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 17:47:14,188 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 43 transitions. [2019-12-07 17:47:14,188 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-12-07 17:47:14,188 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:47:14,188 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:47:14,189 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-12-07 17:47:14,189 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 17:47:14,189 INFO L794 eck$LassoCheckResult]: Stem: 384#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 385#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 410#L19 assume main_~x~0 > 0; 395#L20 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 393#L27-2 [2019-12-07 17:47:14,189 INFO L796 eck$LassoCheckResult]: Loop: 393#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 390#L19 assume main_~x~0 > 0; 391#L20 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 393#L27-2 [2019-12-07 17:47:14,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:47:14,189 INFO L82 PathProgramCache]: Analyzing trace with hash 963341, now seen corresponding path program 2 times [2019-12-07 17:47:14,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:47:14,189 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147414091] [2019-12-07 17:47:14,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:47:14,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:47:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:47:14,197 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:47:14,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:47:14,197 INFO L82 PathProgramCache]: Analyzing trace with hash 39820, now seen corresponding path program 1 times [2019-12-07 17:47:14,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:47:14,198 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574727572] [2019-12-07 17:47:14,198 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:47:14,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:47:14,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:47:14,203 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:47:14,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:47:14,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1365869312, now seen corresponding path program 3 times [2019-12-07 17:47:14,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:47:14,203 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112472766] [2019-12-07 17:47:14,204 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:47:14,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:47:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:47:14,213 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:47:14,232 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:47:14,233 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:47:14,233 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:47:14,233 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:47:14,233 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 17:47:14,233 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:14,233 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:47:14,233 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:47:14,233 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration4_Loop [2019-12-07 17:47:14,233 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:47:14,233 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:47:14,234 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:14,236 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:14,239 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:14,242 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:14,243 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:14,282 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:47:14,282 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:14,285 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:47:14,285 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:47:14,288 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:47:14,288 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:14,292 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:47:14,292 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:47:14,296 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:47:14,296 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1, ULTIMATE.start_main_#t~nondet3=1} Honda state: {ULTIMATE.start_main_~y~0=1, ULTIMATE.start_main_#t~nondet3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:14,300 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:47:14,300 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:14,306 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 17:47:14,306 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:47:14,311 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 17:47:14,312 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:47:14,312 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:47:14,312 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:47:14,312 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:47:14,312 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 17:47:14,312 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:14,312 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:47:14,312 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:47:14,312 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration4_Loop [2019-12-07 17:47:14,312 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:47:14,312 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:47:14,313 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:14,317 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:14,319 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:14,322 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:14,324 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:14,360 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:47:14,360 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:14,363 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:47:14,364 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:47:14,364 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:47:14,364 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:47:14,364 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:47:14,365 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:47:14,365 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:47:14,365 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:47:14,367 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:14,370 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:47:14,371 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:47:14,371 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:47:14,371 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:47:14,371 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:47:14,372 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:47:14,372 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:47:14,375 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:14,379 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:47:14,381 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:47:14,381 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:47:14,381 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:47:14,381 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:47:14,381 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:47:14,382 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:47:14,382 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:47:14,384 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 17:47:14,386 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-12-07 17:47:14,386 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:14,389 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 17:47:14,389 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 17:47:14,389 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 17:47:14,389 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-12-07 17:47:14,391 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 17:47:14,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:47:14,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:47:14,406 INFO L264 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 17:47:14,406 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:47:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:47:14,409 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 17:47:14,410 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:47:14,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:47:14,416 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 17:47:14,416 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 43 transitions. cyclomatic complexity: 21 Second operand 4 states. [2019-12-07 17:47:14,427 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 43 transitions. cyclomatic complexity: 21. Second operand 4 states. Result 35 states and 52 transitions. Complement of second has 6 states. [2019-12-07 17:47:14,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 17:47:14,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 17:47:14,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2019-12-07 17:47:14,428 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 3 letters. [2019-12-07 17:47:14,428 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:47:14,428 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 7 letters. Loop has 3 letters. [2019-12-07 17:47:14,428 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:47:14,428 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 6 letters. [2019-12-07 17:47:14,429 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:47:14,429 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 52 transitions. [2019-12-07 17:47:14,430 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-12-07 17:47:14,430 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 52 transitions. [2019-12-07 17:47:14,431 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2019-12-07 17:47:14,431 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2019-12-07 17:47:14,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 52 transitions. [2019-12-07 17:47:14,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 17:47:14,431 INFO L688 BuchiCegarLoop]: Abstraction has 35 states and 52 transitions. [2019-12-07 17:47:14,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 52 transitions. [2019-12-07 17:47:14,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2019-12-07 17:47:14,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-12-07 17:47:14,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 50 transitions. [2019-12-07 17:47:14,434 INFO L711 BuchiCegarLoop]: Abstraction has 33 states and 50 transitions. [2019-12-07 17:47:14,434 INFO L591 BuchiCegarLoop]: Abstraction has 33 states and 50 transitions. [2019-12-07 17:47:14,434 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-12-07 17:47:14,434 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 50 transitions. [2019-12-07 17:47:14,435 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-12-07 17:47:14,435 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:47:14,435 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:47:14,436 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2019-12-07 17:47:14,436 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 17:47:14,436 INFO L794 eck$LassoCheckResult]: Stem: 491#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 492#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 518#L19 assume main_~x~0 > 0; 498#L20 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 521#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 502#L19 [2019-12-07 17:47:14,436 INFO L796 eck$LassoCheckResult]: Loop: 502#L19 assume main_~x~0 > 0; 504#L20 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := main_~y~0 - 1; 501#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 502#L19 [2019-12-07 17:47:14,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:47:14,436 INFO L82 PathProgramCache]: Analyzing trace with hash 29863581, now seen corresponding path program 4 times [2019-12-07 17:47:14,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:47:14,436 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933261211] [2019-12-07 17:47:14,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:47:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:47:14,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:47:14,444 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:47:14,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:47:14,445 INFO L82 PathProgramCache]: Analyzing trace with hash 42852, now seen corresponding path program 2 times [2019-12-07 17:47:14,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:47:14,445 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411652362] [2019-12-07 17:47:14,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:47:14,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:47:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:47:14,450 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:47:14,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:47:14,450 INFO L82 PathProgramCache]: Analyzing trace with hash 607724360, now seen corresponding path program 1 times [2019-12-07 17:47:14,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:47:14,450 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035040150] [2019-12-07 17:47:14,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:47:14,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:47:14,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:47:14,458 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:47:14,474 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:47:14,474 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:47:14,474 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:47:14,474 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:47:14,474 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 17:47:14,474 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:14,474 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:47:14,474 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:47:14,474 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration5_Loop [2019-12-07 17:47:14,474 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:47:14,474 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:47:14,475 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:14,476 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:14,480 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:14,481 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:14,483 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:14,508 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:47:14,509 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:14,511 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:47:14,511 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:47:14,514 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:47:14,514 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:14,519 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:47:14,519 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:14,528 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 17:47:14,528 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:47:14,573 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 17:47:14,575 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:47:14,575 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:47:14,575 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:47:14,575 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:47:14,575 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 17:47:14,575 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:14,575 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:47:14,575 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:47:14,576 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration5_Loop [2019-12-07 17:47:14,576 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:47:14,576 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:47:14,576 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:14,578 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:14,581 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:14,583 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:14,584 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:14,609 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:47:14,609 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:14,611 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:47:14,612 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:47:14,612 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:47:14,613 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:47:14,613 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:47:14,613 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:47:14,613 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:47:14,613 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:47:14,615 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:14,619 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:47:14,620 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:47:14,620 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:47:14,620 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:47:14,620 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:47:14,620 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:47:14,620 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:47:14,621 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:47:14,622 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 17:47:14,624 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 17:47:14,624 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:14,627 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 17:47:14,627 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 17:47:14,627 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 17:47:14,627 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-12-07 17:47:14,629 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 17:47:14,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:47:14,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:47:14,639 INFO L264 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 17:47:14,640 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:47:14,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:47:14,642 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 17:47:14,643 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:47:14,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:47:14,648 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 17:47:14,648 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 50 transitions. cyclomatic complexity: 24 Second operand 4 states. [2019-12-07 17:47:14,662 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 50 transitions. cyclomatic complexity: 24. Second operand 4 states. Result 57 states and 89 transitions. Complement of second has 7 states. [2019-12-07 17:47:14,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 17:47:14,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 17:47:14,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2019-12-07 17:47:14,663 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 3 letters. [2019-12-07 17:47:14,663 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:47:14,663 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 17:47:14,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:47:14,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:47:14,673 INFO L264 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 17:47:14,673 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:47:14,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:47:14,675 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 17:47:14,675 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:47:14,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:47:14,680 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 17:47:14,680 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 50 transitions. cyclomatic complexity: 24 Second operand 4 states. [2019-12-07 17:47:14,694 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 50 transitions. cyclomatic complexity: 24. Second operand 4 states. Result 57 states and 89 transitions. Complement of second has 7 states. [2019-12-07 17:47:14,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 17:47:14,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 17:47:14,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2019-12-07 17:47:14,694 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 3 letters. [2019-12-07 17:47:14,694 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:47:14,694 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 17:47:14,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:47:14,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:47:14,704 INFO L264 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 17:47:14,704 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:47:14,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:47:14,706 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 17:47:14,707 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:47:14,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:47:14,712 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 17:47:14,712 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 50 transitions. cyclomatic complexity: 24 Second operand 4 states. [2019-12-07 17:47:14,726 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 50 transitions. cyclomatic complexity: 24. Second operand 4 states. Result 59 states and 92 transitions. Complement of second has 8 states. [2019-12-07 17:47:14,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 17:47:14,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 17:47:14,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2019-12-07 17:47:14,727 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 5 letters. Loop has 3 letters. [2019-12-07 17:47:14,727 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:47:14,727 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 8 letters. Loop has 3 letters. [2019-12-07 17:47:14,727 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:47:14,727 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 5 letters. Loop has 6 letters. [2019-12-07 17:47:14,728 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:47:14,728 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 59 states and 92 transitions. [2019-12-07 17:47:14,729 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 17:47:14,729 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 59 states to 17 states and 21 transitions. [2019-12-07 17:47:14,729 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-12-07 17:47:14,729 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-12-07 17:47:14,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 21 transitions. [2019-12-07 17:47:14,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 17:47:14,729 INFO L688 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-12-07 17:47:14,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 21 transitions. [2019-12-07 17:47:14,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2019-12-07 17:47:14,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 17:47:14,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2019-12-07 17:47:14,730 INFO L711 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2019-12-07 17:47:14,730 INFO L591 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2019-12-07 17:47:14,730 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-12-07 17:47:14,731 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 19 transitions. [2019-12-07 17:47:14,731 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 17:47:14,731 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:47:14,731 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:47:14,731 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1] [2019-12-07 17:47:14,731 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 17:47:14,731 INFO L794 eck$LassoCheckResult]: Stem: 812#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 813#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 818#L19 assume !(main_~x~0 > 0); 819#L27 assume !(0 != main_#t~nondet4);havoc main_#t~nondet4;main_~y~0 := main_~y~0 - 1;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5; 825#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 823#L19 assume !(main_~x~0 > 0); 814#L27 [2019-12-07 17:47:14,731 INFO L796 eck$LassoCheckResult]: Loop: 814#L27 assume 0 != main_#t~nondet4;havoc main_#t~nondet4;main_~x~0 := 1 + main_~x~0; 815#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 824#L19 assume !(main_~x~0 > 0); 814#L27 [2019-12-07 17:47:14,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:47:14,731 INFO L82 PathProgramCache]: Analyzing trace with hash 926018970, now seen corresponding path program 1 times [2019-12-07 17:47:14,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:47:14,732 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344217267] [2019-12-07 17:47:14,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:47:14,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:47:14,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:47:14,738 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:47:14,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:47:14,739 INFO L82 PathProgramCache]: Analyzing trace with hash 53186, now seen corresponding path program 3 times [2019-12-07 17:47:14,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:47:14,739 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560923661] [2019-12-07 17:47:14,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:47:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:47:14,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:47:14,743 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:47:14,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:47:14,743 INFO L82 PathProgramCache]: Analyzing trace with hash 456216457, now seen corresponding path program 1 times [2019-12-07 17:47:14,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:47:14,743 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410395423] [2019-12-07 17:47:14,743 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:47:14,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:47:14,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:47:14,750 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:47:14,763 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:47:14,763 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:47:14,763 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:47:14,763 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:47:14,763 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 17:47:14,763 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:14,763 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:47:14,763 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:47:14,763 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration6_Loop [2019-12-07 17:47:14,763 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:47:14,763 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:47:14,764 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:14,765 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:14,767 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:14,768 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:14,770 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:14,807 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:47:14,807 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:14,810 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:47:14,810 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:47:14,813 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:47:14,813 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4=-5} Honda state: {ULTIMATE.start_main_#t~nondet4=-5} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:14,818 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:47:14,818 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:47:14,821 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:47:14,821 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:14,825 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:47:14,825 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:47:14,828 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:47:14,828 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:14,832 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:47:14,832 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:47:14,835 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:47:14,835 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1} Honda state: {ULTIMATE.start_main_~y~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:14,839 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:47:14,840 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:14,847 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 17:47:14,847 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:47:14,883 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 17:47:14,884 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:47:14,884 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:47:14,884 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:47:14,885 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:47:14,885 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 17:47:14,885 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:14,885 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:47:14,885 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:47:14,885 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration6_Loop [2019-12-07 17:47:14,885 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:47:14,885 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:47:14,886 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:14,888 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:14,889 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:14,890 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:14,895 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:47:14,927 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:47:14,927 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:14,930 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:47:14,931 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:47:14,931 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:47:14,931 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:47:14,931 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-12-07 17:47:14,931 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:47:14,932 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-12-07 17:47:14,932 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:47:14,933 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:14,937 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:47:14,938 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:47:14,939 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:47:14,939 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:47:14,939 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:47:14,940 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:47:14,940 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:47:14,943 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:14,947 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:47:14,948 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:47:14,948 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:47:14,949 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:47:14,949 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:47:14,949 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:47:14,949 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:47:14,949 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:47:14,950 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:14,954 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:47:14,955 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:47:14,955 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:47:14,956 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:47:14,956 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:47:14,956 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:47:14,957 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:47:14,957 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:47:14,959 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 17:47:14,960 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-12-07 17:47:14,960 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b334f484-f4c1-4d1c-9349-f83ee645dcf3/bin/uautomizer/z3 Starting monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:47:14,963 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 17:47:14,963 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 17:47:14,963 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 17:47:14,963 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-12-07 17:47:14,965 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 17:47:14,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:47:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:47:14,980 INFO L264 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 17:47:14,980 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:47:14,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:47:14,983 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 17:47:14,984 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:47:14,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:47:14,990 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 17:47:14,990 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 7 Second operand 3 states. [2019-12-07 17:47:15,000 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 22 states and 26 transitions. Complement of second has 5 states. [2019-12-07 17:47:15,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 17:47:15,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 17:47:15,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-12-07 17:47:15,001 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 3 letters. [2019-12-07 17:47:15,001 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:47:15,001 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 17:47:15,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:47:15,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:47:15,023 INFO L264 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 17:47:15,023 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:47:15,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:47:15,025 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 17:47:15,026 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:47:15,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:47:15,031 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 17:47:15,031 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 7 Second operand 3 states. [2019-12-07 17:47:15,040 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 22 states and 26 transitions. Complement of second has 5 states. [2019-12-07 17:47:15,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 17:47:15,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 17:47:15,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-12-07 17:47:15,041 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 3 letters. [2019-12-07 17:47:15,041 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:47:15,041 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 17:47:15,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:47:15,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:47:15,051 INFO L264 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 17:47:15,051 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:47:15,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:47:15,054 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 17:47:15,054 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:47:15,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:47:15,059 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 17:47:15,059 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 7 Second operand 3 states. [2019-12-07 17:47:15,070 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 27 states and 32 transitions. Complement of second has 4 states. [2019-12-07 17:47:15,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 17:47:15,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 17:47:15,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-12-07 17:47:15,071 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 3 letters. [2019-12-07 17:47:15,071 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:47:15,071 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 3 letters. [2019-12-07 17:47:15,072 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:47:15,072 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 6 letters. [2019-12-07 17:47:15,072 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:47:15,072 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 32 transitions. [2019-12-07 17:47:15,073 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 17:47:15,073 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 0 states and 0 transitions. [2019-12-07 17:47:15,073 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 17:47:15,073 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 17:47:15,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 17:47:15,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 17:47:15,073 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 17:47:15,073 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 17:47:15,073 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 17:47:15,074 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-12-07 17:47:15,074 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 17:47:15,074 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 17:47:15,074 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 17:47:15,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 05:47:15 BoogieIcfgContainer [2019-12-07 17:47:15,079 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 17:47:15,080 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 17:47:15,080 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 17:47:15,080 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 17:47:15,080 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:47:12" (3/4) ... [2019-12-07 17:47:15,083 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 17:47:15,083 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 17:47:15,085 INFO L168 Benchmark]: Toolchain (without parser) took 2509.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -190.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:47:15,085 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:47:15,086 INFO L168 Benchmark]: CACSL2BoogieTranslator took 172.84 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 91.2 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -146.2 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-12-07 17:47:15,086 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.63 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:47:15,086 INFO L168 Benchmark]: Boogie Preprocessor took 11.36 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:47:15,087 INFO L168 Benchmark]: RCFGBuilder took 129.92 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2019-12-07 17:47:15,087 INFO L168 Benchmark]: BuchiAutomizer took 2166.36 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 64.0 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -63.7 MB). Peak memory consumption was 267.6 kB. Max. memory is 11.5 GB. [2019-12-07 17:47:15,088 INFO L168 Benchmark]: Witness Printer took 3.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:47:15,090 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 172.84 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 91.2 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -146.2 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.63 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.36 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 129.92 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2166.36 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 64.0 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -63.7 MB). Peak memory consumption was 267.6 kB. Max. memory is 11.5 GB. * Witness Printer took 3.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (1 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has affine ranking function -1 * x and consists of 5 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function -1 * x and consists of 4 locations. One deterministic module has affine ranking function x and consists of 4 locations. One nondeterministic module has affine ranking function y and consists of 4 locations. One nondeterministic module has affine ranking function -1 * x and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.1s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 1.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 18 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 33 states and ocurred in iteration 4. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 76 SDtfs, 73 SDslu, 32 SDs, 0 SdLazy, 117 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT5 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax162 hnf98 lsp38 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq165 hnf94 smp84 dnf100 smp100 tf112 neg97 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 13ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 17 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...