./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/c.02.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_1b8f4e9b-2f5b-4ac4-a307-b816a090a5a3/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1b8f4e9b-2f5b-4ac4-a307-b816a090a5a3/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1b8f4e9b-2f5b-4ac4-a307-b816a090a5a3/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1b8f4e9b-2f5b-4ac4-a307-b816a090a5a3/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/c.02.c -s /tmp/vcloud-vcloud-master/worker/working_dir_1b8f4e9b-2f5b-4ac4-a307-b816a090a5a3/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1b8f4e9b-2f5b-4ac4-a307-b816a090a5a3/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 c3e40038ef85c6e1a2de0a898912241a10300c47 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 09:00:46,003 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:00:46,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:00:46,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:00:46,015 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:00:46,016 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:00:46,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:00:46,019 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:00:46,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:00:46,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:00:46,021 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:00:46,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:00:46,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:00:46,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:00:46,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:00:46,025 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:00:46,025 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:00:46,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:00:46,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:00:46,029 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:00:46,030 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:00:46,031 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:00:46,032 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:00:46,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:00:46,034 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:00:46,034 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:00:46,034 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:00:46,035 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:00:46,035 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:00:46,036 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:00:46,036 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:00:46,037 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:00:46,037 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:00:46,038 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:00:46,038 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:00:46,038 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:00:46,039 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:00:46,039 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:00:46,040 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:00:46,040 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:00:46,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:00:46,041 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1b8f4e9b-2f5b-4ac4-a307-b816a090a5a3/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-10-22 09:00:46,052 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:00:46,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:00:46,053 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:00:46,054 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:00:46,054 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:00:46,054 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-10-22 09:00:46,054 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-10-22 09:00:46,054 INFO L138 SettingsManager]: * Use old map elimination=false [2019-10-22 09:00:46,054 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-10-22 09:00:46,054 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-10-22 09:00:46,055 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-10-22 09:00:46,055 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:00:46,055 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 09:00:46,055 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:00:46,056 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:00:46,056 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-10-22 09:00:46,056 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-10-22 09:00:46,056 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-10-22 09:00:46,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:00:46,056 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-10-22 09:00:46,056 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:00:46,057 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-10-22 09:00:46,057 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:00:46,057 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:00:46,057 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-10-22 09:00:46,057 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:00:46,057 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:00:46,057 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-10-22 09:00:46,058 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-10-22 09:00:46,058 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/working_dir_1b8f4e9b-2f5b-4ac4-a307-b816a090a5a3/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 -> c3e40038ef85c6e1a2de0a898912241a10300c47 [2019-10-22 09:00:46,081 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:00:46,094 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:00:46,097 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:00:46,098 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:00:46,098 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:00:46,101 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1b8f4e9b-2f5b-4ac4-a307-b816a090a5a3/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/c.02.c [2019-10-22 09:00:46,150 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1b8f4e9b-2f5b-4ac4-a307-b816a090a5a3/bin/uautomizer/data/747f027e2/4a0be1d3cc024203b911cc8b15104d66/FLAG6e4827522 [2019-10-22 09:00:46,525 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:00:46,526 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1b8f4e9b-2f5b-4ac4-a307-b816a090a5a3/sv-benchmarks/c/termination-restricted-15/c.02.c [2019-10-22 09:00:46,530 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1b8f4e9b-2f5b-4ac4-a307-b816a090a5a3/bin/uautomizer/data/747f027e2/4a0be1d3cc024203b911cc8b15104d66/FLAG6e4827522 [2019-10-22 09:00:46,940 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1b8f4e9b-2f5b-4ac4-a307-b816a090a5a3/bin/uautomizer/data/747f027e2/4a0be1d3cc024203b911cc8b15104d66 [2019-10-22 09:00:46,943 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:00:46,945 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:00:46,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:00:46,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:00:46,949 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:00:46,950 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:00:46" (1/1) ... [2019-10-22 09:00:46,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70350657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:46, skipping insertion in model container [2019-10-22 09:00:46,953 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:00:46" (1/1) ... [2019-10-22 09:00:46,959 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:00:46,972 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:00:47,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:00:47,136 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:00:47,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:00:47,222 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:00:47,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:47 WrapperNode [2019-10-22 09:00:47,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:00:47,223 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:00:47,223 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:00:47,223 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:00:47,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:47" (1/1) ... [2019-10-22 09:00:47,234 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:47" (1/1) ... [2019-10-22 09:00:47,249 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:00:47,249 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:00:47,249 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:00:47,250 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:00:47,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:47" (1/1) ... [2019-10-22 09:00:47,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:47" (1/1) ... [2019-10-22 09:00:47,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:47" (1/1) ... [2019-10-22 09:00:47,259 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:47" (1/1) ... [2019-10-22 09:00:47,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:47" (1/1) ... [2019-10-22 09:00:47,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:47" (1/1) ... [2019-10-22 09:00:47,266 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:47" (1/1) ... [2019-10-22 09:00:47,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:00:47,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:00:47,268 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:00:47,268 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:00:47,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1b8f4e9b-2f5b-4ac4-a307-b816a090a5a3/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 [2019-10-22 09:00:47,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:00:47,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:00:47,433 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:00:47,434 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-22 09:00:47,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:47 BoogieIcfgContainer [2019-10-22 09:00:47,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:00:47,435 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-10-22 09:00:47,436 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-10-22 09:00:47,439 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-10-22 09:00:47,440 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 09:00:47,440 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 09:00:46" (1/3) ... [2019-10-22 09:00:47,441 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6c5a743e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 09:00:47, skipping insertion in model container [2019-10-22 09:00:47,441 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 09:00:47,441 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:47" (2/3) ... [2019-10-22 09:00:47,441 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6c5a743e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 09:00:47, skipping insertion in model container [2019-10-22 09:00:47,441 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 09:00:47,442 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:47" (3/3) ... [2019-10-22 09:00:47,443 INFO L371 chiAutomizerObserver]: Analyzing ICFG c.02.c [2019-10-22 09:00:47,485 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-10-22 09:00:47,485 INFO L357 BuchiCegarLoop]: Hoare is false [2019-10-22 09:00:47,486 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-10-22 09:00:47,486 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:00:47,486 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:00:47,486 INFO L361 BuchiCegarLoop]: Difference is false [2019-10-22 09:00:47,486 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:00:47,486 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-10-22 09:00:47,503 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-10-22 09:00:47,524 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 09:00:47,524 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:00:47,524 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:00:47,530 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 09:00:47,530 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 09:00:47,530 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-10-22 09:00:47,530 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-10-22 09:00:47,531 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 09:00:47,532 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:00:47,532 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:00:47,532 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 09:00:47,532 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 09:00:47,539 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 9#L10-2true [2019-10-22 09:00:47,540 INFO L793 eck$LassoCheckResult]: Loop: 9#L10-2true assume !!(main_~x~0 >= 0 && main_~x~0 < 2147483647);main_~x~0 := 1 + main_~x~0;main_~y~0 := 1; 5#L13-2true assume !(main_~x~0 > main_~y~0); 3#L13-3true main_~x~0 := main_~x~0 - 2; 9#L10-2true [2019-10-22 09:00:47,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:47,547 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-10-22 09:00:47,554 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:47,555 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129872586] [2019-10-22 09:00:47,555 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:47,555 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:47,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:47,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:47,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:47,650 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:00:47,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:47,651 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2019-10-22 09:00:47,652 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:47,652 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833807157] [2019-10-22 09:00:47,652 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:47,652 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:47,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:47,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:47,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:47,667 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:00:47,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:47,669 INFO L82 PathProgramCache]: Analyzing trace with hash 963472, now seen corresponding path program 1 times [2019-10-22 09:00:47,669 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:47,669 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276952453] [2019-10-22 09:00:47,670 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:47,670 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:47,670 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:47,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:47,682 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:00:47,754 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:00:47,754 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:00:47,754 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:00:47,754 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:00:47,755 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:00:47,755 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:47,755 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:00:47,755 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:00:47,755 INFO L131 ssoRankerPreferences]: Filename of dumped script: c.02.c_Iteration1_Loop [2019-10-22 09:00:47,755 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:00:47,756 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:00:47,779 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:47,803 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:47,813 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:47,913 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:00:47,916 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1b8f4e9b-2f5b-4ac4-a307-b816a090a5a3/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 09:00:47,928 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:00:47,928 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:47,936 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:00:47,936 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/working_dir_1b8f4e9b-2f5b-4ac4-a307-b816a090a5a3/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 [2019-10-22 09:00:47,942 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:00:47,942 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:00:47,945 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:00:47,946 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/working_dir_1b8f4e9b-2f5b-4ac4-a307-b816a090a5a3/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 [2019-10-22 09:00:47,951 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:00:47,951 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1b8f4e9b-2f5b-4ac4-a307-b816a090a5a3/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 [2019-10-22 09:00:47,960 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:00:47,960 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:00:48,150 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:00:48,152 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:00:48,152 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:00:48,152 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:00:48,152 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:00:48,152 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:00:48,152 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:48,153 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:00:48,153 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:00:48,153 INFO L131 ssoRankerPreferences]: Filename of dumped script: c.02.c_Iteration1_Loop [2019-10-22 09:00:48,153 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:00:48,153 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:00:48,155 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:48,161 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:48,174 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:48,221 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:00:48,226 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:00:48,227 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 [2019-10-22 09:00:48,229 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:00:48,229 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:00:48,229 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:00:48,229 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:00:48,233 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 09:00:48,233 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 09:00:48,240 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:00:48,240 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 [2019-10-22 09:00:48,241 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:00:48,241 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:00:48,242 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:00:48,242 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:00:48,242 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:00:48,243 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:00:48,243 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:00:48,250 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:00:48,255 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 09:00:48,255 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 09:00:48,257 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:00:48,257 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:00:48,257 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:00:48,258 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2019-10-22 09:00:48,261 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:00:48,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:48,292 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:00:48,293 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:48,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:48,301 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 09:00:48,302 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:48,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:48,336 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 [2019-10-22 09:00:48,338 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2019-10-22 09:00:48,383 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 23 states and 35 transitions. Complement of second has 7 states. [2019-10-22 09:00:48,384 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 [2019-10-22 09:00:48,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 09:00:48,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2019-10-22 09:00:48,387 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 3 letters. [2019-10-22 09:00:48,388 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:48,388 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 4 letters. Loop has 3 letters. [2019-10-22 09:00:48,388 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:48,389 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 6 letters. [2019-10-22 09:00:48,389 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:48,390 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 35 transitions. [2019-10-22 09:00:48,392 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-10-22 09:00:48,395 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2019-10-22 09:00:48,396 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-10-22 09:00:48,396 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2019-10-22 09:00:48,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2019-10-22 09:00:48,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:00:48,397 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-10-22 09:00:48,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2019-10-22 09:00:48,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2019-10-22 09:00:48,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-10-22 09:00:48,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2019-10-22 09:00:48,421 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2019-10-22 09:00:48,421 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2019-10-22 09:00:48,421 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-10-22 09:00:48,421 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 9 transitions. [2019-10-22 09:00:48,421 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-10-22 09:00:48,421 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:00:48,422 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:00:48,422 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 09:00:48,422 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-10-22 09:00:48,422 INFO L791 eck$LassoCheckResult]: Stem: 72#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 73#L10-2 assume !!(main_~x~0 >= 0 && main_~x~0 < 2147483647);main_~x~0 := 1 + main_~x~0;main_~y~0 := 1; 74#L13-2 [2019-10-22 09:00:48,422 INFO L793 eck$LassoCheckResult]: Loop: 74#L13-2 assume !!(main_~x~0 > main_~y~0);main_~y~0 := 1 + main_~y~0; 74#L13-2 [2019-10-22 09:00:48,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:48,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-10-22 09:00:48,423 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:48,423 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191747633] [2019-10-22 09:00:48,424 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:48,424 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:48,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:48,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:48,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:48,432 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:00:48,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:48,433 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2019-10-22 09:00:48,433 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:48,433 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309417792] [2019-10-22 09:00:48,433 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:48,433 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:48,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:48,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:48,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:48,439 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:00:48,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:48,440 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2019-10-22 09:00:48,440 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:48,440 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812501722] [2019-10-22 09:00:48,440 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:48,440 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:48,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:48,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:48,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:48,450 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:00:48,459 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:00:48,459 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:00:48,459 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:00:48,460 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:00:48,460 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:00:48,460 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:48,460 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:00:48,460 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:00:48,460 INFO L131 ssoRankerPreferences]: Filename of dumped script: c.02.c_Iteration2_Loop [2019-10-22 09:00:48,460 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:00:48,460 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:00:48,461 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:48,464 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:48,467 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:48,510 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:00:48,510 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1b8f4e9b-2f5b-4ac4-a307-b816a090a5a3/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 [2019-10-22 09:00:48,513 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:00:48,513 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:00:48,516 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:00:48,516 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/working_dir_1b8f4e9b-2f5b-4ac4-a307-b816a090a5a3/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 09:00:48,524 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:00:48,525 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:48,533 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:00:48,533 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/working_dir_1b8f4e9b-2f5b-4ac4-a307-b816a090a5a3/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 [2019-10-22 09:00:48,545 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:00:48,545 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1b8f4e9b-2f5b-4ac4-a307-b816a090a5a3/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 [2019-10-22 09:00:48,561 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:00:48,561 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:00:48,675 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:00:48,676 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:00:48,676 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:00:48,676 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:00:48,676 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:00:48,676 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:00:48,676 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:48,677 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:00:48,677 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:00:48,677 INFO L131 ssoRankerPreferences]: Filename of dumped script: c.02.c_Iteration2_Loop [2019-10-22 09:00:48,677 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:00:48,677 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:00:48,678 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:48,681 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:48,684 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:48,719 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:00:48,720 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:00:48,720 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 [2019-10-22 09:00:48,721 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:00:48,721 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:00:48,721 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:00:48,721 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:00:48,722 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 09:00:48,723 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 09:00:48,727 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:00:48,727 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 [2019-10-22 09:00:48,728 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:00:48,728 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:00:48,728 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:00:48,728 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:00:48,729 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 09:00:48,730 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 09:00:48,735 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:00:48,735 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 [2019-10-22 09:00:48,736 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:00:48,736 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:00:48,736 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:00:48,736 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:00:48,736 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:00:48,737 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:00:48,737 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:00:48,741 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:00:48,745 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 09:00:48,745 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 09:00:48,745 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:00:48,746 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:00:48,746 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:00:48,746 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-10-22 09:00:48,746 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:00:48,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:48,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:48,791 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:00:48,791 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:48,794 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:00:48,795 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:48,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:48,795 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-10-22 09:00:48,795 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5 Second operand 2 states. [2019-10-22 09:00:48,816 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 13 states and 18 transitions. Complement of second has 5 states. [2019-10-22 09:00:48,818 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 [2019-10-22 09:00:48,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-10-22 09:00:48,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-10-22 09:00:48,819 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 1 letters. [2019-10-22 09:00:48,819 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:48,819 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2019-10-22 09:00:48,819 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:48,819 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2019-10-22 09:00:48,819 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:48,820 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 18 transitions. [2019-10-22 09:00:48,820 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-10-22 09:00:48,821 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 9 states and 13 transitions. [2019-10-22 09:00:48,821 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-10-22 09:00:48,821 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2019-10-22 09:00:48,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2019-10-22 09:00:48,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:00:48,821 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2019-10-22 09:00:48,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2019-10-22 09:00:48,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 6. [2019-10-22 09:00:48,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-10-22 09:00:48,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2019-10-22 09:00:48,822 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2019-10-22 09:00:48,822 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2019-10-22 09:00:48,822 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-10-22 09:00:48,822 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2019-10-22 09:00:48,823 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-10-22 09:00:48,824 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:00:48,824 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:00:48,824 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2019-10-22 09:00:48,824 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-10-22 09:00:48,824 INFO L791 eck$LassoCheckResult]: Stem: 120#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 121#L10-2 assume !!(main_~x~0 >= 0 && main_~x~0 < 2147483647);main_~x~0 := 1 + main_~x~0;main_~y~0 := 1; 123#L13-2 assume !(main_~x~0 > main_~y~0); 118#L13-3 main_~x~0 := main_~x~0 - 2; 119#L10-2 assume !!(main_~x~0 >= 0 && main_~x~0 < 2147483647);main_~x~0 := 1 + main_~x~0;main_~y~0 := 1; 122#L13-2 [2019-10-22 09:00:48,825 INFO L793 eck$LassoCheckResult]: Loop: 122#L13-2 assume !!(main_~x~0 > main_~y~0);main_~y~0 := 1 + main_~y~0; 122#L13-2 [2019-10-22 09:00:48,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:48,825 INFO L82 PathProgramCache]: Analyzing trace with hash 29867642, now seen corresponding path program 2 times [2019-10-22 09:00:48,825 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:48,825 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363845760] [2019-10-22 09:00:48,825 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:48,825 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:48,825 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:48,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:48,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:48,864 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363845760] [2019-10-22 09:00:48,865 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:48,865 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 09:00:48,865 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688561505] [2019-10-22 09:00:48,867 INFO L796 eck$LassoCheckResult]: stem already infeasible [2019-10-22 09:00:48,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:48,867 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2019-10-22 09:00:48,867 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:48,867 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783907711] [2019-10-22 09:00:48,868 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:48,868 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:48,868 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:48,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:48,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:48,874 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:00:48,883 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:00:48,883 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:00:48,883 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:00:48,883 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:00:48,884 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:00:48,884 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:48,884 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:00:48,884 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:00:48,884 INFO L131 ssoRankerPreferences]: Filename of dumped script: c.02.c_Iteration3_Loop [2019-10-22 09:00:48,884 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:00:48,884 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:00:48,885 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:48,888 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:48,893 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:48,933 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:00:48,933 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1b8f4e9b-2f5b-4ac4-a307-b816a090a5a3/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 09:00:48,940 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:00:48,940 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:48,945 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:00:48,945 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/working_dir_1b8f4e9b-2f5b-4ac4-a307-b816a090a5a3/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 09:00:48,951 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:00:48,951 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1b8f4e9b-2f5b-4ac4-a307-b816a090a5a3/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 09:00:48,962 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:00:48,962 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:49,119 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:00:49,122 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:00:49,122 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:00:49,122 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:00:49,122 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:00:49,122 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:00:49,122 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:49,122 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:00:49,122 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:00:49,122 INFO L131 ssoRankerPreferences]: Filename of dumped script: c.02.c_Iteration3_Loop [2019-10-22 09:00:49,123 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:00:49,123 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:00:49,124 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:49,135 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:49,141 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:49,181 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:00:49,181 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:00:49,181 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 09:00:49,182 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:00:49,182 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:00:49,182 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:00:49,182 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:00:49,184 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 09:00:49,184 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 09:00:49,193 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:00:49,194 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 [2019-10-22 09:00:49,195 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:00:49,201 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:00:49,201 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:00:49,202 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:00:49,202 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:00:49,202 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:00:49,202 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:00:49,206 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:00:49,214 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-10-22 09:00:49,217 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 09:00:49,218 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:00:49,218 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:00:49,218 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:00:49,218 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-10-22 09:00:49,219 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:00:49,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:49,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:00:49,246 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:49,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:49,251 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:00:49,252 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:49,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:49,252 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-10-22 09:00:49,253 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-10-22 09:00:49,268 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 11 states and 15 transitions. Complement of second has 5 states. [2019-10-22 09:00:49,269 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 [2019-10-22 09:00:49,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-10-22 09:00:49,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-10-22 09:00:49,269 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 1 letters. [2019-10-22 09:00:49,270 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:49,270 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-10-22 09:00:49,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:49,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:49,290 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:00:49,291 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:49,298 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:00:49,298 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:49,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:49,298 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2019-10-22 09:00:49,299 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-10-22 09:00:49,308 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 11 states and 15 transitions. Complement of second has 5 states. [2019-10-22 09:00:49,309 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 [2019-10-22 09:00:49,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-10-22 09:00:49,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-10-22 09:00:49,310 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 1 letters. [2019-10-22 09:00:49,310 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:49,310 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-10-22 09:00:49,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:49,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:49,334 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:00:49,334 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:49,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:49,339 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:00:49,340 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:49,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:49,340 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 1 loop predicates [2019-10-22 09:00:49,340 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-10-22 09:00:49,357 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 9 states and 11 transitions. Complement of second has 4 states. [2019-10-22 09:00:49,358 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 [2019-10-22 09:00:49,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-10-22 09:00:49,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-10-22 09:00:49,359 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 1 letters. [2019-10-22 09:00:49,359 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:49,359 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 1 letters. [2019-10-22 09:00:49,360 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:49,360 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2019-10-22 09:00:49,360 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:49,360 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 11 transitions. [2019-10-22 09:00:49,361 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 09:00:49,361 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2019-10-22 09:00:49,361 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 09:00:49,361 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 09:00:49,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 09:00:49,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 09:00:49,361 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:00:49,361 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:00:49,361 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:49,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:00:49,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:00:49,368 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2019-10-22 09:00:49,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:49,371 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-10-22 09:00:49,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 09:00:49,371 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-10-22 09:00:49,371 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 09:00:49,371 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 09:00:49,371 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 09:00:49,371 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 09:00:49,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 09:00:49,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 09:00:49,372 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:00:49,372 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:00:49,372 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:00:49,372 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-10-22 09:00:49,372 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-10-22 09:00:49,372 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 09:00:49,372 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-10-22 09:00:49,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 09:00:49 BoogieIcfgContainer [2019-10-22 09:00:49,378 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-10-22 09:00:49,379 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:00:49,379 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:00:49,379 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:00:49,380 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:47" (3/4) ... [2019-10-22 09:00:49,383 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 09:00:49,383 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:00:49,385 INFO L168 Benchmark]: Toolchain (without parser) took 2439.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 944.5 MB in the beginning and 927.6 MB in the end (delta: 16.9 MB). Peak memory consumption was 154.3 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:49,386 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:00:49,387 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -190.3 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:49,388 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.23 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. [2019-10-22 09:00:49,389 INFO L168 Benchmark]: Boogie Preprocessor took 18.31 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. [2019-10-22 09:00:49,390 INFO L168 Benchmark]: RCFGBuilder took 167.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:49,391 INFO L168 Benchmark]: BuchiAutomizer took 1943.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 927.6 MB in the end (delta: 186.2 MB). Peak memory consumption was 186.2 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:49,394 INFO L168 Benchmark]: Witness Printer took 4.37 ms. Allocated memory is still 1.2 GB. Free memory is still 927.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:00:49,396 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 276.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -190.3 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.23 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.31 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 167.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1943.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 927.6 MB in the end (delta: 186.2 MB). Peak memory consumption was 186.2 MB. Max. memory is 11.5 GB. * Witness Printer took 4.37 ms. Allocated memory is still 1.2 GB. Free memory is still 927.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * x + 1 and consists of 5 locations. One deterministic module has affine ranking function -1 * y + x and consists of 3 locations. One nondeterministic module has affine ranking function -1 * y + x and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.9s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 1.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 6 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 15 SDtfs, 18 SDslu, 6 SDs, 0 SdLazy, 42 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax202 hnf100 lsp50 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq158 hnf93 smp89 dnf100 smp100 tf112 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 13ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...