./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 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_919c7fc3-331e-460c-85cf-d1be3aeac06d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_919c7fc3-331e-460c-85cf-d1be3aeac06d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_919c7fc3-331e-460c-85cf-d1be3aeac06d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_919c7fc3-331e-460c-85cf-d1be3aeac06d/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/c.02.c -s /tmp/vcloud-vcloud-master/worker/run_dir_919c7fc3-331e-460c-85cf-d1be3aeac06d/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_919c7fc3-331e-460c-85cf-d1be3aeac06d/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 0.1.24-6b5699a [2019-11-25 08:56:26,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:56:26,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:56:26,314 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:56:26,314 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:56:26,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:56:26,317 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:56:26,325 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:56:26,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:56:26,333 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:56:26,334 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:56:26,335 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:56:26,336 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:56:26,338 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:56:26,339 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:56:26,339 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:56:26,340 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:56:26,341 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:56:26,343 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:56:26,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:56:26,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:56:26,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:56:26,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:56:26,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:56:26,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:56:26,359 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:56:26,360 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:56:26,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:56:26,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:56:26,362 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:56:26,363 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:56:26,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:56:26,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:56:26,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:56:26,365 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:56:26,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:56:26,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:56:26,367 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:56:26,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:56:26,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:56:26,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:56:26,370 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_919c7fc3-331e-460c-85cf-d1be3aeac06d/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-25 08:56:26,395 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:56:26,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:56:26,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:56:26,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:56:26,406 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:56:26,407 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-25 08:56:26,407 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-25 08:56:26,407 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-25 08:56:26,407 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-25 08:56:26,407 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-25 08:56:26,408 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-25 08:56:26,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:56:26,408 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:56:26,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:56:26,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:56:26,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-25 08:56:26,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-25 08:56:26,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-25 08:56:26,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:56:26,410 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-25 08:56:26,410 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:56:26,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-25 08:56:26,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:56:26,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:56:26,411 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-25 08:56:26,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:56:26,412 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:56:26,412 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-25 08:56:26,413 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-25 08:56:26,414 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_919c7fc3-331e-460c-85cf-d1be3aeac06d/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 [2019-11-25 08:56:26,572 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:56:26,585 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:56:26,588 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:56:26,589 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:56:26,590 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:56:26,591 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_919c7fc3-331e-460c-85cf-d1be3aeac06d/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/c.02.c [2019-11-25 08:56:26,650 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_919c7fc3-331e-460c-85cf-d1be3aeac06d/bin/uautomizer/data/1c71b8c57/ce65a1800fc44d85843b4afe0812fd21/FLAGd0a2ef48e [2019-11-25 08:56:27,014 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:56:27,015 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_919c7fc3-331e-460c-85cf-d1be3aeac06d/sv-benchmarks/c/termination-restricted-15/c.02.c [2019-11-25 08:56:27,019 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_919c7fc3-331e-460c-85cf-d1be3aeac06d/bin/uautomizer/data/1c71b8c57/ce65a1800fc44d85843b4afe0812fd21/FLAGd0a2ef48e [2019-11-25 08:56:27,443 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_919c7fc3-331e-460c-85cf-d1be3aeac06d/bin/uautomizer/data/1c71b8c57/ce65a1800fc44d85843b4afe0812fd21 [2019-11-25 08:56:27,446 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:56:27,447 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:56:27,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:56:27,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:56:27,451 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:56:27,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:56:27" (1/1) ... [2019-11-25 08:56:27,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f3bb6fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:27, skipping insertion in model container [2019-11-25 08:56:27,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:56:27" (1/1) ... [2019-11-25 08:56:27,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:56:27,484 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:56:27,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:56:27,691 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:56:27,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:56:27,781 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:56:27,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:27 WrapperNode [2019-11-25 08:56:27,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:56:27,782 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:56:27,782 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:56:27,782 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:56:27,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:27" (1/1) ... [2019-11-25 08:56:27,793 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:27" (1/1) ... [2019-11-25 08:56:27,807 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:56:27,807 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:56:27,807 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:56:27,807 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:56:27,813 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:27" (1/1) ... [2019-11-25 08:56:27,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:27" (1/1) ... [2019-11-25 08:56:27,814 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:27" (1/1) ... [2019-11-25 08:56:27,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:27" (1/1) ... [2019-11-25 08:56:27,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:27" (1/1) ... [2019-11-25 08:56:27,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:27" (1/1) ... [2019-11-25 08:56:27,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:27" (1/1) ... [2019-11-25 08:56:27,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:56:27,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:56:27,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:56:27,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:56:27,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_919c7fc3-331e-460c-85cf-d1be3aeac06d/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:27,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:56:27,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:56:28,001 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:56:28,001 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-25 08:56:28,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:28 BoogieIcfgContainer [2019-11-25 08:56:28,002 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:56:28,002 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-25 08:56:28,003 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-25 08:56:28,006 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-25 08:56:28,006 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:56:28,006 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 25.11 08:56:27" (1/3) ... [2019-11-25 08:56:28,007 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@747a5a0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:56:28, skipping insertion in model container [2019-11-25 08:56:28,008 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:56:28,010 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:27" (2/3) ... [2019-11-25 08:56:28,010 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@747a5a0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:56:28, skipping insertion in model container [2019-11-25 08:56:28,011 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:56:28,011 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:28" (3/3) ... [2019-11-25 08:56:28,014 INFO L371 chiAutomizerObserver]: Analyzing ICFG c.02.c [2019-11-25 08:56:28,064 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-25 08:56:28,064 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-25 08:56:28,064 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-25 08:56:28,065 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:56:28,065 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:56:28,065 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-25 08:56:28,065 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:56:28,066 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-25 08:56:28,079 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-25 08:56:28,103 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:56:28,103 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:56:28,103 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:56:28,109 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-25 08:56:28,109 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:56:28,109 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-25 08:56:28,110 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-25 08:56:28,111 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:56:28,111 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:56:28,111 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:56:28,112 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-25 08:56:28,112 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:56:28,119 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 9#L10-2true [2019-11-25 08:56:28,119 INFO L796 eck$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 [2019-11-25 08:56:28,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:28,128 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-25 08:56:28,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:28,137 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793885620] [2019-11-25 08:56:28,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:28,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:28,240 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:28,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:28,242 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2019-11-25 08:56:28,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:28,243 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338705096] [2019-11-25 08:56:28,243 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:28,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:28,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:28,277 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:28,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:28,279 INFO L82 PathProgramCache]: Analyzing trace with hash 963472, now seen corresponding path program 1 times [2019-11-25 08:56:28,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:28,280 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158283629] [2019-11-25 08:56:28,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:28,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:28,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:28,306 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:28,440 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:56:28,441 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:56:28,441 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:56:28,441 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:56:28,441 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:56:28,441 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:28,441 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:56:28,441 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:56:28,442 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.02.c_Iteration1_Loop [2019-11-25 08:56:28,442 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:56:28,442 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:56:28,481 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:28,489 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:28,494 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:28,615 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:56:28,616 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_919c7fc3-331e-460c-85cf-d1be3aeac06d/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:28,623 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:56:28,623 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 [2019-11-25 08:56:28,633 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:56:28,633 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_919c7fc3-331e-460c-85cf-d1be3aeac06d/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:28,643 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:56:28,644 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:56:28,648 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:56:28,648 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_919c7fc3-331e-460c-85cf-d1be3aeac06d/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:28,653 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:56:28,653 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_919c7fc3-331e-460c-85cf-d1be3aeac06d/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:28,662 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:56:28,662 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:56:28,902 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:56:28,904 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:56:28,904 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:56:28,904 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:56:28,904 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:56:28,904 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:56:28,904 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:28,904 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:56:28,904 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:56:28,905 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.02.c_Iteration1_Loop [2019-11-25 08:56:28,905 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:56:28,905 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:56:28,906 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:28,910 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:28,925 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:29,004 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:56:29,008 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_919c7fc3-331e-460c-85cf-d1be3aeac06d/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:29,014 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:56:29,016 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:29,016 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:29,016 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:29,016 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:29,021 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:56:29,021 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:56:29,026 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_919c7fc3-331e-460c-85cf-d1be3aeac06d/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:29,034 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:56:29,038 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:29,038 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:56:29,038 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:29,038 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:29,039 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:29,040 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:56:29,041 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:56:29,044 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:56:29,052 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:56:29,052 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_919c7fc3-331e-460c-85cf-d1be3aeac06d/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 [2019-11-25 08:56:29,059 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:56:29,059 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:56:29,059 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:56:29,060 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2019-11-25 08:56:29,064 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:56:29,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:29,107 INFO L255 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:56:29,108 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:29,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:29,118 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:56:29,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:29,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:29,166 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-25 08:56:29,167 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2019-11-25 08:56:29,219 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. [2019-11-25 08:56:29,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-25 08:56:29,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:56:29,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2019-11-25 08:56:29,224 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 3 letters. [2019-11-25 08:56:29,225 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:29,225 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 4 letters. Loop has 3 letters. [2019-11-25 08:56:29,225 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:29,225 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 6 letters. [2019-11-25 08:56:29,225 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:29,226 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 35 transitions. [2019-11-25 08:56:29,229 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-25 08:56:29,233 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2019-11-25 08:56:29,234 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-11-25 08:56:29,234 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2019-11-25 08:56:29,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2019-11-25 08:56:29,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:56:29,235 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-25 08:56:29,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2019-11-25 08:56:29,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2019-11-25 08:56:29,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-25 08:56:29,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2019-11-25 08:56:29,260 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2019-11-25 08:56:29,260 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2019-11-25 08:56:29,261 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-25 08:56:29,261 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 9 transitions. [2019-11-25 08:56:29,261 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-25 08:56:29,261 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:56:29,262 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:56:29,262 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-25 08:56:29,262 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-25 08:56:29,262 INFO L794 eck$LassoCheckResult]: Stem: 72#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 73#L10-2 assume !!(main_~x~0 >= 0 && main_~x~0 < 2147483647);main_~x~0 := 1 + main_~x~0;main_~y~0 := 1; 74#L13-2 [2019-11-25 08:56:29,263 INFO L796 eck$LassoCheckResult]: Loop: 74#L13-2 assume !!(main_~x~0 > main_~y~0);main_~y~0 := 1 + main_~y~0; 74#L13-2 [2019-11-25 08:56:29,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:29,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-11-25 08:56:29,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:29,263 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125666116] [2019-11-25 08:56:29,264 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:29,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:29,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:29,272 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:29,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:29,273 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2019-11-25 08:56:29,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:29,273 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104132873] [2019-11-25 08:56:29,274 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:29,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:29,279 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:29,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:29,280 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2019-11-25 08:56:29,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:29,280 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122618312] [2019-11-25 08:56:29,281 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:29,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:29,297 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:29,320 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:56:29,320 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:56:29,320 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:56:29,320 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:56:29,321 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:56:29,321 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:29,321 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:56:29,321 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:56:29,321 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.02.c_Iteration2_Loop [2019-11-25 08:56:29,321 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:56:29,321 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:56:29,322 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:29,337 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:29,341 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:29,395 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:56:29,395 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_919c7fc3-331e-460c-85cf-d1be3aeac06d/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:29,402 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:56:29,402 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:29,408 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:56:29,409 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_919c7fc3-331e-460c-85cf-d1be3aeac06d/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:29,422 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:56:29,423 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:56:29,428 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:56:29,428 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_919c7fc3-331e-460c-85cf-d1be3aeac06d/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:29,443 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:56:29,443 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_919c7fc3-331e-460c-85cf-d1be3aeac06d/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:29,453 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:56:29,453 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:56:29,590 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:56:29,592 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:56:29,592 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:56:29,592 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:56:29,592 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:56:29,592 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:56:29,592 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:29,592 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:56:29,592 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:56:29,592 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.02.c_Iteration2_Loop [2019-11-25 08:56:29,592 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:56:29,593 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:56:29,593 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:29,612 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:29,623 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:29,674 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:56:29,674 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_919c7fc3-331e-460c-85cf-d1be3aeac06d/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:29,691 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:56:29,693 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:29,693 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:29,693 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:29,693 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:29,697 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:56:29,697 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:29,703 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_919c7fc3-331e-460c-85cf-d1be3aeac06d/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:29,718 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:56:29,720 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:29,720 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:29,721 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:29,721 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:29,727 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:56:29,728 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:56:29,737 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_919c7fc3-331e-460c-85cf-d1be3aeac06d/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:29,754 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:56:29,763 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:29,763 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:56:29,763 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:29,763 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:29,763 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:29,765 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:56:29,765 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:56:29,777 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:56:29,781 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:56:29,781 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_919c7fc3-331e-460c-85cf-d1be3aeac06d/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:29,794 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:56:29,794 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:56:29,795 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:56:29,795 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 [] [2019-11-25 08:56:29,797 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:29,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:29,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:29,823 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:56:29,823 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:29,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:29,827 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:56:29,828 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:29,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:29,828 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 [2019-11-25 08:56:29,829 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5 Second operand 2 states. [2019-11-25 08:56:29,852 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. [2019-11-25 08:56:29,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-25 08:56:29,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-25 08:56:29,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-11-25 08:56:29,855 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 1 letters. [2019-11-25 08:56:29,855 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:29,855 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2019-11-25 08:56:29,855 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:29,855 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2019-11-25 08:56:29,855 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:29,855 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 18 transitions. [2019-11-25 08:56:29,856 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-25 08:56:29,857 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 9 states and 13 transitions. [2019-11-25 08:56:29,857 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-11-25 08:56:29,857 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2019-11-25 08:56:29,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2019-11-25 08:56:29,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:56:29,857 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2019-11-25 08:56:29,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2019-11-25 08:56:29,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 6. [2019-11-25 08:56:29,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-25 08:56:29,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2019-11-25 08:56:29,859 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2019-11-25 08:56:29,859 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2019-11-25 08:56:29,859 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-25 08:56:29,859 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2019-11-25 08:56:29,859 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-25 08:56:29,861 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:56:29,861 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:56:29,861 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2019-11-25 08:56:29,862 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-25 08:56:29,862 INFO L794 eck$LassoCheckResult]: Stem: 120#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 121#L10-2 assume !!(main_~x~0 >= 0 && main_~x~0 < 2147483647);main_~x~0 := 1 + main_~x~0;main_~y~0 := 1; 123#L13-2 assume !(main_~x~0 > main_~y~0); 118#L13-3 main_~x~0 := main_~x~0 - 2; 119#L10-2 assume !!(main_~x~0 >= 0 && main_~x~0 < 2147483647);main_~x~0 := 1 + main_~x~0;main_~y~0 := 1; 122#L13-2 [2019-11-25 08:56:29,862 INFO L796 eck$LassoCheckResult]: Loop: 122#L13-2 assume !!(main_~x~0 > main_~y~0);main_~y~0 := 1 + main_~y~0; 122#L13-2 [2019-11-25 08:56:29,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:29,863 INFO L82 PathProgramCache]: Analyzing trace with hash 29867642, now seen corresponding path program 2 times [2019-11-25 08:56:29,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:29,864 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125792700] [2019-11-25 08:56:29,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:29,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:29,944 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125792700] [2019-11-25 08:56:29,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:29,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:56:29,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813337975] [2019-11-25 08:56:29,949 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-25 08:56:29,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:29,949 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2019-11-25 08:56:29,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:29,950 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835530719] [2019-11-25 08:56:29,950 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:29,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:29,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:29,963 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:29,975 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:56:29,975 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:56:29,975 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:56:29,975 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:56:29,975 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:56:29,975 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:29,975 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:56:29,976 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:56:29,976 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.02.c_Iteration3_Loop [2019-11-25 08:56:29,976 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:56:29,976 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:56:29,977 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:29,982 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:29,990 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:30,055 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:56:30,055 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_919c7fc3-331e-460c-85cf-d1be3aeac06d/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:30,071 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:56:30,071 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:30,075 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:56:30,076 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_919c7fc3-331e-460c-85cf-d1be3aeac06d/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:30,093 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:56:30,093 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_919c7fc3-331e-460c-85cf-d1be3aeac06d/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:30,110 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:56:30,110 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:56:30,277 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:56:30,278 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:56:30,278 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:56:30,278 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:56:30,278 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:56:30,279 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:56:30,279 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:30,279 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:56:30,279 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:56:30,279 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.02.c_Iteration3_Loop [2019-11-25 08:56:30,279 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:56:30,279 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:56:30,280 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:30,287 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:30,295 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:30,342 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:56:30,343 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_919c7fc3-331e-460c-85cf-d1be3aeac06d/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:30,368 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:56:30,370 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:30,370 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:30,370 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:30,370 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:30,375 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:56:30,375 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:30,384 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_919c7fc3-331e-460c-85cf-d1be3aeac06d/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:30,403 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:56:30,404 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:30,405 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:56:30,405 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:30,405 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:30,405 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:30,408 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:56:30,409 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:30,412 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:56:30,422 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-25 08:56:30,422 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_919c7fc3-331e-460c-85cf-d1be3aeac06d/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:30,439 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:56:30,439 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:56:30,439 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:56:30,439 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 [] [2019-11-25 08:56:30,442 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:30,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:30,478 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:56:30,479 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:30,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:30,484 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:56:30,484 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:30,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:30,485 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 [2019-11-25 08:56:30,485 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-11-25 08:56:30,499 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. [2019-11-25 08:56:30,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-25 08:56:30,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-25 08:56:30,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-11-25 08:56:30,500 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 1 letters. [2019-11-25 08:56:30,501 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:30,501 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:56:30,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:30,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:30,537 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:56:30,537 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:30,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:30,542 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:56:30,542 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:30,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:30,543 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 [2019-11-25 08:56:30,543 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-11-25 08:56:30,552 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. [2019-11-25 08:56:30,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-25 08:56:30,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-25 08:56:30,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-11-25 08:56:30,554 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 1 letters. [2019-11-25 08:56:30,554 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:30,555 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:56:30,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:30,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:30,582 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:56:30,583 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:30,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:30,588 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:56:30,588 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:30,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:30,589 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 [2019-11-25 08:56:30,589 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-11-25 08:56:30,612 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. [2019-11-25 08:56:30,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-25 08:56:30,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-25 08:56:30,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-11-25 08:56:30,615 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 1 letters. [2019-11-25 08:56:30,615 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:30,615 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 1 letters. [2019-11-25 08:56:30,615 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:30,615 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-25 08:56:30,615 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:30,616 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 11 transitions. [2019-11-25 08:56:30,616 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:56:30,616 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2019-11-25 08:56:30,616 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-25 08:56:30,616 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-25 08:56:30,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-25 08:56:30,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:56:30,617 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:56:30,617 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:56:30,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:30,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:56:30,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:56:30,620 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2019-11-25 08:56:30,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:30,622 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-11-25 08:56:30,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:56:30,622 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-11-25 08:56:30,623 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:56:30,623 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-11-25 08:56:30,623 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-25 08:56:30,623 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-25 08:56:30,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-25 08:56:30,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:56:30,623 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:56:30,624 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:56:30,624 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:56:30,624 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-25 08:56:30,624 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:56:30,624 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:56:30,624 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-25 08:56:30,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 25.11 08:56:30 BoogieIcfgContainer [2019-11-25 08:56:30,630 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-25 08:56:30,630 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:56:30,631 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:56:30,631 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:56:30,631 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:28" (3/4) ... [2019-11-25 08:56:30,634 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-25 08:56:30,635 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:56:30,637 INFO L168 Benchmark]: Toolchain (without parser) took 3189.02 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 948.7 MB in the beginning and 831.5 MB in the end (delta: 117.2 MB). Peak memory consumption was 229.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:30,637 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:56:30,638 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.15 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 948.7 MB in the beginning and 1.1 GB in the end (delta: -158.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:30,638 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.58 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:56:30,639 INFO L168 Benchmark]: Boogie Preprocessor took 13.23 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:56:30,639 INFO L168 Benchmark]: RCFGBuilder took 181.82 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:30,640 INFO L168 Benchmark]: BuchiAutomizer took 2627.71 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 838.4 MB in the end (delta: 250.6 MB). Peak memory consumption was 250.6 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:30,641 INFO L168 Benchmark]: Witness Printer took 4.26 ms. Allocated memory is still 1.1 GB. Free memory was 838.4 MB in the beginning and 831.5 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:30,643 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 334.15 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 948.7 MB in the beginning and 1.1 GB in the end (delta: -158.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 24.58 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.23 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 181.82 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2627.71 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 838.4 MB in the end (delta: 250.6 MB). Peak memory consumption was 250.6 MB. Max. memory is 11.5 GB. * Witness Printer took 4.26 ms. Allocated memory is still 1.1 GB. Free memory was 838.4 MB in the beginning and 831.5 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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 2.5s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 2.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. 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: 16ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...