./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-wise.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8cf4fb04-7a70-4364-9909-e6bf52f8831d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_8cf4fb04-7a70-4364-9909-e6bf52f8831d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8cf4fb04-7a70-4364-9909-e6bf52f8831d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8cf4fb04-7a70-4364-9909-e6bf52f8831d/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-wise.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8cf4fb04-7a70-4364-9909-e6bf52f8831d/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8cf4fb04-7a70-4364-9909-e6bf52f8831d/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 4c761fb15c9d367876fc9f1553874e9680fa1668 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 22:52:49,181 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 22:52:49,182 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 22:52:49,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 22:52:49,198 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 22:52:49,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 22:52:49,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 22:52:49,210 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 22:52:49,214 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 22:52:49,218 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 22:52:49,219 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 22:52:49,221 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 22:52:49,222 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 22:52:49,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 22:52:49,224 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 22:52:49,225 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 22:52:49,226 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 22:52:49,227 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 22:52:49,229 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 22:52:49,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 22:52:49,235 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 22:52:49,236 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 22:52:49,237 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 22:52:49,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 22:52:49,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 22:52:49,240 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 22:52:49,240 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 22:52:49,241 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 22:52:49,242 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 22:52:49,242 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 22:52:49,243 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 22:52:49,243 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 22:52:49,244 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 22:52:49,244 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 22:52:49,246 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 22:52:49,246 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 22:52:49,247 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 22:52:49,247 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 22:52:49,247 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 22:52:49,248 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 22:52:49,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 22:52:49,249 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8cf4fb04-7a70-4364-9909-e6bf52f8831d/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-15 22:52:49,276 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 22:52:49,276 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 22:52:49,277 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 22:52:49,277 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 22:52:49,277 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 22:52:49,278 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-15 22:52:49,278 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-15 22:52:49,278 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-15 22:52:49,278 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-15 22:52:49,278 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-15 22:52:49,279 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-15 22:52:49,279 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 22:52:49,279 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 22:52:49,279 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 22:52:49,279 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 22:52:49,280 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-15 22:52:49,280 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-15 22:52:49,280 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-15 22:52:49,280 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 22:52:49,280 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-15 22:52:49,281 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 22:52:49,281 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-15 22:52:49,281 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 22:52:49,281 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 22:52:49,281 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-15 22:52:49,282 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 22:52:49,282 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 22:52:49,282 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-15 22:52:49,283 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-15 22:52:49,283 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_8cf4fb04-7a70-4364-9909-e6bf52f8831d/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 -> 4c761fb15c9d367876fc9f1553874e9680fa1668 [2019-11-15 22:52:49,327 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 22:52:49,339 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 22:52:49,341 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 22:52:49,342 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 22:52:49,342 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 22:52:49,343 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8cf4fb04-7a70-4364-9909-e6bf52f8831d/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-wise.c [2019-11-15 22:52:49,413 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8cf4fb04-7a70-4364-9909-e6bf52f8831d/bin/uautomizer/data/32c176821/9f03fbfc113c48949f55679d6e13fd1d/FLAG19fdc1cd8 [2019-11-15 22:52:49,804 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 22:52:49,805 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8cf4fb04-7a70-4364-9909-e6bf52f8831d/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-wise.c [2019-11-15 22:52:49,810 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8cf4fb04-7a70-4364-9909-e6bf52f8831d/bin/uautomizer/data/32c176821/9f03fbfc113c48949f55679d6e13fd1d/FLAG19fdc1cd8 [2019-11-15 22:52:50,233 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8cf4fb04-7a70-4364-9909-e6bf52f8831d/bin/uautomizer/data/32c176821/9f03fbfc113c48949f55679d6e13fd1d [2019-11-15 22:52:50,235 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 22:52:50,236 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 22:52:50,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 22:52:50,237 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 22:52:50,240 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 22:52:50,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:52:50" (1/1) ... [2019-11-15 22:52:50,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b1fe205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:52:50, skipping insertion in model container [2019-11-15 22:52:50,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:52:50" (1/1) ... [2019-11-15 22:52:50,252 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 22:52:50,264 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 22:52:50,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:52:50,396 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 22:52:50,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:52:50,477 INFO L192 MainTranslator]: Completed translation [2019-11-15 22:52:50,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:52:50 WrapperNode [2019-11-15 22:52:50,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 22:52:50,478 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 22:52:50,478 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 22:52:50,478 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 22:52:50,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:52:50" (1/1) ... [2019-11-15 22:52:50,491 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:52:50" (1/1) ... [2019-11-15 22:52:50,507 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 22:52:50,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 22:52:50,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 22:52:50,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 22:52:50,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:52:50" (1/1) ... [2019-11-15 22:52:50,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:52:50" (1/1) ... [2019-11-15 22:52:50,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:52:50" (1/1) ... [2019-11-15 22:52:50,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:52:50" (1/1) ... [2019-11-15 22:52:50,519 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:52:50" (1/1) ... [2019-11-15 22:52:50,522 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:52:50" (1/1) ... [2019-11-15 22:52:50,523 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:52:50" (1/1) ... [2019-11-15 22:52:50,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 22:52:50,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 22:52:50,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 22:52:50,524 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 22:52:50,524 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:52:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf4fb04-7a70-4364-9909-e6bf52f8831d/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 [2019-11-15 22:52:50,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 22:52:50,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 22:52:50,712 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 22:52:50,713 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-15 22:52:50,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:52:50 BoogieIcfgContainer [2019-11-15 22:52:50,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 22:52:50,714 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-15 22:52:50,715 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-15 22:52:50,717 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-15 22:52:50,718 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 22:52:50,718 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.11 10:52:50" (1/3) ... [2019-11-15 22:52:50,719 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5e79f1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 10:52:50, skipping insertion in model container [2019-11-15 22:52:50,719 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 22:52:50,719 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:52:50" (2/3) ... [2019-11-15 22:52:50,720 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5e79f1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 10:52:50, skipping insertion in model container [2019-11-15 22:52:50,720 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 22:52:50,720 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:52:50" (3/3) ... [2019-11-15 22:52:50,722 INFO L371 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-wise.c [2019-11-15 22:52:50,767 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-15 22:52:50,768 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-15 22:52:50,768 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-15 22:52:50,768 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 22:52:50,768 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 22:52:50,768 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-15 22:52:50,768 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 22:52:50,768 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-15 22:52:50,781 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-15 22:52:50,800 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 22:52:50,800 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 22:52:50,800 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 22:52:50,805 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-15 22:52:50,805 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-15 22:52:50,805 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-15 22:52:50,805 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-15 22:52:50,806 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 22:52:50,806 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 22:52:50,806 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 22:52:50,807 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-15 22:52:50,807 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-15 22:52:50,812 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 6#L17true assume main_~x~0 >= 0 && main_~y~0 >= 0; 7#L19-2true [2019-11-15 22:52:50,813 INFO L793 eck$LassoCheckResult]: Loop: 7#L19-2true assume !!(main_~x~0 - main_~y~0 > 2 || main_~y~0 - main_~x~0 > 2); 9#L19true assume main_~x~0 < main_~y~0;main_~x~0 := 1 + main_~x~0; 7#L19-2true [2019-11-15 22:52:50,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:52:50,818 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2019-11-15 22:52:50,825 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:52:50,826 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314778593] [2019-11-15 22:52:50,826 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:50,826 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:50,826 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:52:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:52:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:52:50,906 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 22:52:50,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:52:50,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 1 times [2019-11-15 22:52:50,907 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:52:50,907 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497678956] [2019-11-15 22:52:50,908 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:50,908 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:50,908 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:52:50,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:52:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:52:50,921 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 22:52:50,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:52:50,923 INFO L82 PathProgramCache]: Analyzing trace with hash 957575, now seen corresponding path program 1 times [2019-11-15 22:52:50,923 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:52:50,923 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894178437] [2019-11-15 22:52:50,924 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:50,924 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:50,924 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:52:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:52:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:52:50,937 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 22:52:51,006 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 22:52:51,006 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 22:52:51,006 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 22:52:51,007 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 22:52:51,007 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 22:52:51,007 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 22:52:51,007 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 22:52:51,007 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 22:52:51,007 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wise.c_Iteration1_Loop [2019-11-15 22:52:51,007 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 22:52:51,008 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 22:52:51,028 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:52:51,045 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:52:51,057 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:52:51,155 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 22:52:51,156 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf4fb04-7a70-4364-9909-e6bf52f8831d/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 22:52:51,162 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 22:52:51,163 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 22:52:51,170 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 22:52:51,170 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_8cf4fb04-7a70-4364-9909-e6bf52f8831d/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 [2019-11-15 22:52:51,178 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 22:52:51,178 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 22:52:51,182 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 22:52:51,182 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_8cf4fb04-7a70-4364-9909-e6bf52f8831d/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 22:52:51,200 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 22:52:51,201 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf4fb04-7a70-4364-9909-e6bf52f8831d/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 [2019-11-15 22:52:51,210 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 22:52:51,210 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 22:52:51,344 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 22:52:51,346 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 22:52:51,346 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 22:52:51,346 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 22:52:51,346 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 22:52:51,346 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 22:52:51,346 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 22:52:51,346 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 22:52:51,347 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 22:52:51,347 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wise.c_Iteration1_Loop [2019-11-15 22:52:51,347 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 22:52:51,347 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 22:52:51,348 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:52:51,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:52:51,365 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:52:51,436 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 22:52:51,441 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 22:52:51,442 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 [2019-11-15 22:52:51,444 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 22:52:51,444 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 22:52:51,444 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 22:52:51,444 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 22:52:51,450 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 22:52:51,450 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 22:52:51,457 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 22:52:51,457 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 [2019-11-15 22:52:51,458 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 22:52:51,459 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 22:52:51,459 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 22:52:51,459 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 22:52:51,461 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 22:52:51,462 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 22:52:51,469 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 22:52:51,470 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 [2019-11-15 22:52:51,471 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 22:52:51,471 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 22:52:51,477 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 22:52:51,477 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 22:52:51,477 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 22:52:51,478 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 22:52:51,478 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 22:52:51,485 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 22:52:51,508 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-15 22:52:51,508 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 22:52:51,510 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 22:52:51,510 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 22:52:51,510 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 22:52:51,511 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 [] [2019-11-15 22:52:51,513 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 22:52:51,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:52:51,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:52:51,575 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 22:52:51,577 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:52:51,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:52:51,592 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 22:52:51,593 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:52:51,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:52:51,608 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 [2019-11-15 22:52:51,609 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2019-11-15 22:52:51,661 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 28 states and 35 transitions. Complement of second has 6 states. [2019-11-15 22:52:51,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-15 22:52:51,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 22:52:51,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2019-11-15 22:52:51,666 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 2 letters. [2019-11-15 22:52:51,667 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 22:52:51,668 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-15 22:52:51,668 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 22:52:51,668 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 4 letters. [2019-11-15 22:52:51,668 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 22:52:51,669 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2019-11-15 22:52:51,672 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 22:52:51,679 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 8 states and 11 transitions. [2019-11-15 22:52:51,680 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-15 22:52:51,680 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-11-15 22:52:51,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2019-11-15 22:52:51,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 22:52:51,681 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-11-15 22:52:51,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2019-11-15 22:52:51,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-15 22:52:51,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-15 22:52:51,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2019-11-15 22:52:51,707 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-11-15 22:52:51,708 INFO L591 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-11-15 22:52:51,708 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-15 22:52:51,708 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2019-11-15 22:52:51,710 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 22:52:51,710 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 22:52:51,711 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 22:52:51,711 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-15 22:52:51,711 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-15 22:52:51,711 INFO L791 eck$LassoCheckResult]: Stem: 72#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 73#L17 assume main_~x~0 >= 0 && main_~y~0 >= 0; 74#L19-2 assume !!(main_~x~0 - main_~y~0 > 2 || main_~y~0 - main_~x~0 > 2); 79#L19 assume !(main_~x~0 < main_~y~0);main_~y~0 := 1 + main_~y~0; 75#L19-2 [2019-11-15 22:52:51,711 INFO L793 eck$LassoCheckResult]: Loop: 75#L19-2 assume !!(main_~x~0 - main_~y~0 > 2 || main_~y~0 - main_~x~0 > 2); 76#L19 assume main_~x~0 < main_~y~0;main_~x~0 := 1 + main_~x~0; 75#L19-2 [2019-11-15 22:52:51,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:52:51,712 INFO L82 PathProgramCache]: Analyzing trace with hash 957577, now seen corresponding path program 1 times [2019-11-15 22:52:51,712 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:52:51,712 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779853613] [2019-11-15 22:52:51,713 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:51,713 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:51,713 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:52:51,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:52:51,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:52:51,740 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 22:52:51,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:52:51,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 2 times [2019-11-15 22:52:51,741 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:52:51,741 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009540528] [2019-11-15 22:52:51,741 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:51,741 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:51,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:52:51,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:52:51,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:52:51,748 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 22:52:51,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:52:51,748 INFO L82 PathProgramCache]: Analyzing trace with hash 920231916, now seen corresponding path program 1 times [2019-11-15 22:52:51,748 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:52:51,748 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495242298] [2019-11-15 22:52:51,751 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:51,751 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:51,752 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:52:51,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:52:51,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:52:51,840 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495242298] [2019-11-15 22:52:51,840 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:52:51,841 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 22:52:51,841 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988760100] [2019-11-15 22:52:51,869 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 22:52:51,869 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 22:52:51,870 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 22:52:51,870 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 22:52:51,870 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 22:52:51,870 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 22:52:51,870 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 22:52:51,870 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 22:52:51,870 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wise.c_Iteration2_Loop [2019-11-15 22:52:51,871 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 22:52:51,871 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 22:52:51,872 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:52:51,875 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:52:51,887 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:52:51,927 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 22:52:51,928 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf4fb04-7a70-4364-9909-e6bf52f8831d/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 22:52:51,932 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 22:52:51,932 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 22:52:51,937 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 22:52:51,937 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_8cf4fb04-7a70-4364-9909-e6bf52f8831d/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 22:52:51,957 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 22:52:51,957 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf4fb04-7a70-4364-9909-e6bf52f8831d/bin/uautomizer/z3 Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 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 [2019-11-15 22:52:51,976 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 22:52:51,976 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 22:52:52,105 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 22:52:52,107 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 22:52:52,107 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 22:52:52,107 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 22:52:52,107 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 22:52:52,107 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 22:52:52,108 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 22:52:52,108 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 22:52:52,108 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 22:52:52,108 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wise.c_Iteration2_Loop [2019-11-15 22:52:52,108 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 22:52:52,108 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 22:52:52,109 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:52:52,113 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:52:52,118 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:52:52,174 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 22:52:52,174 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 22:52:52,174 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 [2019-11-15 22:52:52,175 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 22:52:52,175 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 22:52:52,176 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 22:52:52,176 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 22:52:52,177 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 22:52:52,177 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 22:52:52,190 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 22:52:52,192 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 22:52:52,193 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 22:52:52,195 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 22:52:52,195 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 22:52:52,195 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 22:52:52,195 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 22:52:52,196 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 22:52:52,198 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 22:52:52,202 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 22:52:52,209 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 22:52:52,212 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 22:52:52,212 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 22:52:52,213 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 22:52:52,213 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 22:52:52,213 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 [] [2019-11-15 22:52:52,214 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 22:52:52,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:52:52,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:52:52,239 INFO L256 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 22:52:52,239 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:52:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:52:52,246 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 22:52:52,246 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:52:52,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:52:52,247 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 [2019-11-15 22:52:52,247 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-15 22:52:52,260 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 12 states and 17 transitions. Complement of second has 5 states. [2019-11-15 22:52:52,262 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 [2019-11-15 22:52:52,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 22:52:52,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-11-15 22:52:52,263 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-15 22:52:52,263 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 22:52:52,264 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-15 22:52:52,264 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 22:52:52,264 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2019-11-15 22:52:52,264 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 22:52:52,264 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2019-11-15 22:52:52,265 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 22:52:52,265 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2019-11-15 22:52:52,266 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-11-15 22:52:52,266 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-15 22:52:52,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2019-11-15 22:52:52,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 22:52:52,266 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2019-11-15 22:52:52,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2019-11-15 22:52:52,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-15 22:52:52,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-15 22:52:52,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2019-11-15 22:52:52,268 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2019-11-15 22:52:52,268 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:52:52,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 22:52:52,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-15 22:52:52,274 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. Second operand 5 states. [2019-11-15 22:52:52,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:52:52,301 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2019-11-15 22:52:52,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 22:52:52,302 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2019-11-15 22:52:52,303 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 22:52:52,303 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 10 states and 12 transitions. [2019-11-15 22:52:52,303 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-11-15 22:52:52,304 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-15 22:52:52,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 12 transitions. [2019-11-15 22:52:52,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 22:52:52,304 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2019-11-15 22:52:52,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 12 transitions. [2019-11-15 22:52:52,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 7. [2019-11-15 22:52:52,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-15 22:52:52,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2019-11-15 22:52:52,305 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-11-15 22:52:52,305 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-11-15 22:52:52,305 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-15 22:52:52,306 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2019-11-15 22:52:52,306 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 22:52:52,306 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 22:52:52,306 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 22:52:52,306 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-15 22:52:52,306 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-15 22:52:52,307 INFO L791 eck$LassoCheckResult]: Stem: 156#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 157#L17 assume main_~x~0 >= 0 && main_~y~0 >= 0; 158#L19-2 assume !!(main_~x~0 - main_~y~0 > 2 || main_~y~0 - main_~x~0 > 2); 160#L19 [2019-11-15 22:52:52,307 INFO L793 eck$LassoCheckResult]: Loop: 160#L19 assume !(main_~x~0 < main_~y~0);main_~y~0 := 1 + main_~y~0; 159#L19-2 assume !!(main_~x~0 - main_~y~0 > 2 || main_~y~0 - main_~x~0 > 2); 160#L19 [2019-11-15 22:52:52,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:52:52,307 INFO L82 PathProgramCache]: Analyzing trace with hash 30889, now seen corresponding path program 1 times [2019-11-15 22:52:52,307 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:52:52,307 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084541911] [2019-11-15 22:52:52,308 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:52,308 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:52,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:52:52,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:52:52,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:52:52,326 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 22:52:52,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:52:52,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1532, now seen corresponding path program 1 times [2019-11-15 22:52:52,327 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:52:52,329 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611013531] [2019-11-15 22:52:52,329 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:52,329 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:52,329 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:52:52,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:52:52,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:52:52,334 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 22:52:52,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:52:52,335 INFO L82 PathProgramCache]: Analyzing trace with hash 29684900, now seen corresponding path program 2 times [2019-11-15 22:52:52,335 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:52:52,335 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145305732] [2019-11-15 22:52:52,335 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:52,336 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:52,336 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:52:52,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:52:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:52:52,346 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 22:52:52,379 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 22:52:52,380 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 22:52:52,380 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 22:52:52,380 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 22:52:52,380 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 22:52:52,380 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 22:52:52,380 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 22:52:52,380 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 22:52:52,380 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wise.c_Iteration3_Loop [2019-11-15 22:52:52,380 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 22:52:52,381 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 22:52:52,382 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:52:52,386 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:52:52,393 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:52:52,436 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 22:52:52,436 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf4fb04-7a70-4364-9909-e6bf52f8831d/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 22:52:52,440 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 22:52:52,440 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 22:52:52,443 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 22:52:52,443 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_8cf4fb04-7a70-4364-9909-e6bf52f8831d/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 [2019-11-15 22:52:52,448 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 22:52:52,448 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf4fb04-7a70-4364-9909-e6bf52f8831d/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 [2019-11-15 22:52:52,469 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 22:52:52,469 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 22:52:52,748 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 22:52:52,749 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 22:52:52,749 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 22:52:52,749 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 22:52:52,750 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 22:52:52,750 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 22:52:52,750 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 22:52:52,750 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 22:52:52,750 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 22:52:52,750 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wise.c_Iteration3_Loop [2019-11-15 22:52:52,750 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 22:52:52,750 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 22:52:52,751 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:52:52,765 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:52:52,771 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:52:52,823 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 22:52:52,823 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 22:52:52,823 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 [2019-11-15 22:52:52,824 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 22:52:52,824 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 22:52:52,824 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 22:52:52,824 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 22:52:52,824 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 22:52:52,825 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 22:52:52,825 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 22:52:52,829 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 22:52:52,832 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-15 22:52:52,842 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 22:52:52,843 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 22:52:52,843 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 22:52:52,843 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 22:52:52,843 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 [] [2019-11-15 22:52:52,844 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 22:52:52,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:52:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:52:52,872 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 22:52:52,872 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:52:52,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:52:52,877 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 22:52:52,877 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:52:52,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:52:52,905 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 [2019-11-15 22:52:52,905 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-11-15 22:52:52,917 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 12 states and 14 transitions. Complement of second has 5 states. [2019-11-15 22:52:52,920 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 [2019-11-15 22:52:52,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 22:52:52,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-11-15 22:52:52,921 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-15 22:52:52,921 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 22:52:52,921 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-15 22:52:52,921 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 22:52:52,921 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2019-11-15 22:52:52,922 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 22:52:52,923 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2019-11-15 22:52:52,923 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 22:52:52,924 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 8 states and 9 transitions. [2019-11-15 22:52:52,924 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-15 22:52:52,924 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-11-15 22:52:52,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2019-11-15 22:52:52,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 22:52:52,925 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-11-15 22:52:52,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2019-11-15 22:52:52,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2019-11-15 22:52:52,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-15 22:52:52,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2019-11-15 22:52:52,926 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2019-11-15 22:52:52,926 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2019-11-15 22:52:52,926 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-15 22:52:52,926 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2019-11-15 22:52:52,927 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 22:52:52,927 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 22:52:52,927 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 22:52:52,927 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2019-11-15 22:52:52,927 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-15 22:52:52,928 INFO L791 eck$LassoCheckResult]: Stem: 211#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 212#L17 assume main_~x~0 >= 0 && main_~y~0 >= 0; 213#L19-2 assume !!(main_~x~0 - main_~y~0 > 2 || main_~y~0 - main_~x~0 > 2); 214#L19 assume main_~x~0 < main_~y~0;main_~x~0 := 1 + main_~x~0; 215#L19-2 assume !!(main_~x~0 - main_~y~0 > 2 || main_~y~0 - main_~x~0 > 2); 216#L19 [2019-11-15 22:52:52,928 INFO L793 eck$LassoCheckResult]: Loop: 216#L19 assume !(main_~x~0 < main_~y~0);main_~y~0 := 1 + main_~y~0; 217#L19-2 assume !!(main_~x~0 - main_~y~0 > 2 || main_~y~0 - main_~x~0 > 2); 216#L19 [2019-11-15 22:52:52,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:52:52,928 INFO L82 PathProgramCache]: Analyzing trace with hash 29684838, now seen corresponding path program 2 times [2019-11-15 22:52:52,928 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:52:52,929 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851618668] [2019-11-15 22:52:52,929 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:52,929 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:52,929 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:52:52,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:52:52,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:52:52,947 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 22:52:52,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:52:52,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1532, now seen corresponding path program 2 times [2019-11-15 22:52:52,947 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:52:52,948 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656849792] [2019-11-15 22:52:52,948 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:52,948 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:52,948 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:52:52,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:52:52,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:52:52,964 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 22:52:52,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:52:52,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1537641183, now seen corresponding path program 2 times [2019-11-15 22:52:52,965 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:52:52,965 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446407848] [2019-11-15 22:52:52,965 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:52,965 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:52:52,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:52:52,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:52:53,018 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:52:53,018 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446407848] [2019-11-15 22:52:53,018 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:52:53,018 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 22:52:53,019 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763650116] [2019-11-15 22:52:53,040 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 22:52:53,040 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 22:52:53,040 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 22:52:53,040 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 22:52:53,040 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 22:52:53,041 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 22:52:53,041 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 22:52:53,041 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 22:52:53,041 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wise.c_Iteration4_Loop [2019-11-15 22:52:53,041 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 22:52:53,041 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 22:52:53,042 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:52:53,051 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:52:53,058 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:52:53,117 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 22:52:53,117 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf4fb04-7a70-4364-9909-e6bf52f8831d/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 22:52:53,134 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 22:52:53,134 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cf4fb04-7a70-4364-9909-e6bf52f8831d/bin/uautomizer/z3 Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 22:52:53,156 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 22:52:53,157 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 22:52:53,457 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 22:52:53,458 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 22:52:53,459 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 22:52:53,459 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 22:52:53,459 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 22:52:53,459 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 22:52:53,459 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 22:52:53,459 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 22:52:53,459 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 22:52:53,459 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wise.c_Iteration4_Loop [2019-11-15 22:52:53,459 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 22:52:53,459 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 22:52:53,461 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:52:53,467 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:52:53,469 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:52:53,527 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 22:52:53,527 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 22:52:53,528 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 [2019-11-15 22:52:53,528 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 22:52:53,528 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 22:52:53,528 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 22:52:53,529 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 22:52:53,529 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 22:52:53,529 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 22:52:53,529 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 22:52:53,534 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 22:52:53,537 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-15 22:52:53,537 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 22:52:53,538 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 22:52:53,538 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 22:52:53,538 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 22:52:53,539 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 [] [2019-11-15 22:52:53,539 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 22:52:53,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:52:53,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:52:53,562 INFO L256 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 22:52:53,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:52:53,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:52:53,570 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 22:52:53,570 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:52:53,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:52:53,584 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 [2019-11-15 22:52:53,584 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-11-15 22:52:53,591 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 8 states and 9 transitions. Complement of second has 3 states. [2019-11-15 22:52:53,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2019-11-15 22:52:53,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 22:52:53,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2019-11-15 22:52:53,592 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-15 22:52:53,592 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 22:52:53,593 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-15 22:52:53,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:52:53,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:52:53,610 INFO L256 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 22:52:53,611 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:52:53,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:52:53,616 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 22:52:53,616 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:52:53,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:52:53,636 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-15 22:52:53,636 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-11-15 22:52:53,640 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 8 states and 9 transitions. Complement of second has 3 states. [2019-11-15 22:52:53,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2019-11-15 22:52:53,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 22:52:53,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2019-11-15 22:52:53,641 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-15 22:52:53,641 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 22:52:53,641 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-15 22:52:53,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:52:53,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:52:53,672 INFO L256 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 22:52:53,673 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:52:53,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:52:53,678 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 22:52:53,678 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:52:53,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:52:53,696 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-15 22:52:53,697 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-11-15 22:52:53,709 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 9 states and 10 transitions. Complement of second has 4 states. [2019-11-15 22:52:53,710 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 [2019-11-15 22:52:53,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 22:52:53,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-11-15 22:52:53,711 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-15 22:52:53,711 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 22:52:53,711 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2019-11-15 22:52:53,712 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 22:52:53,712 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2019-11-15 22:52:53,712 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 22:52:53,713 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2019-11-15 22:52:53,713 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 22:52:53,713 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2019-11-15 22:52:53,713 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-15 22:52:53,714 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-15 22:52:53,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-15 22:52:53,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 22:52:53,714 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 22:52:53,714 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 22:52:53,714 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:52:53,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 22:52:53,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-15 22:52:53,715 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2019-11-15 22:52:53,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:52:53,715 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-11-15 22:52:53,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 22:52:53,715 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-11-15 22:52:53,715 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 22:52:53,716 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 22:52:53,716 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-15 22:52:53,716 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-15 22:52:53,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-15 22:52:53,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 22:52:53,716 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 22:52:53,716 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 22:52:53,716 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 22:52:53,716 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-15 22:52:53,720 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-15 22:52:53,720 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 22:52:53,720 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-15 22:52:53,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.11 10:52:53 BoogieIcfgContainer [2019-11-15 22:52:53,727 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-15 22:52:53,728 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 22:52:53,728 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 22:52:53,728 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 22:52:53,729 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:52:50" (3/4) ... [2019-11-15 22:52:53,732 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 22:52:53,732 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 22:52:53,737 INFO L168 Benchmark]: Toolchain (without parser) took 3498.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 944.7 MB in the beginning and 881.2 MB in the end (delta: 63.5 MB). Peak memory consumption was 195.6 MB. Max. memory is 11.5 GB. [2019-11-15 22:52:53,738 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. [2019-11-15 22:52:53,739 INFO L168 Benchmark]: CACSL2BoogieTranslator took 241.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -183.6 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-15 22:52:53,744 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.78 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:52:53,744 INFO L168 Benchmark]: Boogie Preprocessor took 16.56 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:52:53,745 INFO L168 Benchmark]: RCFGBuilder took 190.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-11-15 22:52:53,745 INFO L168 Benchmark]: BuchiAutomizer took 3012.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 881.2 MB in the end (delta: 227.4 MB). Peak memory consumption was 227.4 MB. Max. memory is 11.5 GB. [2019-11-15 22:52:53,746 INFO L168 Benchmark]: Witness Printer took 4.56 ms. Allocated memory is still 1.2 GB. Free memory is still 881.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:52:53,751 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 241.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -183.6 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.78 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.56 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 190.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3012.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 881.2 MB in the end (delta: 227.4 MB). Peak memory consumption was 227.4 MB. Max. memory is 11.5 GB. * Witness Printer took 4.56 ms. Allocated memory is still 1.2 GB. Free memory is still 881.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function y + -1 * x and consists of 4 locations. One deterministic module has affine ranking function y + -1 * x and consists of 3 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. 2 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.9s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 8 states and ocurred in iteration 1. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 31 SDtfs, 29 SDslu, 3 SDs, 0 SdLazy, 44 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax200 hnf100 lsp50 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 15ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...