./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0b2206f2-b323-4aad-b091-e7432d23b4c8/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0b2206f2-b323-4aad-b091-e7432d23b4c8/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0b2206f2-b323-4aad-b091-e7432d23b4c8/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0b2206f2-b323-4aad-b091-e7432d23b4c8/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-wise.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0b2206f2-b323-4aad-b091-e7432d23b4c8/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0b2206f2-b323-4aad-b091-e7432d23b4c8/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 0.2.0-a4ecdab [2020-11-29 22:00:25,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:00:25,176 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:00:25,245 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:00:25,265 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:00:25,266 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:00:25,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:00:25,271 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:00:25,273 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:00:25,276 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:00:25,277 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:00:25,279 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:00:25,279 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:00:25,280 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:00:25,282 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:00:25,284 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:00:25,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:00:25,286 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:00:25,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:00:25,304 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:00:25,306 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:00:25,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:00:25,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:00:25,316 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:00:25,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:00:25,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:00:25,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:00:25,330 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:00:25,331 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:00:25,332 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:00:25,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:00:25,333 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:00:25,334 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:00:25,335 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:00:25,337 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:00:25,337 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:00:25,338 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:00:25,338 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:00:25,339 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:00:25,340 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:00:25,341 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:00:25,348 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0b2206f2-b323-4aad-b091-e7432d23b4c8/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-29 22:00:25,401 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:00:25,401 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:00:25,403 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:00:25,403 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:00:25,404 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:00:25,404 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 22:00:25,404 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 22:00:25,404 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 22:00:25,405 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 22:00:25,405 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 22:00:25,406 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 22:00:25,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:00:25,407 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 22:00:25,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:00:25,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:00:25,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 22:00:25,408 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 22:00:25,408 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 22:00:25,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 22:00:25,408 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 22:00:25,409 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:00:25,409 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 22:00:25,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:00:25,409 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:00:25,410 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 22:00:25,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:00:25,410 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 22:00:25,410 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:00:25,411 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 22:00:25,413 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 22:00:25,414 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_0b2206f2-b323-4aad-b091-e7432d23b4c8/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0b2206f2-b323-4aad-b091-e7432d23b4c8/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c761fb15c9d367876fc9f1553874e9680fa1668 [2020-11-29 22:00:25,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:00:25,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:00:25,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:00:25,755 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:00:25,756 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:00:25,757 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0b2206f2-b323-4aad-b091-e7432d23b4c8/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-wise.c [2020-11-29 22:00:25,842 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0b2206f2-b323-4aad-b091-e7432d23b4c8/bin/uautomizer/data/447c5cbfe/1292053c8f0449deb5c651269b84f1e3/FLAG8f08f7efc [2020-11-29 22:00:26,326 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:00:26,326 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0b2206f2-b323-4aad-b091-e7432d23b4c8/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-wise.c [2020-11-29 22:00:26,334 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0b2206f2-b323-4aad-b091-e7432d23b4c8/bin/uautomizer/data/447c5cbfe/1292053c8f0449deb5c651269b84f1e3/FLAG8f08f7efc [2020-11-29 22:00:26,718 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0b2206f2-b323-4aad-b091-e7432d23b4c8/bin/uautomizer/data/447c5cbfe/1292053c8f0449deb5c651269b84f1e3 [2020-11-29 22:00:26,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:00:26,722 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 22:00:26,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:00:26,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:00:26,728 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:00:26,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:00:26" (1/1) ... [2020-11-29 22:00:26,731 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@80e668b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:00:26, skipping insertion in model container [2020-11-29 22:00:26,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:00:26" (1/1) ... [2020-11-29 22:00:26,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:00:26,753 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:00:26,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:00:26,956 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:00:26,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:00:27,003 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:00:27,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:00:27 WrapperNode [2020-11-29 22:00:27,004 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:00:27,005 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 22:00:27,005 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 22:00:27,006 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 22:00:27,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:00:27" (1/1) ... [2020-11-29 22:00:27,019 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:00:27" (1/1) ... [2020-11-29 22:00:27,036 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 22:00:27,037 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:00:27,037 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:00:27,037 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:00:27,046 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:00:27" (1/1) ... [2020-11-29 22:00:27,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:00:27" (1/1) ... [2020-11-29 22:00:27,047 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:00:27" (1/1) ... [2020-11-29 22:00:27,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:00:27" (1/1) ... [2020-11-29 22:00:27,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:00:27" (1/1) ... [2020-11-29 22:00:27,054 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:00:27" (1/1) ... [2020-11-29 22:00:27,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:00:27" (1/1) ... [2020-11-29 22:00:27,057 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:00:27,058 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:00:27,058 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:00:27,058 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:00:27,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:00:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b2206f2-b323-4aad-b091-e7432d23b4c8/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 [2020-11-29 22:00:27,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:00:27,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:00:27,339 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:00:27,339 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-29 22:00:27,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:00:27 BoogieIcfgContainer [2020-11-29 22:00:27,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:00:27,342 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 22:00:27,342 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 22:00:27,345 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 22:00:27,346 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 22:00:27,346 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 10:00:26" (1/3) ... [2020-11-29 22:00:27,347 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@32763cc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 10:00:27, skipping insertion in model container [2020-11-29 22:00:27,347 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 22:00:27,348 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:00:27" (2/3) ... [2020-11-29 22:00:27,348 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@32763cc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 10:00:27, skipping insertion in model container [2020-11-29 22:00:27,348 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 22:00:27,349 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:00:27" (3/3) ... [2020-11-29 22:00:27,350 INFO L373 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-wise.c [2020-11-29 22:00:27,398 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 22:00:27,398 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 22:00:27,398 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 22:00:27,399 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:00:27,399 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:00:27,399 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 22:00:27,399 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:00:27,399 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 22:00:27,412 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-29 22:00:27,458 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 22:00:27,458 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:00:27,458 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:00:27,465 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-29 22:00:27,465 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 22:00:27,465 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 22:00:27,465 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-29 22:00:27,466 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 22:00:27,466 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:00:27,466 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:00:27,467 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-29 22:00:27,467 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 22:00:27,502 INFO L794 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 [2020-11-29 22:00:27,503 INFO L796 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 [2020-11-29 22:00:27,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:00:27,509 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2020-11-29 22:00:27,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:00:27,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667462268] [2020-11-29 22:00:27,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:00:27,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:00:27,618 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:00:27,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:00:27,630 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:00:27,657 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:00:27,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:00:27,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 1 times [2020-11-29 22:00:27,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:00:27,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513379973] [2020-11-29 22:00:27,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:00:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:00:27,695 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:00:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:00:27,711 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:00:27,713 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:00:27,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:00:27,726 INFO L82 PathProgramCache]: Analyzing trace with hash 957575, now seen corresponding path program 1 times [2020-11-29 22:00:27,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:00:27,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945216496] [2020-11-29 22:00:27,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:00:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:00:27,745 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:00:27,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:00:27,755 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:00:27,761 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:00:27,877 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 10 [2020-11-29 22:00:27,911 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:00:27,912 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:00:27,912 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:00:27,912 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:00:27,912 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 22:00:27,913 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:00:27,913 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:00:27,913 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:00:27,913 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wise.c_Iteration1_Loop [2020-11-29 22:00:27,913 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:00:27,914 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:00:27,937 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:00:27,953 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:00:27,959 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:00:28,064 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:00:28,065 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b2206f2-b323-4aad-b091-e7432d23b4c8/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 [2020-11-29 22:00:28,074 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 22:00:28,074 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 22:00:28,084 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 22:00:28,084 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_0b2206f2-b323-4aad-b091-e7432d23b4c8/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) [2020-11-29 22:00:28,132 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 22:00:28,133 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:00:28,137 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 22:00:28,137 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_0b2206f2-b323-4aad-b091-e7432d23b4c8/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) [2020-11-29 22:00:28,180 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 22:00:28,181 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_0b2206f2-b323-4aad-b091-e7432d23b4c8/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 [2020-11-29 22:00:28,211 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 22:00:28,211 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 22:00:28,364 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 22:00:28,367 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:00:28,367 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:00:28,367 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:00:28,367 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:00:28,367 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 22:00:28,368 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:00:28,368 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:00:28,368 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:00:28,368 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wise.c_Iteration1_Loop [2020-11-29 22:00:28,368 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:00:28,368 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:00:28,369 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:00:28,385 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:00:28,391 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:00:28,501 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:00:28,507 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b2206f2-b323-4aad-b091-e7432d23b4c8/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:00:28,519 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 [2020-11-29 22:00:28,525 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:00:28,526 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:00:28,526 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:00:28,526 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:00:28,532 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:00:28,532 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:00:28,538 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b2206f2-b323-4aad-b091-e7432d23b4c8/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:00:28,583 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 [2020-11-29 22:00:28,586 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:00:28,586 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:00:28,587 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:00:28,587 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:00:28,591 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:00:28,591 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:00:28,596 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b2206f2-b323-4aad-b091-e7432d23b4c8/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:00:28,640 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 [2020-11-29 22:00:28,642 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:00:28,642 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:00:28,643 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:00:28,643 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:00:28,643 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:00:28,645 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:00:28,645 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:00:28,649 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 22:00:28,657 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-11-29 22:00:28,658 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b2206f2-b323-4aad-b091-e7432d23b4c8/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 [2020-11-29 22:00:28,664 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 22:00:28,665 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 22:00:28,665 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 22:00:28,666 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 [] [2020-11-29 22:00:28,704 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 22:00:28,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:00:28,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:28,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 22:00:28,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:00:28,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:28,825 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 22:00:28,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:00:28,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:00:28,874 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 [2020-11-29 22:00:28,876 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2020-11-29 22:00:28,929 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 28 states and 35 transitions. Complement of second has 8 states. [2020-11-29 22:00:28,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 22:00:28,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 22:00:28,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 16 transitions. [2020-11-29 22:00:28,937 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 2 letters. Loop has 2 letters. [2020-11-29 22:00:28,938 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:00:28,938 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 4 letters. Loop has 2 letters. [2020-11-29 22:00:28,938 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:00:28,939 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 2 letters. Loop has 4 letters. [2020-11-29 22:00:28,939 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:00:28,940 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2020-11-29 22:00:28,943 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 22:00:28,947 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 8 states and 11 transitions. [2020-11-29 22:00:28,951 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-11-29 22:00:28,951 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-11-29 22:00:28,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2020-11-29 22:00:28,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 22:00:28,952 INFO L691 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2020-11-29 22:00:28,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2020-11-29 22:00:28,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-11-29 22:00:28,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-29 22:00:28,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2020-11-29 22:00:28,978 INFO L714 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2020-11-29 22:00:28,979 INFO L594 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2020-11-29 22:00:28,979 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 22:00:28,979 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2020-11-29 22:00:28,979 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 22:00:28,980 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:00:28,980 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:00:28,980 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-29 22:00:28,980 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 22:00:28,981 INFO L794 eck$LassoCheckResult]: Stem: 76#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; 77#L17 assume main_~x~0 >= 0 && main_~y~0 >= 0; 78#L19-2 assume !!(main_~x~0 - main_~y~0 > 2 || main_~y~0 - main_~x~0 > 2); 83#L19 assume !(main_~x~0 < main_~y~0);main_~y~0 := 1 + main_~y~0; 79#L19-2 [2020-11-29 22:00:28,981 INFO L796 eck$LassoCheckResult]: Loop: 79#L19-2 assume !!(main_~x~0 - main_~y~0 > 2 || main_~y~0 - main_~x~0 > 2); 80#L19 assume main_~x~0 < main_~y~0;main_~x~0 := 1 + main_~x~0; 79#L19-2 [2020-11-29 22:00:28,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:00:28,981 INFO L82 PathProgramCache]: Analyzing trace with hash 957577, now seen corresponding path program 1 times [2020-11-29 22:00:28,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:00:28,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355691873] [2020-11-29 22:00:28,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:00:28,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:00:28,990 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:00:28,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:00:28,995 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:00:28,999 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:00:29,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:00:29,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 2 times [2020-11-29 22:00:29,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:00:29,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439201537] [2020-11-29 22:00:29,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:00:29,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:00:29,007 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:00:29,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:00:29,011 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:00:29,012 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:00:29,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:00:29,013 INFO L82 PathProgramCache]: Analyzing trace with hash 920231916, now seen corresponding path program 1 times [2020-11-29 22:00:29,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:00:29,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740336749] [2020-11-29 22:00:29,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:00:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:29,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:00:29,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740336749] [2020-11-29 22:00:29,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:00:29,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:00:29,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323704302] [2020-11-29 22:00:29,162 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:00:29,163 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:00:29,163 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:00:29,163 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:00:29,163 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 22:00:29,163 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:00:29,163 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:00:29,164 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:00:29,164 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wise.c_Iteration2_Loop [2020-11-29 22:00:29,164 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:00:29,164 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:00:29,165 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:00:29,172 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:00:29,188 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:00:29,267 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:00:29,267 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b2206f2-b323-4aad-b091-e7432d23b4c8/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) [2020-11-29 22:00:29,273 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 22:00:29,274 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:00:29,281 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 22:00:29,281 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_0b2206f2-b323-4aad-b091-e7432d23b4c8/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) [2020-11-29 22:00:29,327 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 22:00:29,327 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b2206f2-b323-4aad-b091-e7432d23b4c8/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:00:29,361 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 22:00:29,361 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 22:00:29,585 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 22:00:29,586 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:00:29,586 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:00:29,587 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:00:29,587 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:00:29,587 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 22:00:29,587 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:00:29,587 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:00:29,587 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:00:29,587 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wise.c_Iteration2_Loop [2020-11-29 22:00:29,587 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:00:29,587 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:00:29,589 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:00:29,596 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:00:29,606 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:00:29,677 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:00:29,677 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b2206f2-b323-4aad-b091-e7432d23b4c8/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:00:29,688 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 [2020-11-29 22:00:29,691 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:00:29,691 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:00:29,691 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:00:29,692 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:00:29,697 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:00:29,697 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:00:29,702 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b2206f2-b323-4aad-b091-e7432d23b4c8/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:00:29,749 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 [2020-11-29 22:00:29,752 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:00:29,752 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:00:29,752 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:00:29,752 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:00:29,752 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:00:29,756 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:00:29,757 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:00:29,759 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 22:00:29,771 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 22:00:29,771 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b2206f2-b323-4aad-b091-e7432d23b4c8/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:00:29,784 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 22:00:29,784 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 22:00:29,785 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 22:00:29,785 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 [] Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:00:29,823 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 22:00:29,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:00:29,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:29,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 22:00:29,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:00:29,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:29,861 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 22:00:29,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:00:29,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:00:29,888 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 [2020-11-29 22:00:29,888 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-11-29 22:00:29,910 INFO L75 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. [2020-11-29 22:00:29,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 22:00:29,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 22:00:29,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2020-11-29 22:00:29,914 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2020-11-29 22:00:29,915 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:00:29,915 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2020-11-29 22:00:29,915 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:00:29,915 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2020-11-29 22:00:29,916 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:00:29,916 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2020-11-29 22:00:29,917 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 22:00:29,918 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2020-11-29 22:00:29,918 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-11-29 22:00:29,918 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-11-29 22:00:29,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2020-11-29 22:00:29,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 22:00:29,918 INFO L691 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2020-11-29 22:00:29,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2020-11-29 22:00:29,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-29 22:00:29,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-29 22:00:29,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2020-11-29 22:00:29,921 INFO L714 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2020-11-29 22:00:29,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:00:29,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:00:29,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:00:29,928 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. Second operand 5 states. [2020-11-29 22:00:29,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:00:29,955 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2020-11-29 22:00:29,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:00:29,956 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2020-11-29 22:00:29,957 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 22:00:29,958 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 10 states and 12 transitions. [2020-11-29 22:00:29,958 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-11-29 22:00:29,958 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-11-29 22:00:29,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 12 transitions. [2020-11-29 22:00:29,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 22:00:29,959 INFO L691 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2020-11-29 22:00:29,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 12 transitions. [2020-11-29 22:00:29,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 7. [2020-11-29 22:00:29,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-29 22:00:29,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2020-11-29 22:00:29,960 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2020-11-29 22:00:29,961 INFO L594 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2020-11-29 22:00:29,961 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 22:00:29,961 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2020-11-29 22:00:29,961 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 22:00:29,961 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:00:29,962 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:00:29,962 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-29 22:00:29,962 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 22:00:29,962 INFO L794 eck$LassoCheckResult]: Stem: 161#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; 162#L17 assume main_~x~0 >= 0 && main_~y~0 >= 0; 163#L19-2 assume !!(main_~x~0 - main_~y~0 > 2 || main_~y~0 - main_~x~0 > 2); 165#L19 [2020-11-29 22:00:29,962 INFO L796 eck$LassoCheckResult]: Loop: 165#L19 assume !(main_~x~0 < main_~y~0);main_~y~0 := 1 + main_~y~0; 164#L19-2 assume !!(main_~x~0 - main_~y~0 > 2 || main_~y~0 - main_~x~0 > 2); 165#L19 [2020-11-29 22:00:29,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:00:29,967 INFO L82 PathProgramCache]: Analyzing trace with hash 30889, now seen corresponding path program 1 times [2020-11-29 22:00:29,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:00:29,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183424779] [2020-11-29 22:00:29,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:00:29,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:00:29,988 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:00:29,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:00:29,992 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:00:29,994 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:00:29,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:00:29,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1532, now seen corresponding path program 1 times [2020-11-29 22:00:29,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:00:29,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311391708] [2020-11-29 22:00:29,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:00:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:00:30,022 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:00:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:00:30,026 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:00:30,027 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:00:30,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:00:30,028 INFO L82 PathProgramCache]: Analyzing trace with hash 29684900, now seen corresponding path program 2 times [2020-11-29 22:00:30,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:00:30,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009894316] [2020-11-29 22:00:30,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:00:30,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:00:30,036 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:00:30,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:00:30,041 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:00:30,043 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:00:30,075 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:00:30,076 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:00:30,076 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:00:30,076 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:00:30,076 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 22:00:30,076 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:00:30,076 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:00:30,076 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:00:30,076 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wise.c_Iteration3_Loop [2020-11-29 22:00:30,077 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:00:30,077 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:00:30,078 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:00:30,088 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:00:30,102 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:00:30,158 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:00:30,158 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b2206f2-b323-4aad-b091-e7432d23b4c8/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:00:30,165 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 22:00:30,165 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:00:30,169 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 22:00:30,170 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_0b2206f2-b323-4aad-b091-e7432d23b4c8/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:00:30,195 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 22:00:30,195 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b2206f2-b323-4aad-b091-e7432d23b4c8/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:00:30,223 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 22:00:30,223 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:00:30,632 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 22:00:30,634 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:00:30,634 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:00:30,634 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:00:30,634 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:00:30,634 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 22:00:30,634 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:00:30,634 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:00:30,634 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:00:30,634 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wise.c_Iteration3_Loop [2020-11-29 22:00:30,635 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:00:30,635 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:00:30,636 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:00:30,644 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:00:30,649 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:00:30,733 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:00:30,733 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b2206f2-b323-4aad-b091-e7432d23b4c8/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:00:30,748 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 [2020-11-29 22:00:30,750 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:00:30,750 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:00:30,751 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:00:30,751 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:00:30,751 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:00:30,752 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:00:30,752 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:00:30,755 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 22:00:30,760 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 22:00:30,760 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b2206f2-b323-4aad-b091-e7432d23b4c8/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:00:30,765 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 22:00:30,765 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 22:00:30,765 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 22:00:30,765 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 [] Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:00:30,805 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 22:00:30,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:00:30,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:30,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 22:00:30,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:00:30,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:30,842 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 22:00:30,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:00:30,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:00:30,880 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 [2020-11-29 22:00:30,880 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 3 states. [2020-11-29 22:00:30,897 INFO L75 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. [2020-11-29 22:00:30,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 22:00:30,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 22:00:30,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2020-11-29 22:00:30,899 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2020-11-29 22:00:30,899 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:00:30,899 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2020-11-29 22:00:30,899 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:00:30,900 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2020-11-29 22:00:30,900 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:00:30,900 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2020-11-29 22:00:30,901 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 22:00:30,901 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 8 states and 9 transitions. [2020-11-29 22:00:30,901 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-11-29 22:00:30,902 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-11-29 22:00:30,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2020-11-29 22:00:30,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 22:00:30,902 INFO L691 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2020-11-29 22:00:30,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2020-11-29 22:00:30,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2020-11-29 22:00:30,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-29 22:00:30,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2020-11-29 22:00:30,910 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2020-11-29 22:00:30,910 INFO L594 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2020-11-29 22:00:30,910 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 22:00:30,910 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2020-11-29 22:00:30,911 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 22:00:30,911 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:00:30,911 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:00:30,912 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2020-11-29 22:00:30,912 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 22:00:30,912 INFO L794 eck$LassoCheckResult]: Stem: 216#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; 217#L17 assume main_~x~0 >= 0 && main_~y~0 >= 0; 218#L19-2 assume !!(main_~x~0 - main_~y~0 > 2 || main_~y~0 - main_~x~0 > 2); 219#L19 assume main_~x~0 < main_~y~0;main_~x~0 := 1 + main_~x~0; 220#L19-2 assume !!(main_~x~0 - main_~y~0 > 2 || main_~y~0 - main_~x~0 > 2); 221#L19 [2020-11-29 22:00:30,912 INFO L796 eck$LassoCheckResult]: Loop: 221#L19 assume !(main_~x~0 < main_~y~0);main_~y~0 := 1 + main_~y~0; 222#L19-2 assume !!(main_~x~0 - main_~y~0 > 2 || main_~y~0 - main_~x~0 > 2); 221#L19 [2020-11-29 22:00:30,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:00:30,913 INFO L82 PathProgramCache]: Analyzing trace with hash 29684838, now seen corresponding path program 2 times [2020-11-29 22:00:30,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:00:30,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123140158] [2020-11-29 22:00:30,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:00:30,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:00:30,930 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:00:30,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:00:30,934 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:00:30,935 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:00:30,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:00:30,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1532, now seen corresponding path program 2 times [2020-11-29 22:00:30,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:00:30,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694156531] [2020-11-29 22:00:30,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:00:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:00:30,941 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:00:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:00:30,944 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:00:30,945 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:00:30,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:00:30,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1537641183, now seen corresponding path program 2 times [2020-11-29 22:00:30,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:00:30,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094750729] [2020-11-29 22:00:30,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:00:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:30,994 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:00:30,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094750729] [2020-11-29 22:00:30,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:00:30,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 22:00:30,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408411988] [2020-11-29 22:00:31,026 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:00:31,026 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:00:31,026 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:00:31,026 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:00:31,026 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 22:00:31,026 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:00:31,027 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:00:31,027 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:00:31,027 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wise.c_Iteration4_Loop [2020-11-29 22:00:31,027 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:00:31,027 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:00:31,028 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:00:31,036 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:00:31,040 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:00:31,100 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:00:31,100 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b2206f2-b323-4aad-b091-e7432d23b4c8/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:00:31,125 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 22:00:31,125 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b2206f2-b323-4aad-b091-e7432d23b4c8/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:00:31,157 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 22:00:31,157 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 22:00:31,558 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 22:00:31,560 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:00:31,560 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:00:31,561 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:00:31,561 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:00:31,561 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 22:00:31,561 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:00:31,561 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:00:31,561 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:00:31,561 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wise.c_Iteration4_Loop [2020-11-29 22:00:31,561 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:00:31,561 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:00:31,562 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:00:31,596 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:00:31,607 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:00:31,683 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:00:31,684 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b2206f2-b323-4aad-b091-e7432d23b4c8/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:00:31,688 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 Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:00:31,690 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:00:31,690 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:00:31,690 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:00:31,690 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:00:31,690 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:00:31,691 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:00:31,692 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:00:31,694 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 22:00:31,703 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 22:00:31,703 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b2206f2-b323-4aad-b091-e7432d23b4c8/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:00:31,706 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 22:00:31,706 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 22:00:31,706 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 22:00:31,707 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 [] [2020-11-29 22:00:31,729 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 22:00:31,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:00:31,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:31,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 22:00:31,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:00:31,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:31,768 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 22:00:31,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:00:31,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:00:31,798 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 [2020-11-29 22:00:31,798 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand 3 states. [2020-11-29 22:00:31,804 INFO L75 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. [2020-11-29 22:00:31,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2020-11-29 22:00:31,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 22:00:31,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2020-11-29 22:00:31,807 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2020-11-29 22:00:31,807 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:00:31,807 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 22:00:31,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:00:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:31,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 22:00:31,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:00:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:31,845 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 22:00:31,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:00:31,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:00:31,864 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 [2020-11-29 22:00:31,864 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand 3 states. [2020-11-29 22:00:31,869 INFO L75 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. [2020-11-29 22:00:31,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2020-11-29 22:00:31,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 22:00:31,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2020-11-29 22:00:31,872 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2020-11-29 22:00:31,872 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:00:31,872 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 22:00:31,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:00:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:31,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 22:00:31,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:00:31,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:31,996 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 22:00:31,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:00:32,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:00:32,016 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 [2020-11-29 22:00:32,016 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand 3 states. [2020-11-29 22:00:32,034 INFO L75 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. [2020-11-29 22:00:32,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 22:00:32,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 22:00:32,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-11-29 22:00:32,036 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2020-11-29 22:00:32,036 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:00:32,036 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2020-11-29 22:00:32,037 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:00:32,037 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2020-11-29 22:00:32,038 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:00:32,038 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2020-11-29 22:00:32,039 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 22:00:32,039 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2020-11-29 22:00:32,039 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 22:00:32,039 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 22:00:32,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 22:00:32,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 22:00:32,039 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:00:32,040 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:00:32,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:00:32,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:00:32,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:00:32,041 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2020-11-29 22:00:32,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:00:32,041 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-11-29 22:00:32,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 22:00:32,041 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-11-29 22:00:32,042 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 22:00:32,042 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 22:00:32,042 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 22:00:32,042 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 22:00:32,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 22:00:32,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 22:00:32,042 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:00:32,043 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:00:32,043 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:00:32,043 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-29 22:00:32,043 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 22:00:32,043 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 22:00:32,047 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 22:00:32,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 10:00:32 BoogieIcfgContainer [2020-11-29 22:00:32,054 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 22:00:32,055 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:00:32,055 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:00:32,055 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:00:32,056 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:00:27" (3/4) ... [2020-11-29 22:00:32,060 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 22:00:32,060 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:00:32,064 INFO L168 Benchmark]: Toolchain (without parser) took 5339.05 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 62.7 MB in the beginning and 112.8 MB in the end (delta: -50.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:00:32,065 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 119.5 MB. Free memory is still 78.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:00:32,066 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.18 ms. Allocated memory is still 119.5 MB. Free memory was 62.6 MB in the beginning and 97.6 MB in the end (delta: -35.0 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2020-11-29 22:00:32,068 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.74 ms. Allocated memory is still 119.5 MB. Free memory was 97.6 MB in the beginning and 96.8 MB in the end (delta: 729.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:00:32,069 INFO L168 Benchmark]: Boogie Preprocessor took 20.41 ms. Allocated memory is still 119.5 MB. Free memory was 96.8 MB in the beginning and 95.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:00:32,074 INFO L168 Benchmark]: RCFGBuilder took 283.29 ms. Allocated memory is still 119.5 MB. Free memory was 95.5 MB in the beginning and 86.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 22:00:32,075 INFO L168 Benchmark]: BuchiAutomizer took 4711.99 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 86.3 MB in the beginning and 112.8 MB in the end (delta: -26.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:00:32,078 INFO L168 Benchmark]: Witness Printer took 5.81 ms. Allocated memory is still 144.7 MB. Free memory is still 112.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:00:32,086 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 119.5 MB. Free memory is still 78.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 280.18 ms. Allocated memory is still 119.5 MB. Free memory was 62.6 MB in the beginning and 97.6 MB in the end (delta: -35.0 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.74 ms. Allocated memory is still 119.5 MB. Free memory was 97.6 MB in the beginning and 96.8 MB in the end (delta: 729.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.41 ms. Allocated memory is still 119.5 MB. Free memory was 96.8 MB in the beginning and 95.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 283.29 ms. Allocated memory is still 119.5 MB. Free memory was 95.5 MB in the beginning and 86.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 4711.99 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 86.3 MB in the beginning and 112.8 MB in the end (delta: -26.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.81 ms. Allocated memory is still 144.7 MB. Free memory is still 112.8 MB. There was no memory consumed. Max. memory is 16.1 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 5 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 4.6s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 3.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.6s. 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, 28 SDslu, 6 SDs, 0 SdLazy, 47 SolverSat, 6 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: 30ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...