./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/Sunset.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_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/Sunset.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/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 a80d10d797b477078e6dad6d87594a2a0aea1065 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:11:29,259 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:11:29,263 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:11:29,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:11:29,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:11:29,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:11:29,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:11:29,363 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:11:29,367 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:11:29,378 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:11:29,380 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:11:29,381 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:11:29,384 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:11:29,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:11:29,390 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:11:29,393 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:11:29,395 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:11:29,397 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:11:29,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:11:29,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:11:29,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:11:29,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:11:29,422 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:11:29,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:11:29,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:11:29,432 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:11:29,432 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:11:29,435 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:11:29,436 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:11:29,438 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:11:29,439 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:11:29,440 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:11:29,443 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:11:29,445 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:11:29,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:11:29,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:11:29,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:11:29,448 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:11:29,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:11:29,449 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:11:29,450 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:11:29,453 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-30 00:11:29,503 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:11:29,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:11:29,506 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:11:29,507 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:11:29,507 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:11:29,507 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 00:11:29,508 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 00:11:29,508 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 00:11:29,508 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 00:11:29,508 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 00:11:29,510 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 00:11:29,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:11:29,511 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:11:29,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:11:29,511 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:11:29,511 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 00:11:29,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 00:11:29,512 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 00:11:29,512 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:11:29,513 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 00:11:29,513 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:11:29,513 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 00:11:29,513 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:11:29,514 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:11:29,514 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 00:11:29,514 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:11:29,515 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:11:29,515 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:11:29,515 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 00:11:29,517 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 00:11:29,517 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_1c7b4a85-700e-4be4-8b54-ad516429f8d4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a80d10d797b477078e6dad6d87594a2a0aea1065 [2020-11-30 00:11:29,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:11:29,911 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:11:29,917 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:11:29,919 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:11:29,920 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:11:29,921 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/Sunset.c [2020-11-30 00:11:30,018 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/data/9f8623fa9/ac74efca9fbb4406807347d7008f275f/FLAGac1faa9a5 [2020-11-30 00:11:30,558 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:11:30,559 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/sv-benchmarks/c/termination-restricted-15/Sunset.c [2020-11-30 00:11:30,576 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/data/9f8623fa9/ac74efca9fbb4406807347d7008f275f/FLAGac1faa9a5 [2020-11-30 00:11:30,893 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/data/9f8623fa9/ac74efca9fbb4406807347d7008f275f [2020-11-30 00:11:30,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:11:30,898 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:11:30,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:11:30,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:11:30,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:11:30,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:11:30" (1/1) ... [2020-11-30 00:11:30,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16dca7a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:30, skipping insertion in model container [2020-11-30 00:11:30,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:11:30" (1/1) ... [2020-11-30 00:11:30,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:11:30,932 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:11:31,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:11:31,117 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:11:31,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:11:31,174 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:11:31,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:31 WrapperNode [2020-11-30 00:11:31,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:11:31,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:11:31,177 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:11:31,177 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:11:31,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:31" (1/1) ... [2020-11-30 00:11:31,192 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:31" (1/1) ... [2020-11-30 00:11:31,211 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:11:31,212 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:11:31,212 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:11:31,213 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:11:31,223 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:31" (1/1) ... [2020-11-30 00:11:31,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:31" (1/1) ... [2020-11-30 00:11:31,224 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:31" (1/1) ... [2020-11-30 00:11:31,224 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:31" (1/1) ... [2020-11-30 00:11:31,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:31" (1/1) ... [2020-11-30 00:11:31,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:31" (1/1) ... [2020-11-30 00:11:31,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:31" (1/1) ... [2020-11-30 00:11:31,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:11:31,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:11:31,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:11:31,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:11:31,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/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 [2020-11-30 00:11:31,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:11:31,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:11:31,466 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:11:31,466 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-30 00:11:31,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:11:31 BoogieIcfgContainer [2020-11-30 00:11:31,468 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:11:31,470 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 00:11:31,470 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 00:11:31,476 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 00:11:31,477 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:11:31,477 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 12:11:30" (1/3) ... [2020-11-30 00:11:31,479 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5fd3fd41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:11:31, skipping insertion in model container [2020-11-30 00:11:31,479 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:11:31,479 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:31" (2/3) ... [2020-11-30 00:11:31,480 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5fd3fd41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:11:31, skipping insertion in model container [2020-11-30 00:11:31,480 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:11:31,480 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:11:31" (3/3) ... [2020-11-30 00:11:31,481 INFO L373 chiAutomizerObserver]: Analyzing ICFG Sunset.c [2020-11-30 00:11:31,543 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 00:11:31,543 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 00:11:31,544 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 00:11:31,544 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:11:31,544 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:11:31,544 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 00:11:31,544 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:11:31,544 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 00:11:31,557 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-30 00:11:31,577 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 00:11:31,578 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:11:31,578 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:11:31,590 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-30 00:11:31,591 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 00:11:31,591 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 00:11:31,591 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-30 00:11:31,593 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 00:11:31,593 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:11:31,594 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:11:31,594 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-30 00:11:31,594 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 00:11:31,604 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 5#L13-1true [2020-11-30 00:11:31,607 INFO L796 eck$LassoCheckResult]: Loop: 5#L13-1true assume !!(main_~i~0 > 10); 3#L10true assume 25 == main_~i~0;main_~i~0 := 30; 8#L10-2true assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 5#L13-1true [2020-11-30 00:11:31,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:31,622 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-30 00:11:31,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:31,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768801120] [2020-11-30 00:11:31,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:31,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:31,718 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:31,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:31,731 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:31,749 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:11:31,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:31,752 INFO L82 PathProgramCache]: Analyzing trace with hash 39823, now seen corresponding path program 1 times [2020-11-30 00:11:31,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:31,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254562209] [2020-11-30 00:11:31,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:31,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:31,785 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:31,795 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:31,797 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:11:31,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:31,801 INFO L82 PathProgramCache]: Analyzing trace with hash 963344, now seen corresponding path program 1 times [2020-11-30 00:11:31,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:31,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849203330] [2020-11-30 00:11:31,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:31,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:31,812 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:31,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:31,819 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:31,821 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:11:31,954 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:11:31,955 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:11:31,955 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:11:31,955 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:11:31,956 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:11:31,956 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:31,956 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:11:31,956 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:11:31,957 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration1_Loop [2020-11-30 00:11:31,957 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:11:31,957 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:11:31,979 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:31,993 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:32,065 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:32,265 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:11:32,266 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/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 [2020-11-30 00:11:32,277 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:11:32,277 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:11:32,297 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:11:32,297 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_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:32,329 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:11:32,329 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:11:32,344 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:11:32,344 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_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:32,374 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:11:32,374 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/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 [2020-11-30 00:11:32,425 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:11:32,425 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:11:32,437 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:11:32,463 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:11:32,463 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:11:32,463 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:11:32,463 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:11:32,463 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:11:32,464 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:32,464 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:11:32,464 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:11:32,464 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration1_Loop [2020-11-30 00:11:32,464 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:11:32,464 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:11:32,465 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:32,476 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:32,497 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:32,591 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:11:32,597 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/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) [2020-11-30 00:11:32,605 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 [2020-11-30 00:11:32,608 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:11:32,609 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:11:32,609 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:11:32,609 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:11:32,624 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:11:32,624 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:32,639 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/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 [2020-11-30 00:11:32,672 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 [2020-11-30 00:11:32,674 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:11:32,674 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:11:32,674 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:11:32,674 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:11:32,675 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:11:32,685 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:11:32,685 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:11:32,689 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:11:32,702 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 00:11:32,702 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/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) [2020-11-30 00:11:32,711 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:11:32,711 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:11:32,711 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:11:32,712 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 27 Supporting invariants [] Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:32,753 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:11:32,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:32,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:32,841 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:11:32,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:32,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:32,861 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 00:11:32,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:32,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:11:32,937 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 [2020-11-30 00:11:32,938 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 4 states. [2020-11-30 00:11:33,017 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 4 states. Result 27 states and 35 transitions. Complement of second has 6 states. [2020-11-30 00:11:33,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-30 00:11:33,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-30 00:11:33,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2020-11-30 00:11:33,026 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 1 letters. Loop has 3 letters. [2020-11-30 00:11:33,029 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:33,029 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 00:11:33,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:33,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:33,058 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:11:33,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:33,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:33,067 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 00:11:33,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:33,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:11:33,102 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 [2020-11-30 00:11:33,102 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 4 states. [2020-11-30 00:11:33,166 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 4 states. Result 28 states and 38 transitions. Complement of second has 8 states. [2020-11-30 00:11:33,167 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 [2020-11-30 00:11:33,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-30 00:11:33,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2020-11-30 00:11:33,169 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 1 letters. Loop has 3 letters. [2020-11-30 00:11:33,169 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:33,169 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 4 letters. Loop has 3 letters. [2020-11-30 00:11:33,170 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:33,170 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 1 letters. Loop has 6 letters. [2020-11-30 00:11:33,170 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:33,171 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 38 transitions. [2020-11-30 00:11:33,180 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 00:11:33,185 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 11 states and 17 transitions. [2020-11-30 00:11:33,187 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-11-30 00:11:33,187 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-11-30 00:11:33,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 17 transitions. [2020-11-30 00:11:33,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:11:33,188 INFO L691 BuchiCegarLoop]: Abstraction has 11 states and 17 transitions. [2020-11-30 00:11:33,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 17 transitions. [2020-11-30 00:11:33,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2020-11-30 00:11:33,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-30 00:11:33,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 15 transitions. [2020-11-30 00:11:33,216 INFO L714 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2020-11-30 00:11:33,216 INFO L594 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2020-11-30 00:11:33,216 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 00:11:33,216 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 15 transitions. [2020-11-30 00:11:33,217 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 00:11:33,217 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:11:33,218 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:11:33,218 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-30 00:11:33,218 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 00:11:33,219 INFO L794 eck$LassoCheckResult]: Stem: 126#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 127#L13-1 assume !!(main_~i~0 > 10); 130#L10 assume !(25 == main_~i~0); 123#L10-2 [2020-11-30 00:11:33,219 INFO L796 eck$LassoCheckResult]: Loop: 123#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 128#L13-1 assume !!(main_~i~0 > 10); 122#L10 assume 25 == main_~i~0;main_~i~0 := 30; 123#L10-2 [2020-11-30 00:11:33,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:33,219 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2020-11-30 00:11:33,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:33,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125893773] [2020-11-30 00:11:33,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:33,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:33,226 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:33,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:33,228 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:33,230 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:11:33,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:33,230 INFO L82 PathProgramCache]: Analyzing trace with hash 48373, now seen corresponding path program 2 times [2020-11-30 00:11:33,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:33,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995357922] [2020-11-30 00:11:33,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:33,237 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:33,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:33,241 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:33,243 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:11:33,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:33,243 INFO L82 PathProgramCache]: Analyzing trace with hash 925833489, now seen corresponding path program 1 times [2020-11-30 00:11:33,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:33,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497414609] [2020-11-30 00:11:33,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:33,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:33,252 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:33,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:33,257 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:33,259 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:11:33,296 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:11:33,297 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:11:33,297 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:11:33,297 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:11:33,297 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:11:33,297 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:33,297 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:11:33,297 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:11:33,297 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration2_Loop [2020-11-30 00:11:33,298 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:11:33,298 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:11:33,299 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:33,308 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:33,312 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:33,381 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:11:33,381 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/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) [2020-11-30 00:11:33,396 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:11:33,396 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:33,402 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:11:33,402 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_1c7b4a85-700e-4be4-8b54-ad516429f8d4/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) [2020-11-30 00:11:33,459 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:11:33,459 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 [2020-11-30 00:11:33,465 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:11:33,465 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/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) [2020-11-30 00:11:33,519 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:11:33,519 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_1c7b4a85-700e-4be4-8b54-ad516429f8d4/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) [2020-11-30 00:11:33,577 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:11:33,577 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:33,588 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:11:33,630 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:11:33,630 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:11:33,631 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:11:33,631 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:11:33,631 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:11:33,631 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:33,631 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:11:33,631 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:11:33,631 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration2_Loop [2020-11-30 00:11:33,631 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:11:33,632 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:11:33,633 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:33,686 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:33,690 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:33,775 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:11:33,775 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/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) [2020-11-30 00:11:33,784 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 [2020-11-30 00:11:33,786 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:11:33,786 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:11:33,786 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:11:33,786 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:11:33,791 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:11:33,791 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 [2020-11-30 00:11:33,796 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/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) [2020-11-30 00:11:33,850 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 [2020-11-30 00:11:33,852 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:11:33,853 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:11:33,853 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:11:33,853 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:11:33,857 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:11:33,857 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:33,863 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/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) [2020-11-30 00:11:33,915 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 [2020-11-30 00:11:33,917 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:11:33,917 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:11:33,918 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:11:33,918 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:11:33,918 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:11:33,920 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:11:33,920 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:33,924 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:11:33,928 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 00:11:33,928 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/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) [2020-11-30 00:11:33,958 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:11:33,958 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:11:33,958 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:11:33,959 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 28 Supporting invariants [] Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:34,002 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:11:34,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:34,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:34,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:11:34,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:34,084 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 00:11:34,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:34,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:11:34,113 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 [2020-11-30 00:11:34,113 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 15 transitions. cyclomatic complexity: 7 Second operand 3 states. [2020-11-30 00:11:34,172 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 15 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 22 states and 34 transitions. Complement of second has 5 states. [2020-11-30 00:11:34,173 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 [2020-11-30 00:11:34,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 00:11:34,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2020-11-30 00:11:34,175 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 3 letters. Loop has 3 letters. [2020-11-30 00:11:34,175 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:34,175 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 6 letters. Loop has 3 letters. [2020-11-30 00:11:34,175 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:34,175 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 3 letters. Loop has 6 letters. [2020-11-30 00:11:34,176 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:34,176 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 34 transitions. [2020-11-30 00:11:34,178 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-30 00:11:34,179 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 21 states and 33 transitions. [2020-11-30 00:11:34,179 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-11-30 00:11:34,179 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2020-11-30 00:11:34,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 33 transitions. [2020-11-30 00:11:34,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:11:34,180 INFO L691 BuchiCegarLoop]: Abstraction has 21 states and 33 transitions. [2020-11-30 00:11:34,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 33 transitions. [2020-11-30 00:11:34,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2020-11-30 00:11:34,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-30 00:11:34,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 30 transitions. [2020-11-30 00:11:34,184 INFO L714 BuchiCegarLoop]: Abstraction has 19 states and 30 transitions. [2020-11-30 00:11:34,184 INFO L594 BuchiCegarLoop]: Abstraction has 19 states and 30 transitions. [2020-11-30 00:11:34,184 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-30 00:11:34,184 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 30 transitions. [2020-11-30 00:11:34,192 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-30 00:11:34,193 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:11:34,193 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:11:34,193 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-30 00:11:34,193 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 00:11:34,194 INFO L794 eck$LassoCheckResult]: Stem: 197#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 198#L13-1 assume !!(main_~i~0 > 10); 205#L10 assume 25 == main_~i~0;main_~i~0 := 30; 206#L10-2 assume !(main_~i~0 <= 30);main_~i~0 := 20; 199#L13-1 [2020-11-30 00:11:34,194 INFO L796 eck$LassoCheckResult]: Loop: 199#L13-1 assume !!(main_~i~0 > 10); 200#L10 assume 25 == main_~i~0;main_~i~0 := 30; 210#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 199#L13-1 [2020-11-30 00:11:34,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:34,195 INFO L82 PathProgramCache]: Analyzing trace with hash 963346, now seen corresponding path program 1 times [2020-11-30 00:11:34,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:34,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434186769] [2020-11-30 00:11:34,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:34,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:34,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:11:34,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434186769] [2020-11-30 00:11:34,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:11:34,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:11:34,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163518697] [2020-11-30 00:11:34,285 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-30 00:11:34,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:34,286 INFO L82 PathProgramCache]: Analyzing trace with hash 39823, now seen corresponding path program 3 times [2020-11-30 00:11:34,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:34,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268181999] [2020-11-30 00:11:34,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:34,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:34,296 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:34,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:34,301 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:34,303 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:11:34,354 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:11:34,355 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:11:34,355 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:11:34,355 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:11:34,355 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:11:34,355 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:34,355 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:11:34,355 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:11:34,356 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration3_Loop [2020-11-30 00:11:34,356 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:11:34,356 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:11:34,357 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:34,365 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:34,382 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:34,469 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:11:34,470 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/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 [2020-11-30 00:11:34,476 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:11:34,477 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:11:34,481 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:11:34,481 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_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:34,511 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:11:34,511 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:34,543 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:11:34,543 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:11:34,548 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:11:34,574 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:11:34,574 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:11:34,575 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:11:34,575 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:11:34,575 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:11:34,575 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:34,575 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:11:34,575 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:11:34,575 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration3_Loop [2020-11-30 00:11:34,575 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:11:34,575 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:11:34,577 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:34,586 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:34,602 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:34,724 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:11:34,724 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/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) [2020-11-30 00:11:34,743 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:34,745 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:11:34,746 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:11:34,746 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:11:34,746 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:11:34,746 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:11:34,748 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:11:34,748 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:11:34,753 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:11:34,760 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 00:11:34,760 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/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) [2020-11-30 00:11:34,774 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:11:34,774 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:11:34,774 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:11:34,775 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 27 Supporting invariants [] Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:34,820 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:11:34,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:34,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:11:34,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:34,870 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 00:11:34,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:34,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:11:34,895 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 [2020-11-30 00:11:34,896 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 30 transitions. cyclomatic complexity: 15 Second operand 4 states. [2020-11-30 00:11:34,933 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 30 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 42 states and 66 transitions. Complement of second has 5 states. [2020-11-30 00:11:34,936 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 [2020-11-30 00:11:34,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-30 00:11:34,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-11-30 00:11:34,937 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 3 letters. [2020-11-30 00:11:34,937 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:34,937 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 00:11:34,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:34,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:34,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:11:34,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:34,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:34,988 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 00:11:34,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:35,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:11:35,016 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 [2020-11-30 00:11:35,016 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 30 transitions. cyclomatic complexity: 15 Second operand 4 states. [2020-11-30 00:11:35,064 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 30 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 44 states and 70 transitions. Complement of second has 7 states. [2020-11-30 00:11:35,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-30 00:11:35,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-30 00:11:35,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2020-11-30 00:11:35,068 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 4 letters. Loop has 3 letters. [2020-11-30 00:11:35,068 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:35,069 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-30 00:11:35,069 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:35,069 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 4 letters. Loop has 6 letters. [2020-11-30 00:11:35,069 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:35,070 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 70 transitions. [2020-11-30 00:11:35,072 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-11-30 00:11:35,074 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 42 states and 68 transitions. [2020-11-30 00:11:35,074 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2020-11-30 00:11:35,074 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2020-11-30 00:11:35,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 68 transitions. [2020-11-30 00:11:35,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:11:35,075 INFO L691 BuchiCegarLoop]: Abstraction has 42 states and 68 transitions. [2020-11-30 00:11:35,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 68 transitions. [2020-11-30 00:11:35,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-11-30 00:11:35,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-30 00:11:35,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 63 transitions. [2020-11-30 00:11:35,092 INFO L714 BuchiCegarLoop]: Abstraction has 40 states and 63 transitions. [2020-11-30 00:11:35,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:11:35,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:11:35,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:11:35,098 INFO L87 Difference]: Start difference. First operand 40 states and 63 transitions. Second operand 3 states. [2020-11-30 00:11:35,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:11:35,130 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2020-11-30 00:11:35,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:11:35,133 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 39 transitions. [2020-11-30 00:11:35,135 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-30 00:11:35,136 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 26 states and 36 transitions. [2020-11-30 00:11:35,136 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2020-11-30 00:11:35,137 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2020-11-30 00:11:35,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 36 transitions. [2020-11-30 00:11:35,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:11:35,137 INFO L691 BuchiCegarLoop]: Abstraction has 26 states and 36 transitions. [2020-11-30 00:11:35,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 36 transitions. [2020-11-30 00:11:35,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2020-11-30 00:11:35,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-30 00:11:35,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 30 transitions. [2020-11-30 00:11:35,140 INFO L714 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2020-11-30 00:11:35,140 INFO L594 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2020-11-30 00:11:35,140 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-30 00:11:35,141 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 30 transitions. [2020-11-30 00:11:35,141 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 00:11:35,142 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:11:35,142 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:11:35,142 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1] [2020-11-30 00:11:35,142 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 00:11:35,143 INFO L794 eck$LassoCheckResult]: Stem: 441#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 442#L13-1 assume !!(main_~i~0 > 10); 453#L10 assume !(25 == main_~i~0); 457#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 449#L13-1 assume !!(main_~i~0 > 10); 437#L10 assume !(25 == main_~i~0); 438#L10-2 [2020-11-30 00:11:35,143 INFO L796 eck$LassoCheckResult]: Loop: 438#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 443#L13-1 assume !!(main_~i~0 > 10); 444#L10 assume 25 == main_~i~0;main_~i~0 := 30; 438#L10-2 [2020-11-30 00:11:35,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:35,143 INFO L82 PathProgramCache]: Analyzing trace with hash 925833491, now seen corresponding path program 1 times [2020-11-30 00:11:35,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:35,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990132597] [2020-11-30 00:11:35,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:35,164 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:35,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:35,168 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:35,169 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:11:35,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:35,170 INFO L82 PathProgramCache]: Analyzing trace with hash 48373, now seen corresponding path program 4 times [2020-11-30 00:11:35,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:35,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585235537] [2020-11-30 00:11:35,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:35,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:35,182 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:35,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:35,189 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:35,192 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:11:35,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:35,193 INFO L82 PathProgramCache]: Analyzing trace with hash -774425949, now seen corresponding path program 2 times [2020-11-30 00:11:35,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:35,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881266491] [2020-11-30 00:11:35,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:35,218 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:35,223 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:35,224 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:11:35,255 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:11:35,255 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:11:35,255 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:11:35,255 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:11:35,255 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:11:35,255 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:35,256 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:11:35,256 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:11:35,256 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration4_Loop [2020-11-30 00:11:35,256 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:11:35,256 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:11:35,257 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:35,267 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:35,273 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:35,328 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:11:35,328 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/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) [2020-11-30 00:11:35,336 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:11:35,337 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:35,365 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:11:35,365 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:11:35,375 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:11:35,396 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:11:35,396 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:11:35,397 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:11:35,397 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:11:35,397 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:11:35,397 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:35,397 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:11:35,397 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:11:35,397 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration4_Loop [2020-11-30 00:11:35,397 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:11:35,397 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:11:35,398 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:35,413 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:35,433 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:35,548 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:11:35,548 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/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) [2020-11-30 00:11:35,559 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 [2020-11-30 00:11:35,560 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:11:35,561 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:11:35,561 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:11:35,561 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:11:35,561 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:11:35,565 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:11:35,566 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:35,575 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:11:35,579 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 00:11:35,579 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:11:35,583 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:11:35,583 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:11:35,583 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:11:35,584 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 28 Supporting invariants [] Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:35,614 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:11:35,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:35,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:11:35,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:35,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:35,667 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 00:11:35,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:35,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:11:35,682 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 [2020-11-30 00:11:35,682 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand 3 states. [2020-11-30 00:11:35,719 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 28 states and 41 transitions. Complement of second has 5 states. [2020-11-30 00:11:35,719 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 [2020-11-30 00:11:35,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 00:11:35,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-11-30 00:11:35,720 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 3 letters. [2020-11-30 00:11:35,720 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:35,720 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 00:11:35,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:35,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:35,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:11:35,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:35,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:35,757 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 00:11:35,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:35,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:11:35,775 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 [2020-11-30 00:11:35,775 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand 3 states. [2020-11-30 00:11:35,801 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 28 states and 41 transitions. Complement of second has 5 states. [2020-11-30 00:11:35,801 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 [2020-11-30 00:11:35,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 00:11:35,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-11-30 00:11:35,802 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 3 letters. [2020-11-30 00:11:35,802 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:35,802 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 00:11:35,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:35,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:35,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:11:35,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:35,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:35,840 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 00:11:35,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:35,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:11:35,869 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 [2020-11-30 00:11:35,870 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand 3 states. [2020-11-30 00:11:35,906 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 31 states and 47 transitions. Complement of second has 6 states. [2020-11-30 00:11:35,907 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 [2020-11-30 00:11:35,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 00:11:35,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2020-11-30 00:11:35,908 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2020-11-30 00:11:35,908 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:35,908 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 9 letters. Loop has 3 letters. [2020-11-30 00:11:35,909 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:35,909 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 6 letters. [2020-11-30 00:11:35,909 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:35,909 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 47 transitions. [2020-11-30 00:11:35,911 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-30 00:11:35,912 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 26 states and 37 transitions. [2020-11-30 00:11:35,912 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-11-30 00:11:35,912 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2020-11-30 00:11:35,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 37 transitions. [2020-11-30 00:11:35,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:11:35,920 INFO L691 BuchiCegarLoop]: Abstraction has 26 states and 37 transitions. [2020-11-30 00:11:35,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 37 transitions. [2020-11-30 00:11:35,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 13. [2020-11-30 00:11:35,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-30 00:11:35,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2020-11-30 00:11:35,923 INFO L714 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2020-11-30 00:11:35,923 INFO L594 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2020-11-30 00:11:35,924 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-30 00:11:35,924 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 19 transitions. [2020-11-30 00:11:35,925 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-30 00:11:35,925 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:11:35,925 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:11:35,925 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-30 00:11:35,926 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 00:11:35,926 INFO L794 eck$LassoCheckResult]: Stem: 664#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 665#L13-1 assume !!(main_~i~0 > 10); 671#L10 assume !(25 == main_~i~0); 672#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 666#L13-1 [2020-11-30 00:11:35,926 INFO L796 eck$LassoCheckResult]: Loop: 666#L13-1 assume !!(main_~i~0 > 10); 660#L10 assume !(25 == main_~i~0); 661#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 666#L13-1 [2020-11-30 00:11:35,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:35,927 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 2 times [2020-11-30 00:11:35,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:35,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066071876] [2020-11-30 00:11:35,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:35,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:35,932 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:35,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:35,936 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:35,937 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:11:35,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:35,939 INFO L82 PathProgramCache]: Analyzing trace with hash 39885, now seen corresponding path program 1 times [2020-11-30 00:11:35,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:35,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273429844] [2020-11-30 00:11:35,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:35,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:35,946 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:35,949 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:35,950 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:11:35,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:35,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1363932832, now seen corresponding path program 3 times [2020-11-30 00:11:35,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:35,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766670833] [2020-11-30 00:11:35,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:35,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:35,959 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:35,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:35,964 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:35,965 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:11:35,999 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:11:35,999 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:11:35,999 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:11:35,999 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:11:35,999 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:11:36,000 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:36,000 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:11:36,000 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:11:36,000 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration5_Loop [2020-11-30 00:11:36,000 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:11:36,000 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:11:36,001 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:36,023 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:36,029 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:36,148 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:11:36,149 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:36,154 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:11:36,155 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:11:36,239 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:36,239 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:11:36,284 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:11:36,286 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:11:36,286 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:11:36,286 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:11:36,286 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:11:36,286 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:11:36,286 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:36,286 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:11:36,287 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:11:36,287 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration5_Loop [2020-11-30 00:11:36,287 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:11:36,287 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:11:36,288 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:36,292 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:36,314 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:36,443 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:11:36,443 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:36,463 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 [2020-11-30 00:11:36,465 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:11:36,465 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:11:36,465 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:11:36,465 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:11:36,469 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:11:36,469 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:11:36,473 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:36,514 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 [2020-11-30 00:11:36,515 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:11:36,516 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:11:36,516 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:11:36,516 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-30 00:11:36,516 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:11:36,519 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-11-30 00:11:36,519 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:11:36,523 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:11:36,525 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-30 00:11:36,526 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:36,528 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:11:36,528 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:11:36,528 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:11:36,529 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-11-30 00:11:36,554 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:11:36,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:36,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:36,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:11:36,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:36,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:36,600 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:11:36,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:36,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:11:36,612 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 [2020-11-30 00:11:36,612 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 8 Second operand 3 states. [2020-11-30 00:11:36,637 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 35 states and 47 transitions. Complement of second has 5 states. [2020-11-30 00:11:36,638 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 [2020-11-30 00:11:36,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 00:11:36,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-11-30 00:11:36,639 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 3 letters. [2020-11-30 00:11:36,639 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:36,639 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-30 00:11:36,640 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:36,640 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 6 letters. [2020-11-30 00:11:36,640 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:36,640 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 47 transitions. [2020-11-30 00:11:36,642 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-30 00:11:36,643 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 29 states and 39 transitions. [2020-11-30 00:11:36,643 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-11-30 00:11:36,643 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-11-30 00:11:36,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 39 transitions. [2020-11-30 00:11:36,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:11:36,644 INFO L691 BuchiCegarLoop]: Abstraction has 29 states and 39 transitions. [2020-11-30 00:11:36,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 39 transitions. [2020-11-30 00:11:36,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2020-11-30 00:11:36,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-30 00:11:36,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2020-11-30 00:11:36,648 INFO L714 BuchiCegarLoop]: Abstraction has 24 states and 34 transitions. [2020-11-30 00:11:36,648 INFO L594 BuchiCegarLoop]: Abstraction has 24 states and 34 transitions. [2020-11-30 00:11:36,648 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-30 00:11:36,648 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 34 transitions. [2020-11-30 00:11:36,649 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-30 00:11:36,649 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:11:36,649 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:11:36,650 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1] [2020-11-30 00:11:36,650 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 00:11:36,650 INFO L794 eck$LassoCheckResult]: Stem: 753#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 754#L13-1 assume !!(main_~i~0 > 10); 768#L10 assume !(25 == main_~i~0); 769#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 756#L13-1 assume !!(main_~i~0 > 10); 757#L10 assume 25 == main_~i~0;main_~i~0 := 30; 760#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 761#L13-1 [2020-11-30 00:11:36,651 INFO L796 eck$LassoCheckResult]: Loop: 761#L13-1 assume !!(main_~i~0 > 10); 771#L10 assume !(25 == main_~i~0); 773#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 761#L13-1 [2020-11-30 00:11:36,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:36,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1363932894, now seen corresponding path program 3 times [2020-11-30 00:11:36,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:36,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151837370] [2020-11-30 00:11:36,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:36,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:36,658 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:36,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:36,662 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:36,664 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:11:36,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:36,665 INFO L82 PathProgramCache]: Analyzing trace with hash 39885, now seen corresponding path program 2 times [2020-11-30 00:11:36,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:36,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133570249] [2020-11-30 00:11:36,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:36,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:36,670 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:36,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:36,672 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:36,673 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:11:36,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:36,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1760752396, now seen corresponding path program 4 times [2020-11-30 00:11:36,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:36,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078221694] [2020-11-30 00:11:36,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:36,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:36,681 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:36,687 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:36,688 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:11:36,712 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:11:36,712 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:11:36,712 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:11:36,713 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:11:36,713 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:11:36,713 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:36,713 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:11:36,713 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:11:36,713 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration6_Loop [2020-11-30 00:11:36,713 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:11:36,713 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:11:36,715 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:36,729 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:36,733 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:36,862 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:11:36,862 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:11:36,873 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:11:36,873 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:36,915 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:11:36,915 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:11:36,981 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:11:36,984 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:11:36,984 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:11:36,984 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:11:36,984 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:11:36,985 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:11:36,985 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:36,985 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:11:36,985 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:11:36,985 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration6_Loop [2020-11-30 00:11:36,985 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:11:36,985 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:11:36,986 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:37,006 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:37,011 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:37,195 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:11:37,196 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:11:37,199 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 [2020-11-30 00:11:37,202 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:11:37,202 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:11:37,202 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:11:37,202 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-30 00:11:37,202 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:11:37,205 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-11-30 00:11:37,206 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:37,210 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:11:37,214 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-30 00:11:37,214 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:11:37,222 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:11:37,223 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:11:37,223 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:11:37,223 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:37,253 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:11:37,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:37,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:37,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:11:37,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:37,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:37,287 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:11:37,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:37,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:11:37,299 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 [2020-11-30 00:11:37,300 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13 Second operand 3 states. [2020-11-30 00:11:37,320 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 35 states and 47 transitions. Complement of second has 5 states. [2020-11-30 00:11:37,321 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 [2020-11-30 00:11:37,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 00:11:37,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-11-30 00:11:37,322 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-30 00:11:37,322 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:37,322 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 00:11:37,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:37,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:37,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:11:37,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:37,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:37,359 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:11:37,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:37,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:11:37,371 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 [2020-11-30 00:11:37,372 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13 Second operand 3 states. [2020-11-30 00:11:37,383 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 35 states and 47 transitions. Complement of second has 5 states. [2020-11-30 00:11:37,384 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 [2020-11-30 00:11:37,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 00:11:37,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-11-30 00:11:37,384 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-30 00:11:37,384 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:37,384 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 00:11:37,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:37,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:37,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:11:37,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:37,413 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:11:37,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:37,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:11:37,426 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 [2020-11-30 00:11:37,426 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13 Second operand 3 states. [2020-11-30 00:11:37,444 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 37 states and 52 transitions. Complement of second has 4 states. [2020-11-30 00:11:37,446 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 [2020-11-30 00:11:37,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 00:11:37,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2020-11-30 00:11:37,447 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-30 00:11:37,447 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:37,447 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 10 letters. Loop has 3 letters. [2020-11-30 00:11:37,448 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:37,448 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 6 letters. [2020-11-30 00:11:37,448 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:37,448 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 52 transitions. [2020-11-30 00:11:37,449 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-11-30 00:11:37,450 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 28 states and 38 transitions. [2020-11-30 00:11:37,450 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-11-30 00:11:37,450 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-11-30 00:11:37,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 38 transitions. [2020-11-30 00:11:37,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:11:37,451 INFO L691 BuchiCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-11-30 00:11:37,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 38 transitions. [2020-11-30 00:11:37,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 18. [2020-11-30 00:11:37,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-30 00:11:37,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 26 transitions. [2020-11-30 00:11:37,453 INFO L714 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2020-11-30 00:11:37,453 INFO L594 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2020-11-30 00:11:37,453 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-11-30 00:11:37,453 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 26 transitions. [2020-11-30 00:11:37,454 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-11-30 00:11:37,454 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:11:37,454 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:11:37,455 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-30 00:11:37,455 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1] [2020-11-30 00:11:37,455 INFO L794 eck$LassoCheckResult]: Stem: 1006#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 1007#L13-1 assume !!(main_~i~0 > 10); 1012#L10 assume !(25 == main_~i~0); 1013#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1008#L13-1 [2020-11-30 00:11:37,455 INFO L796 eck$LassoCheckResult]: Loop: 1008#L13-1 assume !!(main_~i~0 > 10); 1005#L10 assume !(25 == main_~i~0); 1004#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1011#L13-1 assume !!(main_~i~0 > 10); 1015#L10 assume 25 == main_~i~0;main_~i~0 := 30; 1014#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1008#L13-1 [2020-11-30 00:11:37,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:37,455 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 4 times [2020-11-30 00:11:37,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:37,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130722447] [2020-11-30 00:11:37,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:37,460 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:37,464 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:37,465 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:11:37,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:37,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1188224067, now seen corresponding path program 1 times [2020-11-30 00:11:37,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:37,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963864137] [2020-11-30 00:11:37,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:37,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:37,471 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:37,475 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:37,476 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:11:37,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:37,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1762599376, now seen corresponding path program 5 times [2020-11-30 00:11:37,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:37,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382332022] [2020-11-30 00:11:37,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:37,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:37,484 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:37,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:37,490 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:37,491 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:11:37,549 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:11:37,549 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:11:37,549 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:11:37,549 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:11:37,550 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:11:37,550 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:37,550 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:11:37,550 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:11:37,550 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration7_Loop [2020-11-30 00:11:37,550 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:11:37,550 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:11:37,551 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:37,560 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:37,565 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:37,642 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:11:37,642 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:11:37,650 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:11:37,650 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:11:37,700 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:11:37,701 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:37,707 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:11:37,746 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:11:37,746 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:11:37,746 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:11:37,746 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:11:37,746 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:11:37,746 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:37,747 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:11:37,747 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:11:37,747 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration7_Loop [2020-11-30 00:11:37,747 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:11:37,747 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:11:37,748 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:37,756 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:37,760 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:37,839 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:11:37,839 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:37,842 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 [2020-11-30 00:11:37,844 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:11:37,844 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:11:37,844 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:11:37,844 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:11:37,844 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:11:37,845 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:11:37,845 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:11:37,853 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:11:37,857 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 00:11:37,857 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:11:37,860 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:11:37,860 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:11:37,860 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:11:37,861 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 55 Supporting invariants [] Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:37,899 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:11:37,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:37,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:37,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:11:37,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:37,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:37,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 00:11:37,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:38,049 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:11:38,050 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-30 00:11:38,050 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 10 Second operand 5 states. [2020-11-30 00:11:38,109 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 10. Second operand 5 states. Result 55 states and 74 transitions. Complement of second has 7 states. [2020-11-30 00:11:38,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-30 00:11:38,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-30 00:11:38,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2020-11-30 00:11:38,110 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 6 letters. [2020-11-30 00:11:38,111 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:38,111 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 00:11:38,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:38,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:38,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:11:38,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:38,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:38,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 00:11:38,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:38,205 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:11:38,205 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-30 00:11:38,206 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 10 Second operand 5 states. [2020-11-30 00:11:38,257 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 10. Second operand 5 states. Result 48 states and 64 transitions. Complement of second has 9 states. [2020-11-30 00:11:38,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-11-30 00:11:38,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-30 00:11:38,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2020-11-30 00:11:38,258 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 4 letters. Loop has 6 letters. [2020-11-30 00:11:38,259 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:38,259 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 10 letters. Loop has 6 letters. [2020-11-30 00:11:38,259 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:38,259 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 4 letters. Loop has 12 letters. [2020-11-30 00:11:38,259 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:38,259 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 64 transitions. [2020-11-30 00:11:38,260 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-11-30 00:11:38,261 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 38 states and 52 transitions. [2020-11-30 00:11:38,261 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-11-30 00:11:38,261 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-11-30 00:11:38,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 52 transitions. [2020-11-30 00:11:38,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:11:38,262 INFO L691 BuchiCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-11-30 00:11:38,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 52 transitions. [2020-11-30 00:11:38,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2020-11-30 00:11:38,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-30 00:11:38,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 44 transitions. [2020-11-30 00:11:38,265 INFO L714 BuchiCegarLoop]: Abstraction has 31 states and 44 transitions. [2020-11-30 00:11:38,265 INFO L594 BuchiCegarLoop]: Abstraction has 31 states and 44 transitions. [2020-11-30 00:11:38,265 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-11-30 00:11:38,266 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 44 transitions. [2020-11-30 00:11:38,266 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-11-30 00:11:38,267 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:11:38,267 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:11:38,267 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 3, 1, 1] [2020-11-30 00:11:38,268 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1] [2020-11-30 00:11:38,268 INFO L794 eck$LassoCheckResult]: Stem: 1226#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 1227#L13-1 assume !!(main_~i~0 > 10); 1234#L10 assume !(25 == main_~i~0); 1235#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1228#L13-1 assume !!(main_~i~0 > 10); 1230#L10 assume !(25 == main_~i~0); 1251#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1247#L13-1 assume !!(main_~i~0 > 10); 1248#L10 assume !(25 == main_~i~0); 1246#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1238#L13-1 assume !!(main_~i~0 > 10); 1245#L10 assume 25 == main_~i~0;main_~i~0 := 30; 1236#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1237#L13-1 [2020-11-30 00:11:38,268 INFO L796 eck$LassoCheckResult]: Loop: 1237#L13-1 assume !!(main_~i~0 > 10); 1248#L10 assume !(25 == main_~i~0); 1246#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1238#L13-1 assume !!(main_~i~0 > 10); 1245#L10 assume 25 == main_~i~0;main_~i~0 := 30; 1236#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1237#L13-1 [2020-11-30 00:11:38,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:38,268 INFO L82 PathProgramCache]: Analyzing trace with hash -670293406, now seen corresponding path program 6 times [2020-11-30 00:11:38,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:38,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961196358] [2020-11-30 00:11:38,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:38,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:38,277 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:38,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:38,283 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:38,285 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:11:38,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:38,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1188224067, now seen corresponding path program 2 times [2020-11-30 00:11:38,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:38,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819262444] [2020-11-30 00:11:38,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:38,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:38,291 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:38,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:38,295 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:38,296 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:11:38,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:38,297 INFO L82 PathProgramCache]: Analyzing trace with hash -2063994396, now seen corresponding path program 7 times [2020-11-30 00:11:38,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:38,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299266439] [2020-11-30 00:11:38,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:38,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:38,338 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-30 00:11:38,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299266439] [2020-11-30 00:11:38,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595647285] [2020-11-30 00:11:38,339 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:11:38,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:38,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:11:38,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:38,406 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-30 00:11:38,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:11:38,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-11-30 00:11:38,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464153490] [2020-11-30 00:11:38,455 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:11:38,455 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:11:38,455 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:11:38,455 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:11:38,455 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:11:38,455 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:38,456 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:11:38,456 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:11:38,456 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration8_Loop [2020-11-30 00:11:38,456 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:11:38,456 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:11:38,457 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:38,463 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:38,472 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:38,534 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:11:38,534 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:11:38,542 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:11:38,543 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:38,547 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:11:38,548 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_15=1} Honda state: {v_rep~unnamed0~0~true_15=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:38,592 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:11:38,592 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:38,622 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:11:38,623 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:11:38,629 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:11:38,655 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:11:38,655 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:11:38,655 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:11:38,655 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:11:38,655 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:11:38,655 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:38,655 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:11:38,655 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:11:38,655 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration8_Loop [2020-11-30 00:11:38,655 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:11:38,656 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:11:38,656 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:38,661 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:38,682 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:38,727 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:11:38,727 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:38,733 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 [2020-11-30 00:11:38,734 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:11:38,734 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:11:38,735 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:11:38,735 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:11:38,737 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:11:38,737 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:11:38,745 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:38,774 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 [2020-11-30 00:11:38,776 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:11:38,776 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:11:38,776 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:11:38,776 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:11:38,776 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:11:38,777 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:11:38,777 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:11:38,793 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:11:38,796 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 00:11:38,796 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:38,799 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:11:38,799 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:11:38,799 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:11:38,799 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 55 Supporting invariants [] [2020-11-30 00:11:38,824 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:11:38,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:38,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:38,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:11:38,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:38,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 00:11:38,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:38,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:11:38,960 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-30 00:11:38,960 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17 Second operand 5 states. [2020-11-30 00:11:38,997 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17. Second operand 5 states. Result 81 states and 107 transitions. Complement of second has 7 states. [2020-11-30 00:11:38,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-30 00:11:38,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-30 00:11:38,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2020-11-30 00:11:38,998 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 13 letters. Loop has 6 letters. [2020-11-30 00:11:38,999 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:38,999 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 00:11:39,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:39,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:11:39,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:39,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:39,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 00:11:39,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:39,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:11:39,109 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-30 00:11:39,109 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17 Second operand 5 states. [2020-11-30 00:11:39,178 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17. Second operand 5 states. Result 55 states and 74 transitions. Complement of second has 9 states. [2020-11-30 00:11:39,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-11-30 00:11:39,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-30 00:11:39,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2020-11-30 00:11:39,180 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 13 letters. Loop has 6 letters. [2020-11-30 00:11:39,180 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:39,180 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 00:11:39,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:39,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:39,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:11:39,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:39,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:39,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 00:11:39,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:39,258 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:11:39,258 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 3 loop predicates [2020-11-30 00:11:39,258 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17 Second operand 5 states. [2020-11-30 00:11:39,295 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17. Second operand 5 states. Result 101 states and 141 transitions. Complement of second has 10 states. [2020-11-30 00:11:39,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-30 00:11:39,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-30 00:11:39,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2020-11-30 00:11:39,296 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 13 letters. Loop has 6 letters. [2020-11-30 00:11:39,297 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:39,297 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 00:11:39,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:39,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:39,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:11:39,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:39,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:39,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 00:11:39,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:39,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:11:39,382 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-30 00:11:39,382 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17 Second operand 5 states. [2020-11-30 00:11:39,442 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17. Second operand 5 states. Result 76 states and 101 transitions. Complement of second has 11 states. [2020-11-30 00:11:39,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-11-30 00:11:39,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-30 00:11:39,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2020-11-30 00:11:39,443 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 13 letters. Loop has 6 letters. [2020-11-30 00:11:39,444 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:39,444 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 19 letters. Loop has 6 letters. [2020-11-30 00:11:39,444 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:39,444 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 13 letters. Loop has 12 letters. [2020-11-30 00:11:39,445 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:39,445 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 76 states and 101 transitions. [2020-11-30 00:11:39,447 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2020-11-30 00:11:39,448 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 76 states to 49 states and 65 transitions. [2020-11-30 00:11:39,449 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-11-30 00:11:39,449 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-11-30 00:11:39,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 65 transitions. [2020-11-30 00:11:39,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:11:39,449 INFO L691 BuchiCegarLoop]: Abstraction has 49 states and 65 transitions. [2020-11-30 00:11:39,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 65 transitions. [2020-11-30 00:11:39,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 27. [2020-11-30 00:11:39,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 00:11:39,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 39 transitions. [2020-11-30 00:11:39,452 INFO L714 BuchiCegarLoop]: Abstraction has 27 states and 39 transitions. [2020-11-30 00:11:39,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:11:39,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:11:39,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:11:39,454 INFO L87 Difference]: Start difference. First operand 27 states and 39 transitions. Second operand 5 states. [2020-11-30 00:11:39,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:11:39,493 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2020-11-30 00:11:39,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:11:39,493 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 54 transitions. [2020-11-30 00:11:39,494 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2020-11-30 00:11:39,495 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 34 states and 42 transitions. [2020-11-30 00:11:39,495 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2020-11-30 00:11:39,496 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2020-11-30 00:11:39,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 42 transitions. [2020-11-30 00:11:39,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:11:39,496 INFO L691 BuchiCegarLoop]: Abstraction has 34 states and 42 transitions. [2020-11-30 00:11:39,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 42 transitions. [2020-11-30 00:11:39,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 27. [2020-11-30 00:11:39,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 00:11:39,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2020-11-30 00:11:39,500 INFO L714 BuchiCegarLoop]: Abstraction has 27 states and 34 transitions. [2020-11-30 00:11:39,500 INFO L594 BuchiCegarLoop]: Abstraction has 27 states and 34 transitions. [2020-11-30 00:11:39,500 INFO L427 BuchiCegarLoop]: ======== Iteration 9============ [2020-11-30 00:11:39,500 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 34 transitions. [2020-11-30 00:11:39,501 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-11-30 00:11:39,501 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:11:39,501 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:11:39,502 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-30 00:11:39,502 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [3, 3, 2, 1] [2020-11-30 00:11:39,502 INFO L794 eck$LassoCheckResult]: Stem: 1992#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 1993#L13-1 assume !!(main_~i~0 > 10); 2008#L10 assume !(25 == main_~i~0); 2010#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1994#L13-1 [2020-11-30 00:11:39,502 INFO L796 eck$LassoCheckResult]: Loop: 1994#L13-1 assume !!(main_~i~0 > 10); 1988#L10 assume 25 == main_~i~0;main_~i~0 := 30; 1989#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1996#L13-1 assume !!(main_~i~0 > 10); 1990#L10 assume !(25 == main_~i~0); 1991#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1997#L13-1 assume !!(main_~i~0 > 10); 2014#L10 assume !(25 == main_~i~0); 2013#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1994#L13-1 [2020-11-30 00:11:39,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:39,503 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 5 times [2020-11-30 00:11:39,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:39,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336299173] [2020-11-30 00:11:39,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:39,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:39,512 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:39,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:39,515 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:39,518 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:11:39,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:39,520 INFO L82 PathProgramCache]: Analyzing trace with hash 73930127, now seen corresponding path program 3 times [2020-11-30 00:11:39,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:39,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216101486] [2020-11-30 00:11:39,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:39,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:39,532 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:39,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:39,541 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:39,543 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:11:39,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:39,555 INFO L82 PathProgramCache]: Analyzing trace with hash 139053282, now seen corresponding path program 8 times [2020-11-30 00:11:39,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:39,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721120880] [2020-11-30 00:11:39,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:39,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:39,562 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:39,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:39,576 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:39,578 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:11:39,653 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:11:39,654 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:11:39,654 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:11:39,654 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:11:39,654 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:11:39,654 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:39,654 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:11:39,654 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:11:39,654 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration9_Loop [2020-11-30 00:11:39,654 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:11:39,655 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:11:39,655 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:39,661 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:39,671 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:39,729 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:11:39,730 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:39,734 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:11:39,734 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:11:39,737 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:11:39,737 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_17=1} Honda state: {v_rep~unnamed0~0~true_17=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:39,769 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:11:39,769 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:39,800 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:11:39,800 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:11:39,812 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:11:39,837 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:11:39,837 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:11:39,838 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:11:39,838 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:11:39,838 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:11:39,838 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:39,838 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:11:39,838 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:11:39,838 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration9_Loop [2020-11-30 00:11:39,838 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:11:39,838 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:11:39,839 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:39,853 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:39,857 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:39,917 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:11:39,917 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:11:39,922 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 [2020-11-30 00:11:39,925 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:11:39,925 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:11:39,925 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:11:39,925 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:11:39,929 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:11:39,930 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:39,935 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:11:39,967 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 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:39,969 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:11:39,969 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:11:39,969 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:11:39,969 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:11:39,971 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:11:39,971 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:11:39,983 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/z3 Starting monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:11:40,034 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:11:40,036 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:11:40,036 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:11:40,036 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:11:40,036 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:11:40,036 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:11:40,038 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:11:40,038 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:40,041 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:11:40,045 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 00:11:40,046 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/z3 Starting monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:40,051 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:11:40,051 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:11:40,051 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:11:40,051 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 26 Supporting invariants [] [2020-11-30 00:11:40,077 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:11:40,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:40,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:40,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:11:40,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:40,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:40,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 00:11:40,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:40,191 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:11:40,192 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2020-11-30 00:11:40,192 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand 6 states. [2020-11-30 00:11:40,208 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8. Second operand 6 states. Result 39 states and 47 transitions. Complement of second has 5 states. [2020-11-30 00:11:40,209 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 [2020-11-30 00:11:40,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-30 00:11:40,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-11-30 00:11:40,209 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 9 letters. [2020-11-30 00:11:40,210 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:40,210 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 00:11:40,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:40,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:40,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:11:40,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:40,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:40,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 00:11:40,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:40,322 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:11:40,323 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 4 loop predicates [2020-11-30 00:11:40,323 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand 6 states. [2020-11-30 00:11:40,353 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8. Second operand 6 states. Result 40 states and 49 transitions. Complement of second has 7 states. [2020-11-30 00:11:40,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-30 00:11:40,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-30 00:11:40,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2020-11-30 00:11:40,354 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 4 letters. Loop has 9 letters. [2020-11-30 00:11:40,354 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:40,354 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 00:11:40,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:40,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:40,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:11:40,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:40,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:40,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 00:11:40,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:40,455 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:11:40,456 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 4 loop predicates [2020-11-30 00:11:40,456 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand 6 states. [2020-11-30 00:11:40,469 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8. Second operand 6 states. Result 39 states and 49 transitions. Complement of second has 5 states. [2020-11-30 00:11:40,470 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 [2020-11-30 00:11:40,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-30 00:11:40,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2020-11-30 00:11:40,470 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 4 letters. Loop has 9 letters. [2020-11-30 00:11:40,470 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:40,470 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 00:11:40,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:40,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:40,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:11:40,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:40,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:40,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 00:11:40,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:40,556 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:11:40,556 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 4 loop predicates [2020-11-30 00:11:40,557 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand 6 states. [2020-11-30 00:11:40,589 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8. Second operand 6 states. Result 41 states and 51 transitions. Complement of second has 6 states. [2020-11-30 00:11:40,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-30 00:11:40,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-30 00:11:40,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-11-30 00:11:40,590 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 4 letters. Loop has 9 letters. [2020-11-30 00:11:40,591 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:40,591 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 00:11:40,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:40,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:11:40,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:40,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 00:11:40,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:40,734 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:11:40,735 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemin loopwithout honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2020-11-30 00:11:40,736 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand 6 states. [2020-11-30 00:11:40,871 INFO L108 BuchiDifferenceFKV]: Finished buchiDifferenceFKV. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand 6 states. Result 210 states and 292 transitions. Complement of second has 48 states 9 powerset states39 rank states. The highest rank that occured is 5 [2020-11-30 00:11:40,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2020-11-30 00:11:40,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-30 00:11:40,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 34 transitions. [2020-11-30 00:11:40,872 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 4 letters. Loop has 9 letters. [2020-11-30 00:11:40,873 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:40,874 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 13 letters. Loop has 9 letters. [2020-11-30 00:11:40,875 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:40,875 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 4 letters. Loop has 18 letters. [2020-11-30 00:11:40,878 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:40,878 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 210 states and 292 transitions. [2020-11-30 00:11:40,882 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2020-11-30 00:11:40,884 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 210 states to 98 states and 131 transitions. [2020-11-30 00:11:40,884 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-11-30 00:11:40,885 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-11-30 00:11:40,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 98 states and 131 transitions. [2020-11-30 00:11:40,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:11:40,885 INFO L691 BuchiCegarLoop]: Abstraction has 98 states and 131 transitions. [2020-11-30 00:11:40,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states and 131 transitions. [2020-11-30 00:11:40,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 58. [2020-11-30 00:11:40,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-30 00:11:40,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 83 transitions. [2020-11-30 00:11:40,892 INFO L714 BuchiCegarLoop]: Abstraction has 58 states and 83 transitions. [2020-11-30 00:11:40,892 INFO L594 BuchiCegarLoop]: Abstraction has 58 states and 83 transitions. [2020-11-30 00:11:40,892 INFO L427 BuchiCegarLoop]: ======== Iteration 10============ [2020-11-30 00:11:40,892 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 83 transitions. [2020-11-30 00:11:40,893 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2020-11-30 00:11:40,893 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:11:40,893 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:11:40,894 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-30 00:11:40,894 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [4, 4, 3, 1] [2020-11-30 00:11:40,895 INFO L794 eck$LassoCheckResult]: Stem: 2689#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 2691#L13-1 assume !!(main_~i~0 > 10); 2705#L10 assume !(25 == main_~i~0); 2701#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 2692#L13-1 [2020-11-30 00:11:40,895 INFO L796 eck$LassoCheckResult]: Loop: 2692#L13-1 assume !!(main_~i~0 > 10); 2693#L10 assume 25 == main_~i~0;main_~i~0 := 30; 2741#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 2739#L13-1 assume !!(main_~i~0 > 10); 2734#L10 assume !(25 == main_~i~0); 2732#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 2727#L13-1 assume !!(main_~i~0 > 10); 2714#L10 assume !(25 == main_~i~0); 2726#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 2725#L13-1 assume !!(main_~i~0 > 10); 2698#L10 assume !(25 == main_~i~0); 2696#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 2692#L13-1 [2020-11-30 00:11:40,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:40,895 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 6 times [2020-11-30 00:11:40,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:40,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885160804] [2020-11-30 00:11:40,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:40,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:40,900 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:40,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:40,903 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:40,904 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:11:40,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:40,905 INFO L82 PathProgramCache]: Analyzing trace with hash -865799297, now seen corresponding path program 4 times [2020-11-30 00:11:40,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:40,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131957811] [2020-11-30 00:11:40,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:40,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:40,911 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:40,916 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:40,917 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:11:40,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:40,918 INFO L82 PathProgramCache]: Analyzing trace with hash -2107106484, now seen corresponding path program 9 times [2020-11-30 00:11:40,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:40,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947596015] [2020-11-30 00:11:40,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:40,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:40,925 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:40,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:40,930 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:40,932 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:11:40,999 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:11:40,999 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:11:40,999 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:11:40,999 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:11:40,999 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:11:40,999 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:40,999 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:11:40,999 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:11:41,000 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration10_Loop [2020-11-30 00:11:41,000 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:11:41,000 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:11:41,000 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:41,007 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:41,011 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:41,099 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:11:41,099 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/z3 Starting monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:11:41,112 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:11:41,113 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/z3 Starting monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:11:41,164 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:11:41,164 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:41,170 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:11:41,203 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:11:41,203 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:11:41,204 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:11:41,204 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:11:41,204 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:11:41,204 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:41,204 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:11:41,204 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:11:41,204 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration10_Loop [2020-11-30 00:11:41,204 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:11:41,204 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:11:41,205 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:41,216 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:41,219 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:11:41,288 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:11:41,289 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/z3 Starting monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:41,294 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 [2020-11-30 00:11:41,296 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:11:41,296 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:11:41,296 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:11:41,296 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:11:41,296 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:11:41,297 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:11:41,297 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:11:41,299 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:11:41,303 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 00:11:41,303 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/z3 Starting monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:11:41,305 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:11:41,306 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:11:41,306 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:11:41,306 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 51 Supporting invariants [] [2020-11-30 00:11:41,332 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:11:41,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:41,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:41,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:11:41,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:41,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:41,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 00:11:41,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:41,477 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:11:41,478 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2020-11-30 00:11:41,478 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand 7 states. [2020-11-30 00:11:41,502 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27. Second operand 7 states. Result 101 states and 129 transitions. Complement of second has 5 states. [2020-11-30 00:11:41,504 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 [2020-11-30 00:11:41,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-30 00:11:41,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-11-30 00:11:41,505 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 12 letters. [2020-11-30 00:11:41,505 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:41,505 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 00:11:41,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:41,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:41,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:11:41,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:41,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:41,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 00:11:41,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:41,695 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:11:41,695 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 5 loop predicates [2020-11-30 00:11:41,695 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand 7 states. [2020-11-30 00:11:41,729 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27. Second operand 7 states. Result 106 states and 135 transitions. Complement of second has 7 states. [2020-11-30 00:11:41,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-30 00:11:41,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-30 00:11:41,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2020-11-30 00:11:41,730 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 4 letters. Loop has 12 letters. [2020-11-30 00:11:41,730 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:41,730 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 00:11:41,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:41,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:11:41,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:41,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:41,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 00:11:41,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:41,865 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:11:41,865 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 5 loop predicates [2020-11-30 00:11:41,866 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand 7 states. [2020-11-30 00:11:41,887 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27. Second operand 7 states. Result 95 states and 126 transitions. Complement of second has 5 states. [2020-11-30 00:11:41,888 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 [2020-11-30 00:11:41,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-30 00:11:41,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2020-11-30 00:11:41,889 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 4 letters. Loop has 12 letters. [2020-11-30 00:11:41,889 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:41,889 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 00:11:41,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:41,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:41,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:11:41,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:41,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:41,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 00:11:41,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:42,042 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:11:42,042 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 5 loop predicates [2020-11-30 00:11:42,043 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand 7 states. [2020-11-30 00:11:42,077 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27. Second operand 7 states. Result 99 states and 128 transitions. Complement of second has 6 states. [2020-11-30 00:11:42,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-30 00:11:42,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-30 00:11:42,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-11-30 00:11:42,079 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 4 letters. Loop has 12 letters. [2020-11-30 00:11:42,079 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:42,079 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 00:11:42,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:42,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:42,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:11:42,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:42,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:42,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 00:11:42,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:42,241 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:11:42,242 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemin loopwithout honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2020-11-30 00:11:42,242 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand 7 states. [2020-11-30 00:11:42,499 INFO L108 BuchiDifferenceFKV]: Finished buchiDifferenceFKV. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand 7 states. Result 1058 states and 1452 transitions. Complement of second has 131 states 20 powerset states111 rank states. The highest rank that occured is 5 [2020-11-30 00:11:42,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2020-11-30 00:11:42,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-30 00:11:42,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 45 transitions. [2020-11-30 00:11:42,501 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 45 transitions. Stem has 4 letters. Loop has 12 letters. [2020-11-30 00:11:42,502 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:42,502 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 45 transitions. Stem has 16 letters. Loop has 12 letters. [2020-11-30 00:11:42,503 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:42,503 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 45 transitions. Stem has 4 letters. Loop has 24 letters. [2020-11-30 00:11:42,505 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:11:42,505 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1058 states and 1452 transitions. [2020-11-30 00:11:42,522 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 26 [2020-11-30 00:11:42,526 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1058 states to 212 states and 312 transitions. [2020-11-30 00:11:42,527 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-11-30 00:11:42,527 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-11-30 00:11:42,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 212 states and 312 transitions. [2020-11-30 00:11:42,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:11:42,528 INFO L691 BuchiCegarLoop]: Abstraction has 212 states and 312 transitions. [2020-11-30 00:11:42,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states and 312 transitions. [2020-11-30 00:11:42,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 126. [2020-11-30 00:11:42,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-11-30 00:11:42,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 200 transitions. [2020-11-30 00:11:42,542 INFO L714 BuchiCegarLoop]: Abstraction has 126 states and 200 transitions. [2020-11-30 00:11:42,545 INFO L594 BuchiCegarLoop]: Abstraction has 126 states and 200 transitions. [2020-11-30 00:11:42,545 INFO L427 BuchiCegarLoop]: ======== Iteration 11============ [2020-11-30 00:11:42,546 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 126 states and 200 transitions. [2020-11-30 00:11:42,547 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2020-11-30 00:11:42,547 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:11:42,547 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:11:42,548 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-30 00:11:42,549 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [5, 5, 4, 1] [2020-11-30 00:11:42,549 INFO L794 eck$LassoCheckResult]: Stem: 4641#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 4645#L13-1 assume !!(main_~i~0 > 10); 4657#L10 assume !(25 == main_~i~0); 4655#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4646#L13-1 [2020-11-30 00:11:42,549 INFO L796 eck$LassoCheckResult]: Loop: 4646#L13-1 assume !!(main_~i~0 > 10); 4647#L10 assume 25 == main_~i~0;main_~i~0 := 30; 4761#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4759#L13-1 assume !!(main_~i~0 > 10); 4757#L10 assume !(25 == main_~i~0); 4755#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4751#L13-1 assume !!(main_~i~0 > 10); 4748#L10 assume !(25 == main_~i~0); 4746#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4741#L13-1 assume !!(main_~i~0 > 10); 4660#L10 assume !(25 == main_~i~0); 4689#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4687#L13-1 assume !!(main_~i~0 > 10); 4652#L10 assume !(25 == main_~i~0); 4650#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4646#L13-1 [2020-11-30 00:11:42,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:42,550 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 7 times [2020-11-30 00:11:42,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:42,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198157873] [2020-11-30 00:11:42,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:42,557 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:42,563 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:42,564 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:11:42,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:42,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1748234353, now seen corresponding path program 5 times [2020-11-30 00:11:42,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:42,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317641835] [2020-11-30 00:11:42,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:42,581 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:42,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:42,591 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:42,593 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:11:42,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:42,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1862223710, now seen corresponding path program 10 times [2020-11-30 00:11:42,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:42,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273443056] [2020-11-30 00:11:42,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:42,623 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:42,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:42,629 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:42,631 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:11:42,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 12:11:42 BoogieIcfgContainer [2020-11-30 00:11:42,792 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 00:11:42,792 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:11:42,792 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:11:42,793 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:11:42,793 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:11:31" (3/4) ... [2020-11-30 00:11:42,797 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-30 00:11:42,862 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1c7b4a85-700e-4be4-8b54-ad516429f8d4/bin/uautomizer/witness.graphml [2020-11-30 00:11:42,862 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:11:42,864 INFO L168 Benchmark]: Toolchain (without parser) took 11965.41 ms. Allocated memory was 90.2 MB in the beginning and 159.4 MB in the end (delta: 69.2 MB). Free memory was 54.6 MB in the beginning and 105.7 MB in the end (delta: -51.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-30 00:11:42,865 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 90.2 MB. Free memory is still 70.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:11:42,865 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.61 ms. Allocated memory is still 90.2 MB. Free memory was 54.4 MB in the beginning and 69.0 MB in the end (delta: -14.6 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2020-11-30 00:11:42,866 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.38 ms. Allocated memory is still 90.2 MB. Free memory was 68.8 MB in the beginning and 67.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:11:42,870 INFO L168 Benchmark]: Boogie Preprocessor took 21.28 ms. Allocated memory is still 90.2 MB. Free memory was 67.6 MB in the beginning and 66.8 MB in the end (delta: 792.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:11:42,870 INFO L168 Benchmark]: RCFGBuilder took 234.32 ms. Allocated memory is still 90.2 MB. Free memory was 66.6 MB in the beginning and 58.9 MB in the end (delta: 7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:11:42,871 INFO L168 Benchmark]: BuchiAutomizer took 11321.88 ms. Allocated memory was 90.2 MB in the beginning and 159.4 MB in the end (delta: 69.2 MB). Free memory was 58.7 MB in the beginning and 106.8 MB in the end (delta: -48.0 MB). Peak memory consumption was 23.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:11:42,872 INFO L168 Benchmark]: Witness Printer took 70.44 ms. Allocated memory is still 159.4 MB. Free memory was 106.8 MB in the beginning and 105.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:11:42,875 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 90.2 MB. Free memory is still 70.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 275.61 ms. Allocated memory is still 90.2 MB. Free memory was 54.4 MB in the beginning and 69.0 MB in the end (delta: -14.6 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.38 ms. Allocated memory is still 90.2 MB. Free memory was 68.8 MB in the beginning and 67.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.28 ms. Allocated memory is still 90.2 MB. Free memory was 67.6 MB in the beginning and 66.8 MB in the end (delta: 792.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 234.32 ms. Allocated memory is still 90.2 MB. Free memory was 66.6 MB in the beginning and 58.9 MB in the end (delta: 7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 11321.88 ms. Allocated memory was 90.2 MB in the beginning and 159.4 MB in the end (delta: 69.2 MB). Free memory was 58.7 MB in the beginning and 106.8 MB in the end (delta: -48.0 MB). Peak memory consumption was 23.6 MB. Max. memory is 16.1 GB. * Witness Printer took 70.44 ms. Allocated memory is still 159.4 MB. Free memory was 106.8 MB in the beginning and 105.7 MB in the end (delta: 1.0 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 12 terminating modules (2 trivial, 5 deterministic, 5 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * i + 27 and consists of 5 locations. One deterministic module has affine ranking function -1 * i + 28 and consists of 3 locations. One deterministic module has affine ranking function -1 * i + 27 and consists of 4 locations. One deterministic module has affine ranking function i and consists of 3 locations. One deterministic module has affine ranking function -2 * i + 55 and consists of 5 locations. One nondeterministic module has affine ranking function -1 * i + 28 and consists of 3 locations. One nondeterministic module has affine ranking function i and consists of 3 locations. One nondeterministic module has affine ranking function -2 * i + 55 and consists of 5 locations. One nondeterministic module has affine ranking function -1 * i + 26 and consists of 6 locations. One nondeterministic module has affine ranking function -2 * i + 51 and consists of 8 locations. 2 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 126 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 11.2s and 11 iterations. TraceHistogramMax:5. Analysis of lassos took 6.5s. Construction of modules took 0.6s. Büchi inclusion checks took 3.7s. Highest rank in rank-based complementation 5. Minimization of det autom 0. Minimization of nondet autom 12. Automata minimization 0.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 200 StatesRemovedByMinimization, 12 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 126 states and ocurred in iteration 10. Nontrivial modules had stage [2, 3, 2, 1, 2]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 12/33 HoareTripleCheckerStatistics: 173 SDtfs, 246 SDslu, 6 SDs, 0 SdLazy, 346 SolverSat, 88 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT8 conc0 concLT1 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax210 hnf92 lsp43 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq191 hnf89 smp100 dnf113 smp97 tf112 neg98 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 41ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 10 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 9]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@56f6459b=0, \result=0, i=25} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 9]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 Loop: [L9] COND TRUE i > 10 [L10] COND TRUE i == 25 [L11] i = 30 [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...