./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/c.01-no-inv.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_12fefb8e-6c38-49f6-9893-14b993ea9d34/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_12fefb8e-6c38-49f6-9893-14b993ea9d34/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_12fefb8e-6c38-49f6-9893-14b993ea9d34/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_12fefb8e-6c38-49f6-9893-14b993ea9d34/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/c.01-no-inv.c -s /tmp/vcloud-vcloud-master/worker/run_dir_12fefb8e-6c38-49f6-9893-14b993ea9d34/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_12fefb8e-6c38-49f6-9893-14b993ea9d34/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 90c8922c67b3eb8c55716b63a408098d1b23a21e ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 23:55:32,222 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:55:32,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:55:32,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:55:32,304 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:55:32,309 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:55:32,311 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:55:32,318 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:55:32,321 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:55:32,329 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:55:32,333 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:55:32,335 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:55:32,336 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:55:32,340 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:55:32,341 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:55:32,343 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:55:32,344 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:55:32,347 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:55:32,351 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:55:32,358 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:55:32,360 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:55:32,365 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:55:32,367 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:55:32,369 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:55:32,377 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:55:32,378 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:55:32,378 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:55:32,380 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:55:32,381 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:55:32,382 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:55:32,382 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:55:32,384 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:55:32,385 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:55:32,387 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:55:32,388 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:55:32,388 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:55:32,389 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:55:32,389 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:55:32,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:55:32,391 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:55:32,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:55:32,394 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_12fefb8e-6c38-49f6-9893-14b993ea9d34/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-29 23:55:32,437 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:55:32,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:55:32,439 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:55:32,439 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:55:32,439 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:55:32,440 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 23:55:32,440 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 23:55:32,440 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 23:55:32,440 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 23:55:32,441 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 23:55:32,442 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 23:55:32,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:55:32,443 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 23:55:32,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:55:32,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:55:32,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 23:55:32,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 23:55:32,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 23:55:32,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:55:32,444 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 23:55:32,444 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:55:32,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 23:55:32,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:55:32,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:55:32,445 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 23:55:32,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:55:32,446 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:55:32,446 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:55:32,446 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 23:55:32,449 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 23:55:32,449 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_12fefb8e-6c38-49f6-9893-14b993ea9d34/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_12fefb8e-6c38-49f6-9893-14b993ea9d34/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90c8922c67b3eb8c55716b63a408098d1b23a21e [2020-11-29 23:55:32,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:55:32,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:55:32,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:55:32,827 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:55:32,827 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:55:32,828 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_12fefb8e-6c38-49f6-9893-14b993ea9d34/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/c.01-no-inv.c [2020-11-29 23:55:32,895 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_12fefb8e-6c38-49f6-9893-14b993ea9d34/bin/uautomizer/data/a5f20a304/860d7b92939c4a8184c0728ec18ad77b/FLAGd072f3fe0 [2020-11-29 23:55:33,394 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:55:33,395 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_12fefb8e-6c38-49f6-9893-14b993ea9d34/sv-benchmarks/c/termination-restricted-15/c.01-no-inv.c [2020-11-29 23:55:33,404 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_12fefb8e-6c38-49f6-9893-14b993ea9d34/bin/uautomizer/data/a5f20a304/860d7b92939c4a8184c0728ec18ad77b/FLAGd072f3fe0 [2020-11-29 23:55:33,760 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_12fefb8e-6c38-49f6-9893-14b993ea9d34/bin/uautomizer/data/a5f20a304/860d7b92939c4a8184c0728ec18ad77b [2020-11-29 23:55:33,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:55:33,764 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:55:33,766 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:55:33,766 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:55:33,770 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:55:33,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:55:33" (1/1) ... [2020-11-29 23:55:33,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f8ff73d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:33, skipping insertion in model container [2020-11-29 23:55:33,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:55:33" (1/1) ... [2020-11-29 23:55:33,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:55:33,792 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:55:33,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:55:33,926 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:55:33,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:55:33,980 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:55:33,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:33 WrapperNode [2020-11-29 23:55:33,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:55:33,983 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:55:33,984 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:55:33,984 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:55:33,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:33" (1/1) ... [2020-11-29 23:55:33,999 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:33" (1/1) ... [2020-11-29 23:55:34,021 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:55:34,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:55:34,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:55:34,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:55:34,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:33" (1/1) ... [2020-11-29 23:55:34,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:33" (1/1) ... [2020-11-29 23:55:34,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:33" (1/1) ... [2020-11-29 23:55:34,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:33" (1/1) ... [2020-11-29 23:55:34,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:33" (1/1) ... [2020-11-29 23:55:34,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:33" (1/1) ... [2020-11-29 23:55:34,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:33" (1/1) ... [2020-11-29 23:55:34,057 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:55:34,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:55:34,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:55:34,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:55:34,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12fefb8e-6c38-49f6-9893-14b993ea9d34/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:34,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:55:34,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:55:34,288 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:55:34,288 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-29 23:55:34,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:55:34 BoogieIcfgContainer [2020-11-29 23:55:34,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:55:34,292 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 23:55:34,292 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 23:55:34,296 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 23:55:34,297 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:55:34,297 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 11:55:33" (1/3) ... [2020-11-29 23:55:34,298 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@400f716d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 11:55:34, skipping insertion in model container [2020-11-29 23:55:34,299 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:55:34,299 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:33" (2/3) ... [2020-11-29 23:55:34,299 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@400f716d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 11:55:34, skipping insertion in model container [2020-11-29 23:55:34,299 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:55:34,300 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:55:34" (3/3) ... [2020-11-29 23:55:34,301 INFO L373 chiAutomizerObserver]: Analyzing ICFG c.01-no-inv.c [2020-11-29 23:55:34,363 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 23:55:34,363 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 23:55:34,363 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 23:55:34,364 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:55:34,364 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:55:34,365 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 23:55:34,365 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:55:34,365 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 23:55:34,376 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-29 23:55:34,394 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 23:55:34,394 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:55:34,394 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:55:34,400 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 23:55:34,400 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 23:55:34,400 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 23:55:34,401 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-29 23:55:34,402 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 23:55:34,402 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:55:34,402 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:55:34,403 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 23:55:34,403 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 23:55:34,410 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 8#L10-2true [2020-11-29 23:55:34,411 INFO L796 eck$LassoCheckResult]: Loop: 8#L10-2true assume !!(main_~x~0 >= 0);main_~y~0 := 1; 3#L12-2true assume !(main_~x~0 > main_~y~0 && main_~y~0 < 1073741824); 10#L12-3true main_~x~0 := main_~x~0 - 1; 8#L10-2true [2020-11-29 23:55:34,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:34,418 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-29 23:55:34,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:34,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001943212] [2020-11-29 23:55:34,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:34,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:34,513 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:34,521 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:34,534 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:55:34,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:34,536 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2020-11-29 23:55:34,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:34,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231592065] [2020-11-29 23:55:34,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:34,549 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:34,554 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:34,556 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:55:34,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:34,558 INFO L82 PathProgramCache]: Analyzing trace with hash 963472, now seen corresponding path program 1 times [2020-11-29 23:55:34,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:34,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873083912] [2020-11-29 23:55:34,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:34,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:34,567 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:34,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:34,574 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:34,576 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:55:34,759 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 13 [2020-11-29 23:55:34,789 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:55:34,790 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:55:34,790 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:55:34,790 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:55:34,790 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 23:55:34,790 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:34,790 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:55:34,791 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:55:34,791 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01-no-inv.c_Iteration1_Loop [2020-11-29 23:55:34,791 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:55:34,791 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:55:34,810 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:34,825 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:34,832 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:34,932 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:55:34,933 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12fefb8e-6c38-49f6-9893-14b993ea9d34/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) [2020-11-29 23:55:34,973 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:55:34,973 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:34,982 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 23:55:34,982 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_12fefb8e-6c38-49f6-9893-14b993ea9d34/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:55:35,013 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:55:35,013 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:35,017 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 23:55:35,017 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_12fefb8e-6c38-49f6-9893-14b993ea9d34/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 [2020-11-29 23:55:35,042 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:55:35,042 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12fefb8e-6c38-49f6-9893-14b993ea9d34/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:35,079 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 23:55:35,080 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 23:55:35,120 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 23:55:35,121 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:55:35,121 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:55:35,121 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:55:35,121 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:55:35,121 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 23:55:35,121 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:35,122 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:55:35,122 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:55:35,122 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01-no-inv.c_Iteration1_Loop [2020-11-29 23:55:35,122 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:55:35,122 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:55:35,125 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:35,163 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:35,169 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:35,395 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:55:35,399 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12fefb8e-6c38-49f6-9893-14b993ea9d34/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:35,405 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:55:35,416 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:55:35,416 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:55:35,416 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:55:35,417 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:55:35,417 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:55:35,420 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:55:35,420 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 23:55:35,424 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 23:55:35,427 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 23:55:35,427 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12fefb8e-6c38-49f6-9893-14b993ea9d34/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:35,433 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 23:55:35,434 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 23:55:35,434 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 23:55:35,435 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2020-11-29 23:55:35,456 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 23:55:35,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:35,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:35,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 23:55:35,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:55:35,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:35,509 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 23:55:35,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:55:35,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:35,536 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-29 23:55:35,537 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2020-11-29 23:55:35,583 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 23 states and 35 transitions. Complement of second has 7 states. [2020-11-29 23:55:35,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 23:55:35,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 23:55:35,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2020-11-29 23:55:35,587 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 3 letters. [2020-11-29 23:55:35,588 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:55:35,588 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 4 letters. Loop has 3 letters. [2020-11-29 23:55:35,589 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:55:35,589 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 6 letters. [2020-11-29 23:55:35,589 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:55:35,590 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 35 transitions. [2020-11-29 23:55:35,592 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 23:55:35,595 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2020-11-29 23:55:35,597 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-11-29 23:55:35,597 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-11-29 23:55:35,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2020-11-29 23:55:35,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 23:55:35,598 INFO L691 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-11-29 23:55:35,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2020-11-29 23:55:35,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2020-11-29 23:55:35,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-29 23:55:35,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2020-11-29 23:55:35,620 INFO L714 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2020-11-29 23:55:35,620 INFO L594 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2020-11-29 23:55:35,620 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 23:55:35,620 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 9 transitions. [2020-11-29 23:55:35,620 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 23:55:35,620 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:55:35,621 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:55:35,621 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-29 23:55:35,621 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-29 23:55:35,621 INFO L794 eck$LassoCheckResult]: Stem: 73#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 74#L10-2 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 70#L12-2 [2020-11-29 23:55:35,621 INFO L796 eck$LassoCheckResult]: Loop: 70#L12-2 assume !!(main_~x~0 > main_~y~0 && main_~y~0 < 1073741824);main_~y~0 := 2 * main_~y~0; 70#L12-2 [2020-11-29 23:55:35,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:35,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-11-29 23:55:35,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:35,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113622973] [2020-11-29 23:55:35,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:35,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:35,627 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:35,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:35,631 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:35,632 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:55:35,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:35,632 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2020-11-29 23:55:35,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:35,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614246391] [2020-11-29 23:55:35,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:35,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:35,637 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:35,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:35,640 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:35,641 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:55:35,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:35,642 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2020-11-29 23:55:35,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:35,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873447271] [2020-11-29 23:55:35,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:35,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:35,648 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:35,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:35,652 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:35,654 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:55:35,754 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:55:35,754 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:55:35,754 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:55:35,754 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:55:35,754 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 23:55:35,754 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:35,754 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:55:35,755 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:55:35,755 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01-no-inv.c_Iteration2_Lasso [2020-11-29 23:55:35,755 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:55:35,755 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:55:35,757 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:35,766 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:35,770 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:35,788 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:35,792 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:35,795 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:35,799 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:35,951 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:55:35,951 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12fefb8e-6c38-49f6-9893-14b993ea9d34/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:35,956 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:55:35,964 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 23:55:35,969 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 23:55:35,969 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_12fefb8e-6c38-49f6-9893-14b993ea9d34/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) [2020-11-29 23:55:36,009 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:55:36,010 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 [2020-11-29 23:55:36,014 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 23:55:36,015 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12fefb8e-6c38-49f6-9893-14b993ea9d34/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:36,052 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:55:36,052 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12fefb8e-6c38-49f6-9893-14b993ea9d34/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:36,087 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 23:55:36,087 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 23:55:36,123 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 23:55:36,125 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:55:36,125 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:55:36,125 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:55:36,126 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:55:36,126 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 23:55:36,126 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:36,126 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:55:36,126 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:55:36,126 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01-no-inv.c_Iteration2_Lasso [2020-11-29 23:55:36,126 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:55:36,126 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:55:36,129 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:36,141 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:36,163 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:36,167 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:36,171 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:36,199 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:36,204 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:36,306 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:55:36,307 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12fefb8e-6c38-49f6-9893-14b993ea9d34/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) [2020-11-29 23:55:36,311 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:55:36,313 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:55:36,313 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:55:36,313 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:55:36,313 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:55:36,323 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:55:36,323 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:36,329 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12fefb8e-6c38-49f6-9893-14b993ea9d34/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:55:36,370 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:55:36,372 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:55:36,372 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:55:36,372 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:55:36,372 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:55:36,373 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:55:36,373 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:55:36,373 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:36,375 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12fefb8e-6c38-49f6-9893-14b993ea9d34/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:36,411 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:55:36,413 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:55:36,413 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:55:36,413 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:55:36,413 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:55:36,413 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:55:36,414 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:55:36,414 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 23:55:36,416 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12fefb8e-6c38-49f6-9893-14b993ea9d34/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:36,448 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:55:36,450 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:55:36,450 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:55:36,450 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:55:36,450 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:55:36,450 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:55:36,451 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:55:36,451 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 23:55:36,453 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12fefb8e-6c38-49f6-9893-14b993ea9d34/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:55:36,497 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:55:36,498 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:55:36,499 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:55:36,499 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:55:36,499 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:55:36,507 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:55:36,507 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:36,518 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 23:55:36,552 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2020-11-29 23:55:36,552 INFO L444 ModelExtractionUtils]: 2 out of 10 variables were initially zero. Simplification set additionally 3 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12fefb8e-6c38-49f6-9893-14b993ea9d34/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:36,589 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 23:55:36,593 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2020-11-29 23:55:36,593 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 23:55:36,593 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = -2*ULTIMATE.start_main_~y~0 + 2147483647 Supporting invariants [1*ULTIMATE.start_main_~y~0 - 1 >= 0] [2020-11-29 23:55:36,617 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2020-11-29 23:55:36,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:36,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:36,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 23:55:36,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:55:36,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:36,695 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 23:55:36,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:55:36,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:36,696 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-29 23:55:36,696 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5 Second operand 2 states. [2020-11-29 23:55:36,729 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 13 states and 18 transitions. Complement of second has 5 states. [2020-11-29 23:55:36,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 23:55:36,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-29 23:55:36,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2020-11-29 23:55:36,731 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 1 letters. [2020-11-29 23:55:36,731 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:55:36,731 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2020-11-29 23:55:36,731 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:55:36,731 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2020-11-29 23:55:36,731 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:55:36,731 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 18 transitions. [2020-11-29 23:55:36,732 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 23:55:36,733 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 9 states and 13 transitions. [2020-11-29 23:55:36,733 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-11-29 23:55:36,733 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2020-11-29 23:55:36,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2020-11-29 23:55:36,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 23:55:36,733 INFO L691 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2020-11-29 23:55:36,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2020-11-29 23:55:36,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 6. [2020-11-29 23:55:36,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-29 23:55:36,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2020-11-29 23:55:36,735 INFO L714 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-11-29 23:55:36,735 INFO L594 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-11-29 23:55:36,735 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 23:55:36,735 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2020-11-29 23:55:36,735 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 23:55:36,735 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:55:36,735 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:55:36,736 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2020-11-29 23:55:36,736 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-29 23:55:36,736 INFO L794 eck$LassoCheckResult]: Stem: 130#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 131#L10-2 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 128#L12-2 assume !(main_~x~0 > main_~y~0 && main_~y~0 < 1073741824); 129#L12-3 main_~x~0 := main_~x~0 - 1; 132#L10-2 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 127#L12-2 [2020-11-29 23:55:36,736 INFO L796 eck$LassoCheckResult]: Loop: 127#L12-2 assume !!(main_~x~0 > main_~y~0 && main_~y~0 < 1073741824);main_~y~0 := 2 * main_~y~0; 127#L12-2 [2020-11-29 23:55:36,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:36,736 INFO L82 PathProgramCache]: Analyzing trace with hash 29867642, now seen corresponding path program 2 times [2020-11-29 23:55:36,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:36,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531658854] [2020-11-29 23:55:36,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:36,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:36,743 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:36,758 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:36,759 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:55:36,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:36,763 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2020-11-29 23:55:36,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:36,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883511966] [2020-11-29 23:55:36,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:36,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:36,774 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:36,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:36,784 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:36,785 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:55:36,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:36,785 INFO L82 PathProgramCache]: Analyzing trace with hash 925896921, now seen corresponding path program 1 times [2020-11-29 23:55:36,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:36,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198673835] [2020-11-29 23:55:36,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:36,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:36,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:36,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198673835] [2020-11-29 23:55:36,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728702523] [2020-11-29 23:55:36,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12fefb8e-6c38-49f6-9893-14b993ea9d34/bin/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-11-29 23:55:36,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:36,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 23:55:36,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:55:36,949 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:55:36,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:36,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 23:55:36,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-11-29 23:55:36,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133039496] [2020-11-29 23:55:37,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:37,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 23:55:37,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:55:37,004 INFO L87 Difference]: Start difference. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 7 states. [2020-11-29 23:55:37,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:37,088 INFO L93 Difference]: Finished difference Result 14 states and 18 transitions. [2020-11-29 23:55:37,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:55:37,089 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 18 transitions. [2020-11-29 23:55:37,089 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 23:55:37,090 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 8 states and 10 transitions. [2020-11-29 23:55:37,090 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-11-29 23:55:37,090 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-11-29 23:55:37,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 10 transitions. [2020-11-29 23:55:37,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 23:55:37,090 INFO L691 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2020-11-29 23:55:37,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 10 transitions. [2020-11-29 23:55:37,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2020-11-29 23:55:37,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-29 23:55:37,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2020-11-29 23:55:37,092 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2020-11-29 23:55:37,092 INFO L594 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2020-11-29 23:55:37,092 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 23:55:37,092 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2020-11-29 23:55:37,092 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 23:55:37,092 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:55:37,092 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:55:37,093 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2020-11-29 23:55:37,093 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-29 23:55:37,093 INFO L794 eck$LassoCheckResult]: Stem: 183#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 184#L10-2 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 181#L12-2 assume !!(main_~x~0 > main_~y~0 && main_~y~0 < 1073741824);main_~y~0 := 2 * main_~y~0; 182#L12-2 assume !(main_~x~0 > main_~y~0 && main_~y~0 < 1073741824); 186#L12-3 main_~x~0 := main_~x~0 - 1; 185#L10-2 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 180#L12-2 [2020-11-29 23:55:37,093 INFO L796 eck$LassoCheckResult]: Loop: 180#L12-2 assume !!(main_~x~0 > main_~y~0 && main_~y~0 < 1073741824);main_~y~0 := 2 * main_~y~0; 180#L12-2 [2020-11-29 23:55:37,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:37,094 INFO L82 PathProgramCache]: Analyzing trace with hash 925951131, now seen corresponding path program 2 times [2020-11-29 23:55:37,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:37,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208288947] [2020-11-29 23:55:37,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:37,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:37,101 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:37,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:37,106 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:37,107 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:55:37,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:37,108 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 3 times [2020-11-29 23:55:37,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:37,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166860683] [2020-11-29 23:55:37,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:37,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:37,112 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:37,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:37,114 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:37,115 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:55:37,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:37,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1360285992, now seen corresponding path program 3 times [2020-11-29 23:55:37,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:37,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558369716] [2020-11-29 23:55:37,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:37,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:37,174 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:37,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558369716] [2020-11-29 23:55:37,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206418715] [2020-11-29 23:55:37,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12fefb8e-6c38-49f6-9893-14b993ea9d34/bin/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-11-29 23:55:37,213 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-29 23:55:37,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:55:37,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 23:55:37,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:55:37,234 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:55:37,258 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:37,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 23:55:37,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-11-29 23:55:37,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407326641] [2020-11-29 23:55:37,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:37,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 23:55:37,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-11-29 23:55:37,279 INFO L87 Difference]: Start difference. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 8 states. [2020-11-29 23:55:37,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:37,367 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2020-11-29 23:55:37,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 23:55:37,369 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 16 transitions. [2020-11-29 23:55:37,369 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 23:55:37,370 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 12 transitions. [2020-11-29 23:55:37,370 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-11-29 23:55:37,370 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-11-29 23:55:37,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 12 transitions. [2020-11-29 23:55:37,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 23:55:37,370 INFO L691 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2020-11-29 23:55:37,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 12 transitions. [2020-11-29 23:55:37,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 8. [2020-11-29 23:55:37,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-29 23:55:37,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2020-11-29 23:55:37,372 INFO L714 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2020-11-29 23:55:37,372 INFO L594 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2020-11-29 23:55:37,372 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-29 23:55:37,372 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 10 transitions. [2020-11-29 23:55:37,372 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 23:55:37,373 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:55:37,373 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:55:37,373 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1] [2020-11-29 23:55:37,373 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-29 23:55:37,373 INFO L794 eck$LassoCheckResult]: Stem: 241#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 242#L10-2 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 239#L12-2 assume !!(main_~x~0 > main_~y~0 && main_~y~0 < 1073741824);main_~y~0 := 2 * main_~y~0; 240#L12-2 assume !!(main_~x~0 > main_~y~0 && main_~y~0 < 1073741824);main_~y~0 := 2 * main_~y~0; 245#L12-2 assume !(main_~x~0 > main_~y~0 && main_~y~0 < 1073741824); 244#L12-3 main_~x~0 := main_~x~0 - 1; 243#L10-2 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 238#L12-2 [2020-11-29 23:55:37,373 INFO L796 eck$LassoCheckResult]: Loop: 238#L12-2 assume !!(main_~x~0 > main_~y~0 && main_~y~0 < 1073741824);main_~y~0 := 2 * main_~y~0; 238#L12-2 [2020-11-29 23:55:37,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:37,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1360231782, now seen corresponding path program 4 times [2020-11-29 23:55:37,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:37,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367496473] [2020-11-29 23:55:37,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:37,391 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:37,397 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:37,398 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:55:37,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:37,399 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 4 times [2020-11-29 23:55:37,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:37,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060485791] [2020-11-29 23:55:37,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:37,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:37,411 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:37,412 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:37,413 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:55:37,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:37,414 INFO L82 PathProgramCache]: Analyzing trace with hash 782487737, now seen corresponding path program 5 times [2020-11-29 23:55:37,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:37,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086297401] [2020-11-29 23:55:37,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:37,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:37,432 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:37,440 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:37,441 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:55:37,563 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:55:37,563 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:55:37,563 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:55:37,563 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:55:37,563 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 23:55:37,563 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:37,563 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:55:37,563 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:55:37,563 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01-no-inv.c_Iteration5_Lasso [2020-11-29 23:55:37,563 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:55:37,578 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:55:37,579 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:37,588 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:37,592 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:37,596 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:37,602 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:37,621 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:37,626 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:37,736 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:55:37,736 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12fefb8e-6c38-49f6-9893-14b993ea9d34/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) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:37,752 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:55:37,752 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 23:55:37,755 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 23:55:37,755 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12fefb8e-6c38-49f6-9893-14b993ea9d34/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) [2020-11-29 23:55:37,796 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:55:37,797 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:37,800 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 23:55:37,800 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12fefb8e-6c38-49f6-9893-14b993ea9d34/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) [2020-11-29 23:55:37,844 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:55:37,844 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 [2020-11-29 23:55:37,848 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 23:55:37,848 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12fefb8e-6c38-49f6-9893-14b993ea9d34/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 [2020-11-29 23:55:37,874 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:55:37,874 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 23:55:37,877 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 23:55:37,877 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12fefb8e-6c38-49f6-9893-14b993ea9d34/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:37,900 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:55:37,900 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12fefb8e-6c38-49f6-9893-14b993ea9d34/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) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:37,939 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 23:55:37,939 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 23:55:37,965 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 23:55:37,967 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:55:37,967 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:55:37,967 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:55:37,967 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:55:37,967 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 23:55:37,967 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:37,967 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:55:37,967 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:55:37,967 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01-no-inv.c_Iteration5_Lasso [2020-11-29 23:55:37,967 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:55:37,967 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:55:37,969 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:37,990 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:37,994 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:38,015 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:38,018 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:38,021 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:38,025 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:38,118 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:55:38,118 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12fefb8e-6c38-49f6-9893-14b993ea9d34/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 [2020-11-29 23:55:38,124 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:55:38,125 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:55:38,125 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:55:38,126 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:55:38,126 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:55:38,126 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:55:38,128 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:55:38,128 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 23:55:38,130 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12fefb8e-6c38-49f6-9893-14b993ea9d34/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) [2020-11-29 23:55:38,154 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:38,155 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:55:38,155 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:55:38,155 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:55:38,155 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:55:38,155 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:55:38,156 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:55:38,156 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 23:55:38,157 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12fefb8e-6c38-49f6-9893-14b993ea9d34/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 [2020-11-29 23:55:38,187 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:55:38,188 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:55:38,188 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:55:38,188 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:55:38,188 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:55:38,188 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:55:38,189 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:55:38,189 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 23:55:38,190 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12fefb8e-6c38-49f6-9893-14b993ea9d34/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 [2020-11-29 23:55:38,211 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:55:38,213 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:55:38,213 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:55:38,213 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:55:38,213 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:55:38,215 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:55:38,215 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 23:55:38,226 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12fefb8e-6c38-49f6-9893-14b993ea9d34/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) [2020-11-29 23:55:38,263 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:55:38,265 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:55:38,265 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:55:38,265 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:55:38,265 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:55:38,268 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:55:38,268 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:38,272 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12fefb8e-6c38-49f6-9893-14b993ea9d34/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) [2020-11-29 23:55:38,309 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:55:38,310 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:55:38,311 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:55:38,311 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:55:38,311 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:38,313 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:55:38,314 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 23:55:38,318 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12fefb8e-6c38-49f6-9893-14b993ea9d34/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) [2020-11-29 23:55:38,363 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 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:38,364 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:55:38,365 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:55:38,365 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:55:38,365 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:55:38,370 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:55:38,370 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 23:55:38,382 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 23:55:38,407 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2020-11-29 23:55:38,407 INFO L444 ModelExtractionUtils]: 1 out of 10 variables were initially zero. Simplification set additionally 4 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12fefb8e-6c38-49f6-9893-14b993ea9d34/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) [2020-11-29 23:55:38,412 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:38,418 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2020-11-29 23:55:38,419 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 23:55:38,419 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~y~0) = 2147483647*ULTIMATE.start_main_~x~0 - 2147483648*ULTIMATE.start_main_~y~0 Supporting invariants [1*ULTIMATE.start_main_~y~0 - 1 >= 0] [2020-11-29 23:55:38,454 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2020-11-29 23:55:38,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:38,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:38,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 23:55:38,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:55:38,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:38,508 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 23:55:38,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:55:38,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:38,509 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-29 23:55:38,509 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4 Second operand 2 states. [2020-11-29 23:55:38,546 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 15 states and 19 transitions. Complement of second has 5 states. [2020-11-29 23:55:38,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 23:55:38,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-29 23:55:38,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2020-11-29 23:55:38,547 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 7 letters. Loop has 1 letters. [2020-11-29 23:55:38,547 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:55:38,547 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 23:55:38,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:38,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:38,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 23:55:38,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:55:38,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:38,588 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 23:55:38,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:55:38,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:38,589 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-29 23:55:38,589 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4 Second operand 2 states. [2020-11-29 23:55:38,620 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 15 states and 19 transitions. Complement of second has 5 states. [2020-11-29 23:55:38,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 23:55:38,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-29 23:55:38,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2020-11-29 23:55:38,621 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 7 letters. Loop has 1 letters. [2020-11-29 23:55:38,621 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:55:38,621 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 23:55:38,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:38,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:38,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 23:55:38,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:55:38,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:38,711 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 23:55:38,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:55:38,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:38,712 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-29 23:55:38,712 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4 Second operand 2 states. [2020-11-29 23:55:38,752 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 11 states and 13 transitions. Complement of second has 4 states. [2020-11-29 23:55:38,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 23:55:38,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-29 23:55:38,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-11-29 23:55:38,753 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 1 letters. [2020-11-29 23:55:38,753 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:55:38,753 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 1 letters. [2020-11-29 23:55:38,754 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:55:38,754 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2020-11-29 23:55:38,754 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:55:38,754 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2020-11-29 23:55:38,755 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 23:55:38,755 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2020-11-29 23:55:38,755 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 23:55:38,755 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 23:55:38,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 23:55:38,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:55:38,755 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:55:38,755 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:55:38,755 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:55:38,755 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-29 23:55:38,755 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 23:55:38,755 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 23:55:38,755 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 23:55:38,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 11:55:38 BoogieIcfgContainer [2020-11-29 23:55:38,759 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 23:55:38,760 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:55:38,760 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:55:38,760 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:55:38,760 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:55:34" (3/4) ... [2020-11-29 23:55:38,763 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 23:55:38,763 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:55:38,764 INFO L168 Benchmark]: Toolchain (without parser) took 4999.13 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 86.1 MB in the beginning and 102.6 MB in the end (delta: -16.5 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2020-11-29 23:55:38,765 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 79.7 MB. Free memory is still 38.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:55:38,765 INFO L168 Benchmark]: CACSL2BoogieTranslator took 216.11 ms. Allocated memory is still 115.3 MB. Free memory was 85.8 MB in the beginning and 92.7 MB in the end (delta: -6.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 23:55:38,766 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.40 ms. Allocated memory is still 115.3 MB. Free memory was 92.7 MB in the beginning and 91.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:55:38,766 INFO L168 Benchmark]: Boogie Preprocessor took 35.24 ms. Allocated memory is still 115.3 MB. Free memory was 91.5 MB in the beginning and 90.6 MB in the end (delta: 972.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:55:38,766 INFO L168 Benchmark]: RCFGBuilder took 231.87 ms. Allocated memory is still 115.3 MB. Free memory was 90.6 MB in the beginning and 82.3 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:55:38,767 INFO L168 Benchmark]: BuchiAutomizer took 4467.63 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 82.3 MB in the beginning and 102.6 MB in the end (delta: -20.3 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. [2020-11-29 23:55:38,767 INFO L168 Benchmark]: Witness Printer took 3.27 ms. Allocated memory is still 138.4 MB. Free memory is still 102.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:55:38,770 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 79.7 MB. Free memory is still 38.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 216.11 ms. Allocated memory is still 115.3 MB. Free memory was 85.8 MB in the beginning and 92.7 MB in the end (delta: -6.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.40 ms. Allocated memory is still 115.3 MB. Free memory was 92.7 MB in the beginning and 91.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.24 ms. Allocated memory is still 115.3 MB. Free memory was 91.5 MB in the beginning and 90.6 MB in the end (delta: 972.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 231.87 ms. Allocated memory is still 115.3 MB. Free memory was 90.6 MB in the beginning and 82.3 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 4467.63 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 82.3 MB in the beginning and 102.6 MB in the end (delta: -20.3 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. * Witness Printer took 3.27 ms. Allocated memory is still 138.4 MB. Free memory is still 102.6 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 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * x + 1 and consists of 5 locations. One deterministic module has affine ranking function -2 * y + 2147483647 and consists of 3 locations. One nondeterministic module has affine ranking function 2147483647 * x + -2147483648 * y and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.4s and 6 iterations. TraceHistogramMax:2. Analysis of lassos took 3.5s. Construction of modules took 0.1s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 7 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 8 states and ocurred in iteration 4. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 21 SDtfs, 27 SDslu, 9 SDs, 0 SdLazy, 80 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc2 concLT0 SILN0 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax157 hnf97 lsp57 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq153 hnf93 smp100 dnf100 smp100 tf102 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 21ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 8 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...