./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/McCarthyIterative.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_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/McCarthyIterative.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/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 a5e4c58569d8caa47946d30f6cb501096837aef1 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:04:17,226 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:04:17,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:04:17,306 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:04:17,307 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:04:17,308 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:04:17,311 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:04:17,313 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:04:17,315 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:04:17,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:04:17,318 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:04:17,320 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:04:17,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:04:17,322 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:04:17,323 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:04:17,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:04:17,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:04:17,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:04:17,329 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:04:17,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:04:17,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:04:17,335 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:04:17,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:04:17,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:04:17,341 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:04:17,342 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:04:17,342 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:04:17,344 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:04:17,344 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:04:17,346 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:04:17,346 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:04:17,347 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:04:17,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:04:17,349 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:04:17,350 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:04:17,351 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:04:17,352 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:04:17,352 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:04:17,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:04:17,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:04:17,354 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:04:17,355 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-28 03:04:17,380 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:04:17,380 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:04:17,382 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:04:17,382 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:04:17,382 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:04:17,383 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 03:04:17,383 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 03:04:17,383 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 03:04:17,383 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 03:04:17,384 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 03:04:17,384 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 03:04:17,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:04:17,384 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:04:17,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:04:17,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:04:17,385 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 03:04:17,385 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 03:04:17,387 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 03:04:17,387 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:04:17,387 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 03:04:17,387 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:04:17,388 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 03:04:17,388 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:04:17,388 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:04:17,389 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 03:04:17,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:04:17,389 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:04:17,390 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:04:17,390 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 03:04:17,392 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 03:04:17,393 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_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5e4c58569d8caa47946d30f6cb501096837aef1 [2020-11-28 03:04:17,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:04:17,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:04:17,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:04:17,707 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:04:17,708 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:04:17,709 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/McCarthyIterative.c [2020-11-28 03:04:17,793 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/data/80e62c516/85a0aff930224adf8ec3418e9ed1e0ee/FLAG8692ee18b [2020-11-28 03:04:18,235 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:04:18,236 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/sv-benchmarks/c/termination-restricted-15/McCarthyIterative.c [2020-11-28 03:04:18,242 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/data/80e62c516/85a0aff930224adf8ec3418e9ed1e0ee/FLAG8692ee18b [2020-11-28 03:04:18,630 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/data/80e62c516/85a0aff930224adf8ec3418e9ed1e0ee [2020-11-28 03:04:18,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:04:18,635 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:04:18,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:04:18,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:04:18,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:04:18,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:04:18" (1/1) ... [2020-11-28 03:04:18,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ab524ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:18, skipping insertion in model container [2020-11-28 03:04:18,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:04:18" (1/1) ... [2020-11-28 03:04:18,661 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:04:18,675 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:04:18,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:04:18,808 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:04:18,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:04:18,861 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:04:18,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:18 WrapperNode [2020-11-28 03:04:18,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:04:18,863 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:04:18,863 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:04:18,863 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:04:18,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:18" (1/1) ... [2020-11-28 03:04:18,877 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:18" (1/1) ... [2020-11-28 03:04:18,893 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:04:18,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:04:18,895 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:04:18,895 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:04:18,903 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:18" (1/1) ... [2020-11-28 03:04:18,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:18" (1/1) ... [2020-11-28 03:04:18,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:18" (1/1) ... [2020-11-28 03:04:18,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:18" (1/1) ... [2020-11-28 03:04:18,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:18" (1/1) ... [2020-11-28 03:04:18,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:18" (1/1) ... [2020-11-28 03:04:18,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:18" (1/1) ... [2020-11-28 03:04:18,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:04:18,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:04:18,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:04:18,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:04:18,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/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 [2020-11-28 03:04:19,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:04:19,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:04:19,129 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:04:19,130 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-28 03:04:19,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:04:19 BoogieIcfgContainer [2020-11-28 03:04:19,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:04:19,133 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 03:04:19,133 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 03:04:19,137 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 03:04:19,138 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:04:19,138 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 03:04:18" (1/3) ... [2020-11-28 03:04:19,139 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@61b4aa75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:04:19, skipping insertion in model container [2020-11-28 03:04:19,139 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:04:19,140 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:18" (2/3) ... [2020-11-28 03:04:19,140 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@61b4aa75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:04:19, skipping insertion in model container [2020-11-28 03:04:19,140 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:04:19,140 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:04:19" (3/3) ... [2020-11-28 03:04:19,141 INFO L373 chiAutomizerObserver]: Analyzing ICFG McCarthyIterative.c [2020-11-28 03:04:19,191 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 03:04:19,191 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 03:04:19,191 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 03:04:19,192 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:04:19,192 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:04:19,192 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 03:04:19,192 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:04:19,192 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 03:04:19,205 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-11-28 03:04:19,219 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 03:04:19,219 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:04:19,219 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:04:19,223 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-28 03:04:19,224 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 03:04:19,224 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 03:04:19,224 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-11-28 03:04:19,225 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 03:04:19,225 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:04:19,225 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:04:19,225 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-28 03:04:19,225 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 03:04:19,230 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 3#L12-2true [2020-11-28 03:04:19,231 INFO L796 eck$LassoCheckResult]: Loop: 3#L12-2true assume !!(main_~c~0 > 0); 6#L12true assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 3#L12-2true [2020-11-28 03:04:19,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:19,236 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-28 03:04:19,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:19,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431368864] [2020-11-28 03:04:19,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:19,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:19,306 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:19,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:19,310 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:19,324 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:19,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:19,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2020-11-28 03:04:19,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:19,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657635396] [2020-11-28 03:04:19,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:19,340 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:19,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:19,345 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:19,347 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:19,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:19,349 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2020-11-28 03:04:19,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:19,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419617822] [2020-11-28 03:04:19,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:19,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:19,360 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:19,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:19,366 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:19,368 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:19,492 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:04:19,492 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:04:19,493 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:04:19,493 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:04:19,493 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:04:19,493 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:19,493 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:04:19,494 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:04:19,494 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration1_Loop [2020-11-28 03:04:19,494 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:04:19,494 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:04:19,515 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:19,526 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:19,532 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:19,561 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:19,735 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:04:19,735 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:19,750 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:19,750 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:04:19,762 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:04:19,763 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_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:19,787 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:19,787 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:04:19,791 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:04:19,792 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_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/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 [2020-11-28 03:04:19,822 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:19,822 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/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) [2020-11-28 03:04:19,880 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:04:19,880 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:19,922 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:04:19,924 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:04:19,925 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:04:19,925 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:04:19,925 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:04:19,925 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:04:19,925 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:19,925 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:04:19,926 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:04:19,926 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration1_Loop [2020-11-28 03:04:19,926 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:04:19,926 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:04:19,928 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:19,937 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:19,950 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:19,958 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:20,075 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:04:20,080 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:04:20,086 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 [2020-11-28 03:04:20,088 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:20,089 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:20,089 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:20,089 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:20,100 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:04:20,101 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:20,112 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/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) [2020-11-28 03:04:20,156 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 [2020-11-28 03:04:20,159 INFO L338 nArgumentSynthesizer]: Template has degree 0. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:20,160 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:20,160 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:20,160 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:20,166 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:04:20,166 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:04:20,171 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/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 [2020-11-28 03:04:20,199 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:04:20,201 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:20,201 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:04:20,202 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:20,202 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:20,202 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:20,204 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:04:20,204 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:04:20,210 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:04:20,220 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:04:20,220 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:20,262 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:04:20,262 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:04:20,263 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:04:20,263 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-11-28 03:04:20,301 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:04:20,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:20,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:20,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:04:20,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:20,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:20,360 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:04:20,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:20,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:20,375 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 [2020-11-28 03:04:20,376 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2020-11-28 03:04:20,418 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 23 states and 30 transitions. Complement of second has 6 states. [2020-11-28 03:04:20,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:04:20,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:04:20,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-11-28 03:04:20,421 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 2 letters. [2020-11-28 03:04:20,423 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:20,423 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 2 letters. [2020-11-28 03:04:20,423 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:20,423 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 4 letters. [2020-11-28 03:04:20,423 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:20,424 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2020-11-28 03:04:20,427 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 03:04:20,431 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2020-11-28 03:04:20,432 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-11-28 03:04:20,432 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-11-28 03:04:20,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2020-11-28 03:04:20,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:04:20,433 INFO L691 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-11-28 03:04:20,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2020-11-28 03:04:20,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-11-28 03:04:20,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-28 03:04:20,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2020-11-28 03:04:20,458 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-11-28 03:04:20,458 INFO L594 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-11-28 03:04:20,458 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-28 03:04:20,458 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2020-11-28 03:04:20,459 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 03:04:20,459 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:04:20,459 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:04:20,460 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-28 03:04:20,460 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 03:04:20,460 INFO L794 eck$LassoCheckResult]: Stem: 68#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 69#L12-2 assume !!(main_~c~0 > 0); 67#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 63#L12-2 [2020-11-28 03:04:20,460 INFO L796 eck$LassoCheckResult]: Loop: 63#L12-2 assume !!(main_~c~0 > 0); 64#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 63#L12-2 [2020-11-28 03:04:20,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:20,461 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2020-11-28 03:04:20,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:20,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573750623] [2020-11-28 03:04:20,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:20,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:20,468 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:20,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:20,473 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:20,474 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:20,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:20,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2020-11-28 03:04:20,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:20,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309011062] [2020-11-28 03:04:20,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:20,481 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:20,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:20,485 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:20,486 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:20,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:20,487 INFO L82 PathProgramCache]: Analyzing trace with hash 29865320, now seen corresponding path program 1 times [2020-11-28 03:04:20,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:20,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012530202] [2020-11-28 03:04:20,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:20,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:20,495 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:20,502 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:20,503 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:20,599 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:04:20,599 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:04:20,599 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:04:20,599 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:04:20,599 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:04:20,600 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:20,600 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:04:20,600 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:04:20,600 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration2_Loop [2020-11-28 03:04:20,600 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:04:20,600 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:04:20,602 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:20,609 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:20,624 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:20,629 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:20,701 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:04:20,701 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:04:20,712 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:20,712 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:20,717 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:04:20,717 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_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:04:20,765 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:20,765 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/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) [2020-11-28 03:04:20,810 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:04:20,810 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:20,852 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:04:20,854 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:04:20,854 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:04:20,855 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:04:20,855 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:04:20,855 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:04:20,855 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:20,855 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:04:20,855 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:04:20,855 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration2_Loop [2020-11-28 03:04:20,855 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:04:20,855 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:04:20,857 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:20,862 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:20,874 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:20,883 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:20,947 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:04:20,948 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/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) [2020-11-28 03:04:20,956 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 [2020-11-28 03:04:20,957 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:20,958 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:20,958 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:20,958 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:20,965 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:04:20,966 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:20,972 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/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 [2020-11-28 03:04:21,002 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 [2020-11-28 03:04:21,004 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:21,004 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:04:21,004 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:21,004 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:21,004 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:21,006 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:04:21,006 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:04:21,008 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:04:21,010 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-28 03:04:21,010 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:04:21,018 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:04:21,018 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:04:21,018 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:04:21,018 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~c~0) = 1*ULTIMATE.start_main_~c~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:21,044 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:04:21,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:21,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:21,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:04:21,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:21,091 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:04:21,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:21,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:21,105 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 [2020-11-28 03:04:21,106 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-11-28 03:04:21,125 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 11 states and 16 transitions. Complement of second has 5 states. [2020-11-28 03:04:21,126 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 [2020-11-28 03:04:21,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:04:21,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2020-11-28 03:04:21,127 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2020-11-28 03:04:21,127 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:21,127 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2020-11-28 03:04:21,128 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:21,128 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2020-11-28 03:04:21,128 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:21,128 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 16 transitions. [2020-11-28 03:04:21,129 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 03:04:21,130 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 16 transitions. [2020-11-28 03:04:21,130 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-11-28 03:04:21,130 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-11-28 03:04:21,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2020-11-28 03:04:21,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:04:21,130 INFO L691 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2020-11-28 03:04:21,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2020-11-28 03:04:21,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-28 03:04:21,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-28 03:04:21,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2020-11-28 03:04:21,132 INFO L714 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2020-11-28 03:04:21,132 INFO L594 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2020-11-28 03:04:21,132 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-28 03:04:21,133 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 16 transitions. [2020-11-28 03:04:21,136 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 03:04:21,136 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:04:21,136 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:04:21,137 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2020-11-28 03:04:21,137 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 03:04:21,138 INFO L794 eck$LassoCheckResult]: Stem: 122#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 123#L12-2 assume !!(main_~c~0 > 0); 121#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 124#L12-2 assume !!(main_~c~0 > 0); 125#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 117#L12-2 [2020-11-28 03:04:21,138 INFO L796 eck$LassoCheckResult]: Loop: 117#L12-2 assume !!(main_~c~0 > 0); 118#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 117#L12-2 [2020-11-28 03:04:21,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:21,138 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 2 times [2020-11-28 03:04:21,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:21,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658313955] [2020-11-28 03:04:21,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:21,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:21,162 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:21,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:21,170 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:21,172 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:21,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:21,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 3 times [2020-11-28 03:04:21,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:21,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051468884] [2020-11-28 03:04:21,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:21,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:21,177 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:21,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:21,180 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:21,181 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:21,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:21,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1364196307, now seen corresponding path program 2 times [2020-11-28 03:04:21,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:21,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249562021] [2020-11-28 03:04:21,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:21,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:21,234 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:21,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:21,245 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:21,247 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:21,270 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:04:21,271 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:04:21,271 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:04:21,271 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:04:21,271 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:04:21,271 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:21,271 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:04:21,271 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:04:21,271 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration3_Loop [2020-11-28 03:04:21,271 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:04:21,271 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:04:21,273 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:21,280 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:21,283 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:21,290 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:21,370 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:04:21,370 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/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) [2020-11-28 03:04:21,386 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:21,386 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/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) [2020-11-28 03:04:21,431 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:04:21,432 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:21,467 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:04:21,468 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:04:21,469 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:04:21,469 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:04:21,469 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:04:21,469 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:04:21,469 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:21,469 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:04:21,469 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:04:21,469 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration3_Loop [2020-11-28 03:04:21,469 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:04:21,470 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:04:21,471 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:21,485 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:21,494 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:21,497 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:21,581 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:04:21,581 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:04:21,588 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 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:21,589 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:21,589 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:04:21,589 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:21,590 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:21,590 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:21,591 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:04:21,591 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:04:21,598 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:04:21,607 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:04:21,608 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:04:21,615 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:04:21,615 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:04:21,615 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:04:21,615 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:21,652 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:04:21,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:21,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:21,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:04:21,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:21,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:21,686 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:04:21,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:21,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:21,687 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 [2020-11-28 03:04:21,687 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2020-11-28 03:04:21,697 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 13 states and 20 transitions. Complement of second has 5 states. [2020-11-28 03:04:21,699 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 [2020-11-28 03:04:21,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:04:21,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2020-11-28 03:04:21,699 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2020-11-28 03:04:21,699 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:21,700 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:04:21,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:21,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:21,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:04:21,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:21,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:21,734 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:04:21,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:21,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:21,735 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 [2020-11-28 03:04:21,736 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2020-11-28 03:04:21,752 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 13 states and 20 transitions. Complement of second has 5 states. [2020-11-28 03:04:21,753 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 [2020-11-28 03:04:21,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:04:21,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2020-11-28 03:04:21,754 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2020-11-28 03:04:21,754 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:21,754 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:04:21,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:21,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:21,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:04:21,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:21,791 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:04:21,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:21,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:21,792 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 [2020-11-28 03:04:21,792 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2020-11-28 03:04:21,806 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 15 states and 23 transitions. Complement of second has 4 states. [2020-11-28 03:04:21,808 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 [2020-11-28 03:04:21,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:04:21,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2020-11-28 03:04:21,808 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 2 letters. [2020-11-28 03:04:21,809 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:21,809 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 7 letters. Loop has 2 letters. [2020-11-28 03:04:21,809 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:21,809 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 4 letters. [2020-11-28 03:04:21,810 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:21,810 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 23 transitions. [2020-11-28 03:04:21,811 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-28 03:04:21,812 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 13 states and 19 transitions. [2020-11-28 03:04:21,812 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-11-28 03:04:21,812 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-11-28 03:04:21,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2020-11-28 03:04:21,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:04:21,812 INFO L691 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2020-11-28 03:04:21,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2020-11-28 03:04:21,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 5. [2020-11-28 03:04:21,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-28 03:04:21,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 7 transitions. [2020-11-28 03:04:21,816 INFO L714 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2020-11-28 03:04:21,816 INFO L594 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2020-11-28 03:04:21,816 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-28 03:04:21,816 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 7 transitions. [2020-11-28 03:04:21,818 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-28 03:04:21,818 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:04:21,818 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:04:21,819 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-28 03:04:21,819 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 03:04:21,819 INFO L794 eck$LassoCheckResult]: Stem: 265#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 261#L12-2 [2020-11-28 03:04:21,819 INFO L796 eck$LassoCheckResult]: Loop: 261#L12-2 assume !!(main_~c~0 > 0); 263#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 261#L12-2 [2020-11-28 03:04:21,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:21,820 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2020-11-28 03:04:21,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:21,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925627613] [2020-11-28 03:04:21,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:21,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:21,824 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:21,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:21,826 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:21,827 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:21,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:21,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1286, now seen corresponding path program 1 times [2020-11-28 03:04:21,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:21,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063003068] [2020-11-28 03:04:21,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:21,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:21,837 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:21,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:21,845 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:21,848 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:21,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:21,849 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 3 times [2020-11-28 03:04:21,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:21,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8944528] [2020-11-28 03:04:21,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:21,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:21,866 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:21,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:21,874 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:21,877 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:21,901 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:04:21,901 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:04:21,901 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:04:21,901 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:04:21,901 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:04:21,902 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:21,902 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:04:21,902 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:04:21,902 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration4_Loop [2020-11-28 03:04:21,902 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:04:21,902 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:04:21,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:21,908 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:21,970 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:21,974 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:22,040 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:04:22,040 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/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 [2020-11-28 03:04:22,063 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:22,063 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:04:22,069 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:04:22,070 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:22,093 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:22,093 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:22,119 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:04:22,120 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:04:22,129 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:04:22,129 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=1} Honda state: {ULTIMATE.start_main_~c~0=1} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=1}] Lambdas: [2, 2, 1] Nus: [1, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/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 [2020-11-28 03:04:22,161 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:22,161 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:04:22,163 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:04:22,164 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/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 [2020-11-28 03:04:22,187 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:22,188 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:04:22,212 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:04:22,212 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:22,253 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:04:22,255 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:04:22,255 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:04:22,255 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:04:22,255 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:04:22,255 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:04:22,255 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:22,256 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:04:22,256 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:04:22,256 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration4_Loop [2020-11-28 03:04:22,256 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:04:22,256 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:04:22,257 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:22,264 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:22,273 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:22,277 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:22,342 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:04:22,342 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/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) [2020-11-28 03:04:22,355 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 [2020-11-28 03:04:22,357 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:22,358 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:04:22,358 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:22,358 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:22,358 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:22,359 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:04:22,359 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:22,365 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/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) [2020-11-28 03:04:22,409 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 [2020-11-28 03:04:22,411 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:22,411 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:22,411 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:22,411 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:22,423 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:04:22,423 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:22,429 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/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) [2020-11-28 03:04:22,466 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:22,468 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:22,468 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:22,468 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:22,468 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:22,471 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:04:22,471 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:04:22,476 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/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 [2020-11-28 03:04:22,511 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 [2020-11-28 03:04:22,512 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:22,512 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:04:22,512 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:22,512 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:22,512 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:22,513 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:04:22,513 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:04:22,515 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:04:22,518 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:04:22,518 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:22,520 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:04:22,520 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:04:22,520 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:04:22,521 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 211 Supporting invariants [] [2020-11-28 03:04:22,557 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:04:22,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:22,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:22,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:04:22,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:22,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:22,596 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:04:22,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:22,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:22,598 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 [2020-11-28 03:04:22,598 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2020-11-28 03:04:22,607 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 11 states and 17 transitions. Complement of second has 5 states. [2020-11-28 03:04:22,609 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 [2020-11-28 03:04:22,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:04:22,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3 transitions. [2020-11-28 03:04:22,610 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 3 transitions. Stem has 1 letters. Loop has 2 letters. [2020-11-28 03:04:22,610 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:22,610 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 3 transitions. Stem has 3 letters. Loop has 2 letters. [2020-11-28 03:04:22,610 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:22,610 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 3 transitions. Stem has 1 letters. Loop has 4 letters. [2020-11-28 03:04:22,610 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:22,611 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 17 transitions. [2020-11-28 03:04:22,611 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-28 03:04:22,612 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 9 states and 13 transitions. [2020-11-28 03:04:22,612 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-11-28 03:04:22,612 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-11-28 03:04:22,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2020-11-28 03:04:22,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:04:22,613 INFO L691 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2020-11-28 03:04:22,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2020-11-28 03:04:22,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2020-11-28 03:04:22,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-28 03:04:22,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 12 transitions. [2020-11-28 03:04:22,614 INFO L714 BuchiCegarLoop]: Abstraction has 8 states and 12 transitions. [2020-11-28 03:04:22,614 INFO L594 BuchiCegarLoop]: Abstraction has 8 states and 12 transitions. [2020-11-28 03:04:22,614 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-28 03:04:22,614 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 12 transitions. [2020-11-28 03:04:22,615 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-28 03:04:22,615 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:04:22,615 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:04:22,617 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1] [2020-11-28 03:04:22,617 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 03:04:22,617 INFO L794 eck$LassoCheckResult]: Stem: 310#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 306#L12-2 assume !!(main_~c~0 > 0); 307#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 313#L12-2 assume !!(main_~c~0 > 0); 311#L12 [2020-11-28 03:04:22,617 INFO L796 eck$LassoCheckResult]: Loop: 311#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 312#L12-2 assume !!(main_~c~0 > 0); 311#L12 [2020-11-28 03:04:22,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:22,621 INFO L82 PathProgramCache]: Analyzing trace with hash 963335, now seen corresponding path program 2 times [2020-11-28 03:04:22,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:22,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139462882] [2020-11-28 03:04:22,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:22,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:22,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:22,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139462882] [2020-11-28 03:04:22,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:04:22,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:04:22,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097615829] [2020-11-28 03:04:22,668 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-28 03:04:22,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:22,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 2 times [2020-11-28 03:04:22,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:22,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197443867] [2020-11-28 03:04:22,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:22,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:22,673 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:22,675 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:22,676 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:22,697 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:04:22,697 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:04:22,697 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:04:22,697 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:04:22,697 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:04:22,697 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:22,697 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:04:22,697 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:04:22,697 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration5_Loop [2020-11-28 03:04:22,698 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:04:22,698 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:04:22,699 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:22,708 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:22,716 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:22,720 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:22,802 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:04:22,802 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/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) [2020-11-28 03:04:22,808 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:22,808 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:22,841 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:04:22,841 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:04:22,894 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:04:22,894 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=1}] Lambdas: [1, 3, 1] Nus: [1, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/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) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:22,928 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:22,929 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:22,953 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:04:22,953 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:04:22,984 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:04:22,985 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:04:22,985 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:04:22,985 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:04:22,985 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:04:22,985 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:04:22,985 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:22,985 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:04:22,985 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:04:22,985 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration5_Loop [2020-11-28 03:04:22,986 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:04:22,986 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:04:22,987 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:22,995 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:23,022 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:23,029 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:23,120 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:04:23,120 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:23,125 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 [2020-11-28 03:04:23,126 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:23,126 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:04:23,126 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:23,126 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:23,127 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:23,128 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:04:23,128 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:04:23,130 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:23,153 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 [2020-11-28 03:04:23,154 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:23,154 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:23,154 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:23,154 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:23,157 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:04:23,158 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:04:23,166 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:04:23,204 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 [2020-11-28 03:04:23,206 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:23,206 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:04:23,206 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:23,207 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:23,207 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:23,208 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:04:23,208 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:23,210 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:04:23,213 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:04:23,214 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:04:23,218 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:04:23,219 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:04:23,219 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:04:23,219 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 211 Supporting invariants [] Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:23,254 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:04:23,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:23,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:23,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:04:23,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:23,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:23,286 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:04:23,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:23,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:23,360 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 [2020-11-28 03:04:23,360 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6 Second operand 3 states. [2020-11-28 03:04:23,370 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 13 states and 17 transitions. Complement of second has 5 states. [2020-11-28 03:04:23,373 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 [2020-11-28 03:04:23,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:04:23,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2020-11-28 03:04:23,374 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 4 letters. Loop has 2 letters. [2020-11-28 03:04:23,374 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:23,374 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:04:23,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:23,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:23,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:04:23,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:23,405 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:04:23,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:23,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:23,434 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-28 03:04:23,434 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6 Second operand 3 states. [2020-11-28 03:04:23,464 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 10 states and 14 transitions. Complement of second has 5 states. [2020-11-28 03:04:23,464 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 [2020-11-28 03:04:23,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:04:23,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2020-11-28 03:04:23,465 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2020-11-28 03:04:23,465 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:23,465 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:04:23,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:23,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:04:23,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:23,493 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:04:23,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:23,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:23,517 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-28 03:04:23,517 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6 Second operand 3 states. [2020-11-28 03:04:23,525 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 16 states and 20 transitions. Complement of second has 4 states. [2020-11-28 03:04:23,525 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 [2020-11-28 03:04:23,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:04:23,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2020-11-28 03:04:23,526 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2020-11-28 03:04:23,526 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:23,526 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2020-11-28 03:04:23,527 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:23,527 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 4 letters. [2020-11-28 03:04:23,527 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:23,528 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 20 transitions. [2020-11-28 03:04:23,528 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-28 03:04:23,535 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 12 states and 16 transitions. [2020-11-28 03:04:23,536 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-11-28 03:04:23,536 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2020-11-28 03:04:23,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 16 transitions. [2020-11-28 03:04:23,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:04:23,536 INFO L691 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2020-11-28 03:04:23,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 16 transitions. [2020-11-28 03:04:23,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 7. [2020-11-28 03:04:23,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-28 03:04:23,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2020-11-28 03:04:23,540 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-11-28 03:04:23,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:04:23,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:04:23,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:04:23,544 INFO L87 Difference]: Start difference. First operand 7 states and 10 transitions. Second operand 4 states. [2020-11-28 03:04:23,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:04:23,569 INFO L93 Difference]: Finished difference Result 10 states and 12 transitions. [2020-11-28 03:04:23,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:04:23,571 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2020-11-28 03:04:23,572 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-28 03:04:23,572 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 8 states and 10 transitions. [2020-11-28 03:04:23,572 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-11-28 03:04:23,572 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2020-11-28 03:04:23,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 10 transitions. [2020-11-28 03:04:23,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:04:23,573 INFO L691 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2020-11-28 03:04:23,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 10 transitions. [2020-11-28 03:04:23,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2020-11-28 03:04:23,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-28 03:04:23,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2020-11-28 03:04:23,574 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2020-11-28 03:04:23,574 INFO L594 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2020-11-28 03:04:23,574 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-28 03:04:23,574 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2020-11-28 03:04:23,574 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-28 03:04:23,574 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:04:23,575 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:04:23,575 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 1, 1, 1] [2020-11-28 03:04:23,575 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1] [2020-11-28 03:04:23,575 INFO L794 eck$LassoCheckResult]: Stem: 460#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 456#L12-2 assume !!(main_~c~0 > 0); 457#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 458#L12-2 assume !!(main_~c~0 > 0); 459#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 462#L12-2 assume !!(main_~c~0 > 0); 461#L12 [2020-11-28 03:04:23,575 INFO L796 eck$LassoCheckResult]: Loop: 461#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 458#L12-2 assume !!(main_~c~0 > 0); 459#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 462#L12-2 assume !!(main_~c~0 > 0); 461#L12 [2020-11-28 03:04:23,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:23,576 INFO L82 PathProgramCache]: Analyzing trace with hash 925824930, now seen corresponding path program 3 times [2020-11-28 03:04:23,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:23,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658837901] [2020-11-28 03:04:23,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:23,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:23,587 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:23,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:23,591 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:23,592 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:23,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:23,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1380409, now seen corresponding path program 1 times [2020-11-28 03:04:23,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:23,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695198016] [2020-11-28 03:04:23,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:23,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:23,598 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:23,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:23,601 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:23,602 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:23,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:23,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1848815782, now seen corresponding path program 4 times [2020-11-28 03:04:23,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:23,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078300638] [2020-11-28 03:04:23,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:23,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:23,610 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:23,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:23,616 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:23,617 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:23,664 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:04:23,665 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:04:23,665 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:04:23,665 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:04:23,665 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:04:23,665 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:23,665 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:04:23,665 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:04:23,665 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration6_Loop [2020-11-28 03:04:23,665 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:04:23,665 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:04:23,666 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:23,670 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:23,673 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:23,693 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:23,764 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:04:23,764 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 39 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 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:23,775 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:23,775 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:04:23,782 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:04:23,782 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:23,808 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:23,808 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:04:23,811 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:04:23,811 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:23,835 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:23,835 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:23,859 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:04:23,859 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:04:23,863 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:04:23,883 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:04:23,883 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:04:23,883 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:04:23,883 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:04:23,883 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:04:23,884 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:23,884 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:04:23,884 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:04:23,884 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration6_Loop [2020-11-28 03:04:23,884 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:04:23,884 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:04:23,885 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:23,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:23,895 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:23,902 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:23,957 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:04:23,957 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:23,967 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:04:23,968 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:23,968 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:04:23,969 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:23,969 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:23,969 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:23,970 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:04:23,970 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:04:23,972 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:04:23,975 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:04:23,975 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:23,979 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:04:23,979 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:04:23,979 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:04:23,980 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 201 Supporting invariants [] [2020-11-28 03:04:24,007 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:04:24,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:24,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:24,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:04:24,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:24,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:24,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:04:24,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:24,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:24,093 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-28 03:04:24,093 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. [2020-11-28 03:04:24,107 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 13 states and 16 transitions. Complement of second has 5 states. [2020-11-28 03:04:24,107 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 [2020-11-28 03:04:24,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 03:04:24,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2020-11-28 03:04:24,108 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 6 letters. Loop has 4 letters. [2020-11-28 03:04:24,108 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:24,108 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:04:24,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:24,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:04:24,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:24,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:24,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:04:24,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:24,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:24,184 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-28 03:04:24,184 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. [2020-11-28 03:04:24,210 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 11 states and 14 transitions. Complement of second has 5 states. [2020-11-28 03:04:24,211 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 [2020-11-28 03:04:24,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 03:04:24,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2020-11-28 03:04:24,211 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 6 letters. Loop has 4 letters. [2020-11-28 03:04:24,211 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:24,211 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:04:24,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:24,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:24,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:04:24,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:24,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:24,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:04:24,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:24,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:24,281 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-28 03:04:24,281 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. [2020-11-28 03:04:24,289 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 16 states and 19 transitions. Complement of second has 4 states. [2020-11-28 03:04:24,290 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 [2020-11-28 03:04:24,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 03:04:24,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2020-11-28 03:04:24,291 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2020-11-28 03:04:24,291 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:24,291 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:04:24,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:24,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:24,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:04:24,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:24,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:24,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:04:24,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:24,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:24,358 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-28 03:04:24,358 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. [2020-11-28 03:04:24,380 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 13 states and 18 transitions. Complement of second has 4 states. [2020-11-28 03:04:24,382 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 [2020-11-28 03:04:24,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 03:04:24,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2020-11-28 03:04:24,382 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 4 letters. [2020-11-28 03:04:24,383 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:24,383 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:04:24,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:24,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:04:24,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:24,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:04:24,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:24,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:24,460 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemin loopwithout honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-28 03:04:24,461 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. [2020-11-28 03:04:24,582 INFO L108 BuchiDifferenceFKV]: Finished buchiDifferenceFKV. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. Result 72 states and 96 transitions. Complement of second has 37 states 8 powerset states29 rank states. The highest rank that occured is 5 [2020-11-28 03:04:24,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-11-28 03:04:24,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 03:04:24,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2020-11-28 03:04:24,586 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 6 letters. Loop has 4 letters. [2020-11-28 03:04:24,589 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:24,590 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 10 letters. Loop has 4 letters. [2020-11-28 03:04:24,591 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:24,592 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 6 letters. Loop has 8 letters. [2020-11-28 03:04:24,593 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:24,595 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 72 states and 96 transitions. [2020-11-28 03:04:24,600 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-11-28 03:04:24,603 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 72 states to 27 states and 38 transitions. [2020-11-28 03:04:24,604 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2 [2020-11-28 03:04:24,604 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2 [2020-11-28 03:04:24,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 38 transitions. [2020-11-28 03:04:24,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:04:24,604 INFO L691 BuchiCegarLoop]: Abstraction has 27 states and 38 transitions. [2020-11-28 03:04:24,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 38 transitions. [2020-11-28 03:04:24,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 15. [2020-11-28 03:04:24,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-28 03:04:24,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 22 transitions. [2020-11-28 03:04:24,610 INFO L714 BuchiCegarLoop]: Abstraction has 15 states and 22 transitions. [2020-11-28 03:04:24,610 INFO L594 BuchiCegarLoop]: Abstraction has 15 states and 22 transitions. [2020-11-28 03:04:24,610 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-11-28 03:04:24,610 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 22 transitions. [2020-11-28 03:04:24,612 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-11-28 03:04:24,612 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:04:24,612 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:04:24,614 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [4, 2, 1, 1] [2020-11-28 03:04:24,614 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 1] [2020-11-28 03:04:24,614 INFO L794 eck$LassoCheckResult]: Stem: 822#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 823#L12-2 assume !!(main_~c~0 > 0); 826#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 825#L12-2 assume !!(main_~c~0 > 0); 830#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 829#L12-2 assume !!(main_~c~0 > 0); 828#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 827#L12-2 assume !!(main_~c~0 > 0); 824#L12 [2020-11-28 03:04:24,614 INFO L796 eck$LassoCheckResult]: Loop: 824#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 825#L12-2 assume !!(main_~c~0 > 0); 830#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 829#L12-2 assume !!(main_~c~0 > 0); 828#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 827#L12-2 assume !!(main_~c~0 > 0); 824#L12 [2020-11-28 03:04:24,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:24,616 INFO L82 PathProgramCache]: Analyzing trace with hash 659527871, now seen corresponding path program 5 times [2020-11-28 03:04:24,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:24,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415527165] [2020-11-28 03:04:24,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:24,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:24,656 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 03:04:24,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415527165] [2020-11-28 03:04:24,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463308558] [2020-11-28 03:04:24,657 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:04:24,675 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-11-28 03:04:24,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:04:24,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:04:24,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:24,685 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 03:04:24,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:04:24,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-11-28 03:04:24,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79095726] [2020-11-28 03:04:24,686 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-28 03:04:24,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:24,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1326573462, now seen corresponding path program 2 times [2020-11-28 03:04:24,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:24,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300974832] [2020-11-28 03:04:24,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:24,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:24,692 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:24,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:24,696 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:24,697 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:24,775 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:04:24,775 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:04:24,775 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:04:24,775 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:04:24,775 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:04:24,775 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:24,775 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:04:24,775 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:04:24,776 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration7_Loop [2020-11-28 03:04:24,776 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:04:24,776 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:04:24,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:24,781 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:24,790 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:24,797 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:24,868 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:04:24,868 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:24,871 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:24,871 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:04:24,873 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:04:24,874 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_13=1} Honda state: {v_rep~unnamed0~0~true_13=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:24,897 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:24,897 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:04:24,917 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:04:24,917 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_13=0} Honda state: {v_rep~unnamed0~0~false_13=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:24,941 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:24,941 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:24,967 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:04:24,967 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:04:25,015 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:04:25,016 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:04:25,016 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:04:25,016 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:04:25,016 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:04:25,017 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:04:25,017 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:25,017 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:04:25,017 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:04:25,017 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration7_Loop [2020-11-28 03:04:25,017 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:04:25,017 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:04:25,018 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:25,031 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:25,034 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:25,039 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:25,100 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:04:25,100 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:25,107 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 [2020-11-28 03:04:25,108 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:25,109 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:25,109 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:25,109 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:25,110 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:04:25,111 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:04:25,113 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:25,138 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 [2020-11-28 03:04:25,139 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:25,139 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:25,139 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:25,139 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:25,150 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:04:25,150 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:04:25,154 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:04:25,195 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 [2020-11-28 03:04:25,196 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:25,197 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:04:25,197 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:25,197 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:25,197 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:25,198 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:04:25,198 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:25,201 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:04:25,205 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:04:25,205 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:04:25,211 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:04:25,211 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:04:25,211 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:04:25,211 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~c~0) = 1*ULTIMATE.start_main_~c~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:25,248 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:04:25,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:25,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:04:25,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:25,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:25,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:04:25,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:25,326 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 03:04:25,326 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-28 03:04:25,327 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 22 transitions. cyclomatic complexity: 9 Second operand 5 states. [2020-11-28 03:04:25,373 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 22 transitions. cyclomatic complexity: 9. Second operand 5 states. Result 61 states and 87 transitions. Complement of second has 9 states. [2020-11-28 03:04:25,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-11-28 03:04:25,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-28 03:04:25,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 10 transitions. [2020-11-28 03:04:25,376 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 8 letters. Loop has 6 letters. [2020-11-28 03:04:25,376 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:25,376 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 14 letters. Loop has 6 letters. [2020-11-28 03:04:25,377 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:25,377 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 8 letters. Loop has 12 letters. [2020-11-28 03:04:25,377 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:25,377 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 61 states and 87 transitions. [2020-11-28 03:04:25,378 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-11-28 03:04:25,379 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 61 states to 52 states and 75 transitions. [2020-11-28 03:04:25,379 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-11-28 03:04:25,380 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2020-11-28 03:04:25,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 75 transitions. [2020-11-28 03:04:25,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:04:25,380 INFO L691 BuchiCegarLoop]: Abstraction has 52 states and 75 transitions. [2020-11-28 03:04:25,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 75 transitions. [2020-11-28 03:04:25,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2020-11-28 03:04:25,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-28 03:04:25,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 67 transitions. [2020-11-28 03:04:25,409 INFO L714 BuchiCegarLoop]: Abstraction has 46 states and 67 transitions. [2020-11-28 03:04:25,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:04:25,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:04:25,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:04:25,414 INFO L87 Difference]: Start difference. First operand 46 states and 67 transitions. Second operand 5 states. [2020-11-28 03:04:25,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:04:25,453 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2020-11-28 03:04:25,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:04:25,455 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 51 transitions. [2020-11-28 03:04:25,456 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-11-28 03:04:25,456 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 27 states and 36 transitions. [2020-11-28 03:04:25,456 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2 [2020-11-28 03:04:25,457 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2 [2020-11-28 03:04:25,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 36 transitions. [2020-11-28 03:04:25,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:04:25,457 INFO L691 BuchiCegarLoop]: Abstraction has 27 states and 36 transitions. [2020-11-28 03:04:25,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 36 transitions. [2020-11-28 03:04:25,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2020-11-28 03:04:25,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-28 03:04:25,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 30 transitions. [2020-11-28 03:04:25,459 INFO L714 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2020-11-28 03:04:25,459 INFO L594 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2020-11-28 03:04:25,459 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-11-28 03:04:25,459 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 30 transitions. [2020-11-28 03:04:25,460 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-11-28 03:04:25,460 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:04:25,460 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:04:25,460 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [5, 2, 2, 1] [2020-11-28 03:04:25,460 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 1] [2020-11-28 03:04:25,461 INFO L794 eck$LassoCheckResult]: Stem: 1076#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 1077#L12-2 assume !!(main_~c~0 > 0); 1093#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1091#L12-2 assume !!(main_~c~0 > 0); 1084#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1079#L12-2 assume !!(main_~c~0 > 0); 1085#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1083#L12-2 assume !!(main_~c~0 > 0); 1082#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1081#L12-2 assume !!(main_~c~0 > 0); 1078#L12 [2020-11-28 03:04:25,461 INFO L796 eck$LassoCheckResult]: Loop: 1078#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1079#L12-2 assume !!(main_~c~0 > 0); 1085#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1083#L12-2 assume !!(main_~c~0 > 0); 1082#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1081#L12-2 assume !!(main_~c~0 > 0); 1078#L12 [2020-11-28 03:04:25,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:25,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1791617062, now seen corresponding path program 6 times [2020-11-28 03:04:25,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:25,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732640644] [2020-11-28 03:04:25,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:25,468 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:25,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:25,478 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:25,479 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:25,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:25,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1326573462, now seen corresponding path program 3 times [2020-11-28 03:04:25,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:25,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875140405] [2020-11-28 03:04:25,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:25,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:25,492 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:25,501 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:25,502 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:25,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:25,502 INFO L82 PathProgramCache]: Analyzing trace with hash 709032111, now seen corresponding path program 7 times [2020-11-28 03:04:25,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:25,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156404127] [2020-11-28 03:04:25,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:25,556 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 41 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 03:04:25,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156404127] [2020-11-28 03:04:25,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601035655] [2020-11-28 03:04:25,557 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:04:25,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:25,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:04:25,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:25,614 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 41 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 03:04:25,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:04:25,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-11-28 03:04:25,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710974813] [2020-11-28 03:04:25,710 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:04:25,711 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:04:25,711 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:04:25,711 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:04:25,711 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:04:25,711 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:25,711 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:04:25,711 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:04:25,711 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration8_Loop [2020-11-28 03:04:25,711 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:04:25,712 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:04:25,712 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:25,720 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:25,729 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:25,739 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:25,796 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:04:25,796 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:25,800 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:25,801 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:04:25,803 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:04:25,803 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_15=1} Honda state: {v_rep~unnamed0~0~true_15=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:25,829 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:25,829 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 57 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 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:25,858 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:04:25,858 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:04:25,861 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:04:25,882 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:04:25,882 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:04:25,882 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:04:25,882 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:04:25,882 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:04:25,882 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:25,882 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:04:25,882 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:04:25,882 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration8_Loop [2020-11-28 03:04:25,882 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:04:25,882 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:04:25,883 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:25,887 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:25,893 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:25,898 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:25,946 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:04:25,946 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 58 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 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:25,949 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 [2020-11-28 03:04:25,950 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:25,950 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:25,950 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:25,950 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:25,953 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:04:25,953 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:04:25,959 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 59 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 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:25,981 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 [2020-11-28 03:04:25,982 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:25,982 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:04:25,982 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:25,983 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:25,983 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:25,983 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:04:25,983 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:04:25,985 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:04:25,987 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-28 03:04:25,987 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 60 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 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:25,989 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:04:25,989 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:04:25,989 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:04:25,989 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-11-28 03:04:26,010 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:04:26,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:26,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:26,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:04:26,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:26,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:04:26,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:26,089 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:26,090 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2020-11-28 03:04:26,090 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand 5 states. [2020-11-28 03:04:26,118 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13. Second operand 5 states. Result 45 states and 56 transitions. Complement of second has 7 states. [2020-11-28 03:04:26,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-28 03:04:26,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-28 03:04:26,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2020-11-28 03:04:26,121 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 10 letters. Loop has 6 letters. [2020-11-28 03:04:26,121 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:26,121 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:04:26,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:26,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:26,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:04:26,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:26,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:26,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:04:26,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:26,224 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:26,224 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 4 loop predicates [2020-11-28 03:04:26,224 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand 5 states. [2020-11-28 03:04:26,263 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13. Second operand 5 states. Result 45 states and 56 transitions. Complement of second has 7 states. [2020-11-28 03:04:26,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-28 03:04:26,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-28 03:04:26,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2020-11-28 03:04:26,266 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 10 letters. Loop has 6 letters. [2020-11-28 03:04:26,267 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:26,267 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:04:26,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:26,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:26,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:04:26,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:26,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:04:26,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:26,352 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:26,353 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2020-11-28 03:04:26,353 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand 5 states. [2020-11-28 03:04:26,393 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13. Second operand 5 states. Result 75 states and 99 transitions. Complement of second has 13 states. [2020-11-28 03:04:26,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-11-28 03:04:26,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-28 03:04:26,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2020-11-28 03:04:26,396 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 10 letters. Loop has 6 letters. [2020-11-28 03:04:26,396 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:26,396 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 16 letters. Loop has 6 letters. [2020-11-28 03:04:26,397 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:26,397 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 10 letters. Loop has 12 letters. [2020-11-28 03:04:26,397 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:26,397 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 75 states and 99 transitions. [2020-11-28 03:04:26,399 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 22 [2020-11-28 03:04:26,400 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 75 states to 52 states and 71 transitions. [2020-11-28 03:04:26,400 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-11-28 03:04:26,400 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2020-11-28 03:04:26,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 71 transitions. [2020-11-28 03:04:26,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:04:26,401 INFO L691 BuchiCegarLoop]: Abstraction has 52 states and 71 transitions. [2020-11-28 03:04:26,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 71 transitions. [2020-11-28 03:04:26,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2020-11-28 03:04:26,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-28 03:04:26,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 58 transitions. [2020-11-28 03:04:26,405 INFO L714 BuchiCegarLoop]: Abstraction has 40 states and 58 transitions. [2020-11-28 03:04:26,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:04:26,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:04:26,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:04:26,407 INFO L87 Difference]: Start difference. First operand 40 states and 58 transitions. Second operand 7 states. [2020-11-28 03:04:26,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:04:26,442 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2020-11-28 03:04:26,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:04:26,443 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 85 transitions. [2020-11-28 03:04:26,444 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 18 [2020-11-28 03:04:26,444 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 51 states and 67 transitions. [2020-11-28 03:04:26,445 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2 [2020-11-28 03:04:26,445 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2020-11-28 03:04:26,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 67 transitions. [2020-11-28 03:04:26,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:04:26,445 INFO L691 BuchiCegarLoop]: Abstraction has 51 states and 67 transitions. [2020-11-28 03:04:26,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states and 67 transitions. [2020-11-28 03:04:26,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 33. [2020-11-28 03:04:26,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-28 03:04:26,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2020-11-28 03:04:26,448 INFO L714 BuchiCegarLoop]: Abstraction has 33 states and 43 transitions. [2020-11-28 03:04:26,448 INFO L594 BuchiCegarLoop]: Abstraction has 33 states and 43 transitions. [2020-11-28 03:04:26,448 INFO L427 BuchiCegarLoop]: ======== Iteration 9============ [2020-11-28 03:04:26,449 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 43 transitions. [2020-11-28 03:04:26,449 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2020-11-28 03:04:26,449 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:04:26,449 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:04:26,450 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2020-11-28 03:04:26,450 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [4, 2, 2] [2020-11-28 03:04:26,450 INFO L794 eck$LassoCheckResult]: Stem: 1621#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 1623#L12-2 assume !!(main_~c~0 > 0); 1637#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1632#L12-2 assume !!(main_~c~0 > 0); 1628#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1629#L12-2 [2020-11-28 03:04:26,451 INFO L796 eck$LassoCheckResult]: Loop: 1629#L12-2 assume !!(main_~c~0 > 0); 1626#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1627#L12-2 assume !!(main_~c~0 > 0); 1631#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1617#L12-2 assume !!(main_~c~0 > 0); 1618#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1624#L12-2 assume !!(main_~c~0 > 0); 1628#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1629#L12-2 [2020-11-28 03:04:26,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:26,451 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 4 times [2020-11-28 03:04:26,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:26,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283881220] [2020-11-28 03:04:26,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:26,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:26,456 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:26,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:26,459 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:26,460 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:26,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:26,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1687002897, now seen corresponding path program 4 times [2020-11-28 03:04:26,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:26,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584654993] [2020-11-28 03:04:26,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:26,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:26,485 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 03:04:26,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584654993] [2020-11-28 03:04:26,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:04:26,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:04:26,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821295758] [2020-11-28 03:04:26,486 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-28 03:04:26,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:04:26,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:04:26,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:04:26,487 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. cyclomatic complexity: 14 Second operand 4 states. [2020-11-28 03:04:26,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:04:26,497 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2020-11-28 03:04:26,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:04:26,500 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 63 transitions. [2020-11-28 03:04:26,501 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2020-11-28 03:04:26,501 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 39 states and 47 transitions. [2020-11-28 03:04:26,501 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-11-28 03:04:26,501 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-11-28 03:04:26,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 47 transitions. [2020-11-28 03:04:26,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:04:26,502 INFO L691 BuchiCegarLoop]: Abstraction has 39 states and 47 transitions. [2020-11-28 03:04:26,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 47 transitions. [2020-11-28 03:04:26,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2020-11-28 03:04:26,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-28 03:04:26,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2020-11-28 03:04:26,506 INFO L714 BuchiCegarLoop]: Abstraction has 33 states and 41 transitions. [2020-11-28 03:04:26,506 INFO L594 BuchiCegarLoop]: Abstraction has 33 states and 41 transitions. [2020-11-28 03:04:26,506 INFO L427 BuchiCegarLoop]: ======== Iteration 10============ [2020-11-28 03:04:26,507 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 41 transitions. [2020-11-28 03:04:26,507 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2020-11-28 03:04:26,507 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:04:26,507 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:04:26,507 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2020-11-28 03:04:26,508 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [5, 3, 2] [2020-11-28 03:04:26,508 INFO L794 eck$LassoCheckResult]: Stem: 1712#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 1714#L12-2 assume !!(main_~c~0 > 0); 1728#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1723#L12-2 assume !!(main_~c~0 > 0); 1719#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1708#L12-2 [2020-11-28 03:04:26,508 INFO L796 eck$LassoCheckResult]: Loop: 1708#L12-2 assume !!(main_~c~0 > 0); 1709#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1718#L12-2 assume !!(main_~c~0 > 0); 1724#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1722#L12-2 assume !!(main_~c~0 > 0); 1715#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1716#L12-2 assume !!(main_~c~0 > 0); 1727#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1725#L12-2 assume !!(main_~c~0 > 0); 1721#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1708#L12-2 [2020-11-28 03:04:26,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:26,509 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 5 times [2020-11-28 03:04:26,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:26,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092239097] [2020-11-28 03:04:26,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:26,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:26,513 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:26,516 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:26,517 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:26,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:26,518 INFO L82 PathProgramCache]: Analyzing trace with hash 2007111828, now seen corresponding path program 5 times [2020-11-28 03:04:26,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:26,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912988967] [2020-11-28 03:04:26,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:26,524 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:26,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:26,529 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:26,530 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:26,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:26,531 INFO L82 PathProgramCache]: Analyzing trace with hash -254222659, now seen corresponding path program 8 times [2020-11-28 03:04:26,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:26,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867112054] [2020-11-28 03:04:26,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:26,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:26,549 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:26,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:26,556 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:26,557 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:26,657 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:04:26,658 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:04:26,658 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:04:26,658 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:04:26,658 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:04:26,658 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:26,658 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:04:26,658 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:04:26,658 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration10_Loop [2020-11-28 03:04:26,658 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:04:26,658 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:04:26,659 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:26,662 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:26,669 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:26,675 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:26,748 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:04:26,748 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 61 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 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:26,755 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:26,755 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:04:26,758 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:04:26,759 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_17=1} Honda state: {v_rep~unnamed0~0~true_17=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 62 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 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:26,784 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:26,784 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 63 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 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:26,809 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:04:26,809 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:04:26,833 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:04:26,834 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:04:26,834 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:04:26,835 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:04:26,835 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:04:26,835 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:04:26,835 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:26,835 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:04:26,835 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:04:26,835 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration10_Loop [2020-11-28 03:04:26,835 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:04:26,835 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:04:26,836 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:26,839 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:26,845 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:26,848 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:26,911 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:04:26,911 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 64 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 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:26,914 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 [2020-11-28 03:04:26,915 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:26,915 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:26,915 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:26,916 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:26,918 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:04:26,918 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:04:26,922 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:04:26,961 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 [2020-11-28 03:04:26,962 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:26,963 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:04:26,963 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:26,963 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:26,963 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:26,964 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:04:26,964 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:26,969 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:04:26,991 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:04:26,991 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:04:26,994 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:04:26,994 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:04:26,994 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:04:26,994 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:27,031 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:04:27,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:27,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:27,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:04:27,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:27,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:27,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:04:27,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:27,141 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:27,141 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2020-11-28 03:04:27,141 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12 Second operand 7 states. [2020-11-28 03:04:27,146 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12. Second operand 7 states. Result 37 states and 47 transitions. Complement of second has 5 states. [2020-11-28 03:04:27,146 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 [2020-11-28 03:04:27,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-28 03:04:27,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2020-11-28 03:04:27,147 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 5 letters. Loop has 10 letters. [2020-11-28 03:04:27,147 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:27,147 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:04:27,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:27,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:27,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:04:27,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:27,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:27,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:04:27,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:27,237 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:27,237 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 5 loop predicates [2020-11-28 03:04:27,238 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12 Second operand 7 states. [2020-11-28 03:04:27,241 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12. Second operand 7 states. Result 37 states and 47 transitions. Complement of second has 5 states. [2020-11-28 03:04:27,246 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 [2020-11-28 03:04:27,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-28 03:04:27,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2020-11-28 03:04:27,246 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 5 letters. Loop has 10 letters. [2020-11-28 03:04:27,246 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:27,247 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:04:27,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:27,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:27,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:04:27,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:27,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:27,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:04:27,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:27,352 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:27,352 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2020-11-28 03:04:27,352 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12 Second operand 7 states. [2020-11-28 03:04:27,361 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12. Second operand 7 states. Result 46 states and 60 transitions. Complement of second has 4 states. [2020-11-28 03:04:27,362 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 [2020-11-28 03:04:27,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-28 03:04:27,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2020-11-28 03:04:27,363 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 10 letters. [2020-11-28 03:04:27,363 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:27,363 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:04:27,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:27,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:27,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:04:27,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:27,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:27,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:04:27,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:27,462 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:27,463 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 5 loop predicates [2020-11-28 03:04:27,463 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12 Second operand 7 states. [2020-11-28 03:04:27,496 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12. Second operand 7 states. Result 63 states and 75 transitions. Complement of second has 8 states. [2020-11-28 03:04:27,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-11-28 03:04:27,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-28 03:04:27,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2020-11-28 03:04:27,497 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 5 letters. Loop has 10 letters. [2020-11-28 03:04:27,497 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:27,498 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:04:27,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:27,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:27,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:04:27,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:27,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:04:27,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:27,652 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:27,652 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemin loopwithout honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2020-11-28 03:04:27,653 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 33 states and 41 transitions. cyclomatic complexity: 12 Second operand 7 states. [2020-11-28 03:04:27,699 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:27,700 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:27,700 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:27,700 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:27,703 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:27,740 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:27,741 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:27,741 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:27,742 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:27,742 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:27,742 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:27,743 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:27,743 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:27,764 INFO L108 BuchiDifferenceFKV]: Finished buchiDifferenceFKV. First operand 33 states and 41 transitions. cyclomatic complexity: 12 Second operand 7 states. Result 404 states and 547 transitions. Complement of second has 85 states 12 powerset states73 rank states. The highest rank that occured is 7 [2020-11-28 03:04:27,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2020-11-28 03:04:27,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-28 03:04:27,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 29 transitions. [2020-11-28 03:04:27,765 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 29 transitions. Stem has 5 letters. Loop has 10 letters. [2020-11-28 03:04:27,767 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:27,767 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 29 transitions. Stem has 15 letters. Loop has 10 letters. [2020-11-28 03:04:27,768 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:27,768 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 29 transitions. Stem has 5 letters. Loop has 20 letters. [2020-11-28 03:04:27,770 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:27,770 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 404 states and 547 transitions. [2020-11-28 03:04:27,777 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 24 [2020-11-28 03:04:27,782 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 404 states to 145 states and 187 transitions. [2020-11-28 03:04:27,782 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-11-28 03:04:27,782 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-11-28 03:04:27,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 145 states and 187 transitions. [2020-11-28 03:04:27,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:04:27,783 INFO L691 BuchiCegarLoop]: Abstraction has 145 states and 187 transitions. [2020-11-28 03:04:27,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states and 187 transitions. [2020-11-28 03:04:27,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 96. [2020-11-28 03:04:27,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-11-28 03:04:27,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 129 transitions. [2020-11-28 03:04:27,797 INFO L714 BuchiCegarLoop]: Abstraction has 96 states and 129 transitions. [2020-11-28 03:04:27,798 INFO L594 BuchiCegarLoop]: Abstraction has 96 states and 129 transitions. [2020-11-28 03:04:27,798 INFO L427 BuchiCegarLoop]: ======== Iteration 11============ [2020-11-28 03:04:27,798 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 96 states and 129 transitions. [2020-11-28 03:04:27,799 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2020-11-28 03:04:27,801 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:04:27,801 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:04:27,802 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2020-11-28 03:04:27,802 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [7, 4, 3] [2020-11-28 03:04:27,802 INFO L794 eck$LassoCheckResult]: Stem: 2705#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 2708#L12-2 assume !!(main_~c~0 > 0); 2733#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 2725#L12-2 assume !!(main_~c~0 > 0); 2713#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 2701#L12-2 [2020-11-28 03:04:27,803 INFO L796 eck$LassoCheckResult]: Loop: 2701#L12-2 assume !!(main_~c~0 > 0); 2702#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 2762#L12-2 assume !!(main_~c~0 > 0); 2756#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 2754#L12-2 assume !!(main_~c~0 > 0); 2748#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 2747#L12-2 assume !!(main_~c~0 > 0); 2746#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 2738#L12-2 assume !!(main_~c~0 > 0); 2717#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 2730#L12-2 assume !!(main_~c~0 > 0); 2728#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 2727#L12-2 assume !!(main_~c~0 > 0); 2715#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 2701#L12-2 [2020-11-28 03:04:27,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:27,803 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 6 times [2020-11-28 03:04:27,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:27,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996124595] [2020-11-28 03:04:27,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:27,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:27,809 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:27,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:27,817 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:27,819 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:27,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:27,822 INFO L82 PathProgramCache]: Analyzing trace with hash 822111324, now seen corresponding path program 6 times [2020-11-28 03:04:27,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:27,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064316773] [2020-11-28 03:04:27,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:27,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:27,839 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:27,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:27,856 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:27,858 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:27,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:27,859 INFO L82 PathProgramCache]: Analyzing trace with hash 128316933, now seen corresponding path program 9 times [2020-11-28 03:04:27,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:27,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385584291] [2020-11-28 03:04:27,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:27,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:27,876 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:27,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:27,883 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:27,885 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:28,021 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2020-11-28 03:04:28,037 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:04:28,038 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:04:28,038 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:04:28,038 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:04:28,038 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:04:28,038 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:28,038 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:04:28,038 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:04:28,038 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration11_Loop [2020-11-28 03:04:28,038 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:04:28,038 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:04:28,039 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:28,048 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:28,053 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:28,055 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:28,099 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:04:28,100 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 67 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 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:28,102 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:28,102 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 68 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 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:28,126 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:04:28,126 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:04:28,656 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:04:28,658 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:04:28,658 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:04:28,658 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:04:28,658 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:04:28,658 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:04:28,658 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:28,659 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:04:28,659 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:04:28,659 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration11_Loop [2020-11-28 03:04:28,659 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:04:28,659 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:04:28,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:28,692 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:28,699 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:28,703 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:28,752 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:04:28,753 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 69 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:04:28,755 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 [2020-11-28 03:04:28,757 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:28,757 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:04:28,757 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:28,757 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:28,757 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:28,759 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:04:28,759 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 69 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:28,762 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:04:28,771 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:04:28,771 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 70 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:04:28,774 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:04:28,775 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:04:28,775 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:04:28,775 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 70 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:28,795 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:04:28,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:28,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:28,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:04:28,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:28,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:28,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 03:04:28,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:28,962 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:28,962 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 7 loop predicates [2020-11-28 03:04:28,962 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42 Second operand 9 states. [2020-11-28 03:04:28,973 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42. Second operand 9 states. Result 104 states and 145 transitions. Complement of second has 5 states. [2020-11-28 03:04:28,974 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 [2020-11-28 03:04:28,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-28 03:04:28,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2020-11-28 03:04:28,974 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 5 letters. Loop has 14 letters. [2020-11-28 03:04:28,975 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:28,975 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:04:28,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:28,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:28,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:04:28,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:29,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:29,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 03:04:29,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:29,104 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:29,104 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 7 loop predicates [2020-11-28 03:04:29,104 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42 Second operand 9 states. [2020-11-28 03:04:29,113 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42. Second operand 9 states. Result 104 states and 145 transitions. Complement of second has 5 states. [2020-11-28 03:04:29,114 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 [2020-11-28 03:04:29,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-28 03:04:29,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2020-11-28 03:04:29,114 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 5 letters. Loop has 14 letters. [2020-11-28 03:04:29,115 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:29,115 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:04:29,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:29,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:04:29,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:29,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:29,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 03:04:29,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:29,244 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:29,245 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 7 loop predicates [2020-11-28 03:04:29,245 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42 Second operand 9 states. [2020-11-28 03:04:29,265 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42. Second operand 9 states. Result 146 states and 191 transitions. Complement of second has 4 states. [2020-11-28 03:04:29,266 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 [2020-11-28 03:04:29,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-28 03:04:29,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2020-11-28 03:04:29,266 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 14 letters. [2020-11-28 03:04:29,267 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:29,267 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:04:29,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:29,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:04:29,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:29,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:29,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 03:04:29,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:29,418 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:29,419 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 7 loop predicates [2020-11-28 03:04:29,419 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42 Second operand 9 states. [2020-11-28 03:04:29,451 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42. Second operand 9 states. Result 172 states and 219 transitions. Complement of second has 8 states. [2020-11-28 03:04:29,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-11-28 03:04:29,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-28 03:04:29,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2020-11-28 03:04:29,452 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 5 letters. Loop has 14 letters. [2020-11-28 03:04:29,453 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:29,453 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:04:29,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:29,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:29,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:04:29,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:29,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:29,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 03:04:29,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:29,612 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:29,612 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemin loopwithout honda bouncer for stem and without honda bouncer for loop.1 stem predicates 7 loop predicates [2020-11-28 03:04:29,612 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 96 states and 129 transitions. cyclomatic complexity: 42 Second operand 9 states. [2020-11-28 03:04:29,681 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,681 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,681 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,682 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,682 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,682 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,683 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,683 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,685 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,685 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,687 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,687 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,750 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,751 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,751 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,751 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,752 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,752 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,752 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,752 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,753 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,753 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,753 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,753 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,754 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,754 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,754 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,754 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,757 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,757 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,762 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,762 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,765 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,765 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,765 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,766 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,817 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,817 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,817 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,817 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,818 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,818 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,818 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,818 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,819 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,819 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,819 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,819 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,819 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,820 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,820 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,820 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,820 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,821 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,821 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,826 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,826 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,827 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,827 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,827 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,827 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,832 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-28 03:04:29,874 INFO L108 BuchiDifferenceFKV]: Finished buchiDifferenceFKV. First operand 96 states and 129 transitions. cyclomatic complexity: 42 Second operand 9 states. Result 1787 states and 2714 transitions. Complement of second has 144 states 16 powerset states128 rank states. The highest rank that occured is 7 [2020-11-28 03:04:29,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 1 stem states 7 non-accepting loop states 1 accepting loop states [2020-11-28 03:04:29,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-28 03:04:29,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 39 transitions. [2020-11-28 03:04:29,876 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 39 transitions. Stem has 5 letters. Loop has 14 letters. [2020-11-28 03:04:29,877 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:29,877 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 39 transitions. Stem has 19 letters. Loop has 14 letters. [2020-11-28 03:04:29,879 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:29,879 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 39 transitions. Stem has 5 letters. Loop has 28 letters. [2020-11-28 03:04:29,884 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:29,884 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1787 states and 2714 transitions. [2020-11-28 03:04:29,905 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 33 [2020-11-28 03:04:29,910 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1787 states to 471 states and 636 transitions. [2020-11-28 03:04:29,910 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-11-28 03:04:29,910 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-11-28 03:04:29,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 471 states and 636 transitions. [2020-11-28 03:04:29,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:04:29,912 INFO L691 BuchiCegarLoop]: Abstraction has 471 states and 636 transitions. [2020-11-28 03:04:29,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states and 636 transitions. [2020-11-28 03:04:29,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 260. [2020-11-28 03:04:29,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-11-28 03:04:29,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 376 transitions. [2020-11-28 03:04:29,957 INFO L714 BuchiCegarLoop]: Abstraction has 260 states and 376 transitions. [2020-11-28 03:04:29,957 INFO L594 BuchiCegarLoop]: Abstraction has 260 states and 376 transitions. [2020-11-28 03:04:29,957 INFO L427 BuchiCegarLoop]: ======== Iteration 12============ [2020-11-28 03:04:29,958 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 260 states and 376 transitions. [2020-11-28 03:04:29,959 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2020-11-28 03:04:29,960 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:04:29,960 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:04:29,960 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2020-11-28 03:04:29,961 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [9, 5, 4] [2020-11-28 03:04:29,961 INFO L794 eck$LassoCheckResult]: Stem: 5618#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 5623#L12-2 assume !!(main_~c~0 > 0); 5681#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 5633#L12-2 assume !!(main_~c~0 > 0); 5630#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 5614#L12-2 [2020-11-28 03:04:29,962 INFO L796 eck$LassoCheckResult]: Loop: 5614#L12-2 assume !!(main_~c~0 > 0); 5615#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 5831#L12-2 assume !!(main_~c~0 > 0); 5761#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 5759#L12-2 assume !!(main_~c~0 > 0); 5757#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 5755#L12-2 assume !!(main_~c~0 > 0); 5751#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 5752#L12-2 assume !!(main_~c~0 > 0); 5734#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 5735#L12-2 assume !!(main_~c~0 > 0); 5731#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 5732#L12-2 assume !!(main_~c~0 > 0); 5635#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 5657#L12-2 assume !!(main_~c~0 > 0); 5636#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 5634#L12-2 assume !!(main_~c~0 > 0); 5632#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 5614#L12-2 [2020-11-28 03:04:29,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:29,962 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 7 times [2020-11-28 03:04:29,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:29,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111586720] [2020-11-28 03:04:29,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:29,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:29,977 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:29,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:29,980 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:29,981 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:29,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:29,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1476420572, now seen corresponding path program 7 times [2020-11-28 03:04:29,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:29,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937341920] [2020-11-28 03:04:29,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:29,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:29,991 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:30,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:30,003 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:30,005 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:30,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:30,006 INFO L82 PathProgramCache]: Analyzing trace with hash 939927885, now seen corresponding path program 10 times [2020-11-28 03:04:30,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:30,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374095119] [2020-11-28 03:04:30,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:30,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:30,017 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:30,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:30,027 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:30,037 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:30,197 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 67 [2020-11-28 03:04:30,217 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:04:30,217 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:04:30,217 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:04:30,217 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:04:30,217 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:04:30,217 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:30,218 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:04:30,218 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:04:30,218 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration12_Loop [2020-11-28 03:04:30,218 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:04:30,218 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:04:30,218 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:30,246 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:30,281 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:30,285 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:30,333 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:04:30,333 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 71 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 71 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:30,335 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:30,335 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 72 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 72 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:30,359 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:04:30,359 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:04:30,412 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:04:30,413 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:04:30,413 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:04:30,413 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:04:30,413 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:04:30,413 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:04:30,413 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:30,413 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:04:30,413 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:04:30,413 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration12_Loop [2020-11-28 03:04:30,414 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:04:30,414 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:04:30,414 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:30,419 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:30,423 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:30,426 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:30,477 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:04:30,478 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 73 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 73 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:30,480 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 [2020-11-28 03:04:30,481 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:30,481 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:04:30,481 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:30,481 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:30,481 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:30,482 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:04:30,482 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:04:30,483 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:04:30,486 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:04:30,486 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5ef30e1-13af-40a4-a14a-7251fe6fbf19/bin/uautomizer/z3 Starting monitored process 74 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 74 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:30,488 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:04:30,488 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:04:30,488 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:04:30,488 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~c~0) = 1*ULTIMATE.start_main_~c~0 Supporting invariants [] [2020-11-28 03:04:30,508 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:04:30,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:30,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:30,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:04:30,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:30,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:30,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-28 03:04:30,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:30,598 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 45 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-28 03:04:30,598 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 6 loop predicates [2020-11-28 03:04:30,599 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137 Second operand 8 states. [2020-11-28 03:04:30,618 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137. Second operand 8 states. Result 276 states and 420 transitions. Complement of second has 5 states. [2020-11-28 03:04:30,619 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 [2020-11-28 03:04:30,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-28 03:04:30,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2020-11-28 03:04:30,619 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 5 letters. Loop has 18 letters. [2020-11-28 03:04:30,619 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:30,619 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:04:30,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:30,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:30,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:04:30,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:30,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:30,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-28 03:04:30,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:30,723 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 45 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-28 03:04:30,725 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 6 loop predicates [2020-11-28 03:04:30,725 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137 Second operand 8 states. [2020-11-28 03:04:30,746 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137. Second operand 8 states. Result 276 states and 420 transitions. Complement of second has 5 states. [2020-11-28 03:04:30,748 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 [2020-11-28 03:04:30,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-28 03:04:30,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2020-11-28 03:04:30,748 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 5 letters. Loop has 18 letters. [2020-11-28 03:04:30,748 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:30,748 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:04:30,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:30,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:04:30,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:30,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-28 03:04:30,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:30,851 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 45 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-28 03:04:30,852 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 6 loop predicates [2020-11-28 03:04:30,852 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137 Second operand 8 states. [2020-11-28 03:04:30,907 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137. Second operand 8 states. Result 392 states and 547 transitions. Complement of second has 7 states. [2020-11-28 03:04:30,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-28 03:04:30,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-28 03:04:30,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2020-11-28 03:04:30,908 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 18 letters. [2020-11-28 03:04:30,908 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:30,908 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:04:30,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:30,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:30,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:04:30,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:30,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:30,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-28 03:04:30,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:31,091 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 45 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-28 03:04:31,093 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 6 loop predicates [2020-11-28 03:04:31,093 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137 Second operand 8 states. [2020-11-28 03:04:31,162 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137. Second operand 8 states. Result 511 states and 724 transitions. Complement of second has 12 states. [2020-11-28 03:04:31,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2020-11-28 03:04:31,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-28 03:04:31,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 13 transitions. [2020-11-28 03:04:31,164 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 5 letters. Loop has 18 letters. [2020-11-28 03:04:31,164 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:31,164 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 23 letters. Loop has 18 letters. [2020-11-28 03:04:31,165 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:31,165 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 5 letters. Loop has 36 letters. [2020-11-28 03:04:31,166 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:31,167 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 511 states and 724 transitions. [2020-11-28 03:04:31,171 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:04:31,172 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 511 states to 0 states and 0 transitions. [2020-11-28 03:04:31,173 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-28 03:04:31,173 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-28 03:04:31,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-28 03:04:31,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:04:31,173 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:04:31,173 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:04:31,173 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:04:31,174 INFO L427 BuchiCegarLoop]: ======== Iteration 13============ [2020-11-28 03:04:31,174 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:04:31,174 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:04:31,174 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-28 03:04:31,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 03:04:31 BoogieIcfgContainer [2020-11-28 03:04:31,182 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 03:04:31,182 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:04:31,183 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:04:31,183 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:04:31,183 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:04:19" (3/4) ... [2020-11-28 03:04:31,186 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:04:31,186 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:04:31,187 INFO L168 Benchmark]: Toolchain (without parser) took 12552.30 ms. Allocated memory was 92.3 MB in the beginning and 195.0 MB in the end (delta: 102.8 MB). Free memory was 61.3 MB in the beginning and 149.6 MB in the end (delta: -88.3 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:31,188 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 92.3 MB. Free memory is still 51.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:04:31,188 INFO L168 Benchmark]: CACSL2BoogieTranslator took 221.63 ms. Allocated memory is still 92.3 MB. Free memory was 61.1 MB in the beginning and 71.7 MB in the end (delta: -10.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:31,189 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.96 ms. Allocated memory is still 92.3 MB. Free memory was 71.7 MB in the beginning and 70.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:04:31,192 INFO L168 Benchmark]: Boogie Preprocessor took 17.69 ms. Allocated memory is still 92.3 MB. Free memory was 70.1 MB in the beginning and 69.6 MB in the end (delta: 550.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:04:31,192 INFO L168 Benchmark]: RCFGBuilder took 218.76 ms. Allocated memory is still 92.3 MB. Free memory was 69.2 MB in the beginning and 61.7 MB in the end (delta: 7.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:31,193 INFO L168 Benchmark]: BuchiAutomizer took 12049.45 ms. Allocated memory was 92.3 MB in the beginning and 195.0 MB in the end (delta: 102.8 MB). Free memory was 61.3 MB in the beginning and 150.6 MB in the end (delta: -89.3 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:31,193 INFO L168 Benchmark]: Witness Printer took 3.99 ms. Allocated memory is still 195.0 MB. Free memory was 150.6 MB in the beginning and 149.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:04:31,195 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 92.3 MB. Free memory is still 51.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 221.63 ms. Allocated memory is still 92.3 MB. Free memory was 61.1 MB in the beginning and 71.7 MB in the end (delta: -10.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.96 ms. Allocated memory is still 92.3 MB. Free memory was 71.7 MB in the beginning and 70.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.69 ms. Allocated memory is still 92.3 MB. Free memory was 70.1 MB in the beginning and 69.6 MB in the end (delta: 550.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 218.76 ms. Allocated memory is still 92.3 MB. Free memory was 69.2 MB in the beginning and 61.7 MB in the end (delta: 7.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 12049.45 ms. Allocated memory was 92.3 MB in the beginning and 195.0 MB in the end (delta: 102.8 MB). Free memory was 61.3 MB in the beginning and 150.6 MB in the end (delta: -89.3 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. * Witness Printer took 3.99 ms. Allocated memory is still 195.0 MB. Free memory was 150.6 MB in the beginning and 149.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 15 terminating modules (4 trivial, 4 deterministic, 7 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function c and consists of 3 locations. One deterministic module has affine ranking function -2 * x + 211 and consists of 3 locations. One deterministic module has affine ranking function c and consists of 5 locations. One nondeterministic module has affine ranking function x and consists of 3 locations. One nondeterministic module has affine ranking function -2 * x + 211 and consists of 3 locations. One nondeterministic module has affine ranking function -2 * x + 201 and consists of 5 locations. One nondeterministic module has affine ranking function x and consists of 5 locations. One nondeterministic module has affine ranking function x and consists of 7 locations. One nondeterministic module has affine ranking function x and consists of 9 locations. One nondeterministic module has affine ranking function c and consists of 6 locations. 4 modules have a trivial ranking function, the largest among these consists of 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 12.0s and 13 iterations. TraceHistogramMax:9. Analysis of lassos took 7.2s. Construction of modules took 0.5s. Büchi inclusion checks took 3.8s. Highest rank in rank-based complementation 7. Minimization of det autom 1. Minimization of nondet autom 14. Automata minimization 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 335 StatesRemovedByMinimization, 12 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 260 states and ocurred in iteration 11. Nontrivial modules had stage [4, 0, 3, 1, 3]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 105/148 HoareTripleCheckerStatistics: 159 SDtfs, 158 SDslu, 75 SDs, 0 SdLazy, 277 SolverSat, 85 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT8 conc0 concLT1 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax157 hnf94 lsp36 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq152 hnf94 smp98 dnf100 smp100 tf112 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 30ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 11 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 11 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...