./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_8cb4e277-e40b-4ad7-8072-6d0432923b7d/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/McCarthyIterative.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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 [2020-11-29 20:11:00,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:11:00,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:11:00,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:11:00,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:11:00,227 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:11:00,229 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:11:00,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:11:00,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:11:00,237 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:11:00,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:11:00,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:11:00,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:11:00,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:11:00,245 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:11:00,247 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:11:00,249 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:11:00,250 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:11:00,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:11:00,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:11:00,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:11:00,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:11:00,271 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:11:00,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:11:00,281 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:11:00,285 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:11:00,285 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:11:00,291 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:11:00,296 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:11:00,298 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:11:00,298 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:11:00,300 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:11:00,302 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:11:00,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:11:00,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:11:00,308 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:11:00,309 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:11:00,309 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:11:00,309 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:11:00,311 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:11:00,312 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:11:00,313 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-29 20:11:00,363 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:11:00,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:11:00,366 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:11:00,366 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:11:00,367 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:11:00,367 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 20:11:00,367 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 20:11:00,368 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 20:11:00,368 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 20:11:00,368 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 20:11:00,369 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 20:11:00,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:11:00,370 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 20:11:00,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:11:00,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:11:00,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 20:11:00,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 20:11:00,372 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 20:11:00,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:11:00,372 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 20:11:00,372 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:11:00,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 20:11:00,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:11:00,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:11:00,374 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 20:11:00,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:11:00,374 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:11:00,375 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:11:00,375 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 20:11:00,378 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 20:11:00,378 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_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5e4c58569d8caa47946d30f6cb501096837aef1 [2020-11-29 20:11:00,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:11:00,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:11:00,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:11:00,763 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:11:00,764 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:11:00,765 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/McCarthyIterative.c [2020-11-29 20:11:00,871 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/bin/uautomizer/data/e00245e93/3facccbec6c34e5c907356f37760cd3d/FLAG4e10742f3 [2020-11-29 20:11:01,489 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:11:01,490 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/sv-benchmarks/c/termination-restricted-15/McCarthyIterative.c [2020-11-29 20:11:01,498 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/bin/uautomizer/data/e00245e93/3facccbec6c34e5c907356f37760cd3d/FLAG4e10742f3 [2020-11-29 20:11:01,858 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/bin/uautomizer/data/e00245e93/3facccbec6c34e5c907356f37760cd3d [2020-11-29 20:11:01,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:11:01,863 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:11:01,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:11:01,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:11:01,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:11:01,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:11:01" (1/1) ... [2020-11-29 20:11:01,873 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39ea6d14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:11:01, skipping insertion in model container [2020-11-29 20:11:01,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:11:01" (1/1) ... [2020-11-29 20:11:01,883 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:11:01,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:11:02,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:11:02,076 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:11:02,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:11:02,134 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:11:02,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:11:02 WrapperNode [2020-11-29 20:11:02,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:11:02,136 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:11:02,137 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:11:02,137 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:11:02,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:11:02" (1/1) ... [2020-11-29 20:11:02,154 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:11:02" (1/1) ... [2020-11-29 20:11:02,174 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:11:02,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:11:02,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:11:02,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:11:02,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:11:02" (1/1) ... [2020-11-29 20:11:02,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:11:02" (1/1) ... [2020-11-29 20:11:02,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:11:02" (1/1) ... [2020-11-29 20:11:02,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:11:02" (1/1) ... [2020-11-29 20:11:02,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:11:02" (1/1) ... [2020-11-29 20:11:02,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:11:02" (1/1) ... [2020-11-29 20:11:02,196 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:11:02" (1/1) ... [2020-11-29 20:11:02,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:11:02,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:11:02,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:11:02,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:11:02,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:11:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:02,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:11:02,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:11:02,483 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:11:02,483 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-29 20:11:02,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:11:02 BoogieIcfgContainer [2020-11-29 20:11:02,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:11:02,486 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 20:11:02,487 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 20:11:02,490 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 20:11:02,491 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:11:02,492 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 08:11:01" (1/3) ... [2020-11-29 20:11:02,493 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1548e4af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 08:11:02, skipping insertion in model container [2020-11-29 20:11:02,494 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:11:02,494 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:11:02" (2/3) ... [2020-11-29 20:11:02,494 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1548e4af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 08:11:02, skipping insertion in model container [2020-11-29 20:11:02,495 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:11:02,495 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:11:02" (3/3) ... [2020-11-29 20:11:02,496 INFO L373 chiAutomizerObserver]: Analyzing ICFG McCarthyIterative.c [2020-11-29 20:11:02,553 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 20:11:02,553 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 20:11:02,553 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 20:11:02,553 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:11:02,554 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:11:02,554 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 20:11:02,554 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:11:02,554 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 20:11:02,569 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-11-29 20:11:02,590 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 20:11:02,590 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:11:02,591 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:11:02,598 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 20:11:02,598 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 20:11:02,598 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 20:11:02,598 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-11-29 20:11:02,599 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 20:11:02,600 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:11:02,600 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:11:02,600 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 20:11:02,600 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 20:11:02,609 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 [2020-11-29 20:11:02,609 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 [2020-11-29 20:11:02,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:02,617 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-29 20:11:02,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:02,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107086595] [2020-11-29 20:11:02,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:02,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:02,722 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:02,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:02,728 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:02,745 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:11:02,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:02,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2020-11-29 20:11:02,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:02,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733902633] [2020-11-29 20:11:02,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:02,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:02,763 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:02,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:02,769 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:02,771 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:11:02,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:02,773 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2020-11-29 20:11:02,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:02,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141496521] [2020-11-29 20:11:02,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:02,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:02,785 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:02,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:02,792 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:02,794 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:11:02,965 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-11-29 20:11:03,046 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:11:03,047 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:11:03,047 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:11:03,047 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:11:03,047 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 20:11:03,048 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:03,048 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:11:03,048 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:11:03,048 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration1_Loop [2020-11-29 20:11:03,048 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:11:03,049 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:11:03,080 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:03,097 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:03,104 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:03,139 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:03,316 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:11:03,316 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:03,323 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:11:03,323 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 20:11:03,332 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 20:11:03,333 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_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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 [2020-11-29 20:11:03,365 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:11:03,365 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 20:11:03,369 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 20:11:03,369 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_8cb4e277-e40b-4ad7-8072-6d0432923b7d/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:03,399 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:11:03,399 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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) [2020-11-29 20:11:03,474 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 20:11:03,474 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 [2020-11-29 20:11:03,513 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 20:11:03,515 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:11:03,515 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:11:03,515 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:11:03,515 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:11:03,516 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 20:11:03,516 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:03,516 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:11:03,516 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:11:03,516 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration1_Loop [2020-11-29 20:11:03,516 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:11:03,516 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:11:03,518 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:03,545 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:03,558 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:03,614 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:03,813 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:11:03,820 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:03,840 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:11:03,843 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:11:03,844 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:11:03,844 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:11:03,844 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:11:03,854 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:11:03,855 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:11:03,864 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:03,906 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:11:03,908 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:11:03,908 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:11:03,908 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:11:03,909 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:11:03,914 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:11:03,914 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:11:03,920 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:11:03,979 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:11:03,981 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:11:03,982 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:11:03,982 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:11:03,982 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:11:03,983 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:11:03,984 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:11:03,985 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:03,989 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 20:11:03,995 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 20:11:03,996 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_8cb4e277-e40b-4ad7-8072-6d0432923b7d/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:11:04,034 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 20:11:04,034 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 20:11:04,035 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 20:11:04,035 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:04,082 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 20:11:04,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:04,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:04,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:11:04,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:04,148 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 20:11:04,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:04,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:11:04,166 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-29 20:11:04,167 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2020-11-29 20:11:04,224 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. [2020-11-29 20:11:04,228 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 [2020-11-29 20:11:04,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 20:11:04,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-11-29 20:11:04,232 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 2 letters. [2020-11-29 20:11:04,233 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:04,234 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 2 letters. [2020-11-29 20:11:04,234 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:04,234 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 4 letters. [2020-11-29 20:11:04,235 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:04,236 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2020-11-29 20:11:04,239 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 20:11:04,243 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2020-11-29 20:11:04,245 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-11-29 20:11:04,245 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-11-29 20:11:04,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2020-11-29 20:11:04,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 20:11:04,246 INFO L691 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-11-29 20:11:04,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2020-11-29 20:11:04,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-11-29 20:11:04,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-29 20:11:04,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2020-11-29 20:11:04,278 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-11-29 20:11:04,278 INFO L594 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-11-29 20:11:04,278 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 20:11:04,279 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2020-11-29 20:11:04,279 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 20:11:04,280 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:11:04,280 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:11:04,280 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-29 20:11:04,280 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 20:11:04,281 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 [2020-11-29 20:11:04,281 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 [2020-11-29 20:11:04,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:04,282 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2020-11-29 20:11:04,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:04,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563304951] [2020-11-29 20:11:04,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:04,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:04,290 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:04,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:04,296 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:04,297 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:11:04,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:04,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2020-11-29 20:11:04,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:04,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893988190] [2020-11-29 20:11:04,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:04,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:04,305 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:04,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:04,309 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:04,311 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:11:04,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:04,312 INFO L82 PathProgramCache]: Analyzing trace with hash 29865320, now seen corresponding path program 1 times [2020-11-29 20:11:04,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:04,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029230493] [2020-11-29 20:11:04,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:04,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:04,322 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:04,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:04,330 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:04,332 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:11:04,374 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:11:04,375 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:11:04,375 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:11:04,375 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:11:04,375 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 20:11:04,375 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:04,375 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:11:04,375 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:11:04,376 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration2_Loop [2020-11-29 20:11:04,376 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:11:04,376 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:11:04,378 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:04,388 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:04,399 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:04,407 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:04,568 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:11:04,568 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:11:04,576 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:11:04,576 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:04,582 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 20:11:04,582 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_8cb4e277-e40b-4ad7-8072-6d0432923b7d/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:04,631 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:11:04,631 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:04,685 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 20:11:04,685 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 20:11:04,736 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 20:11:04,738 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:11:04,738 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:11:04,738 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:11:04,738 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:11:04,738 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 20:11:04,738 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:04,739 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:11:04,739 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:11:04,739 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration2_Loop [2020-11-29 20:11:04,739 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:11:04,739 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:11:04,741 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:04,747 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:04,761 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:04,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:04,882 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:11:04,882 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:11:04,886 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:11:04,889 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:11:04,889 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:11:04,889 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:11:04,889 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:11:04,894 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:11:04,894 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:04,900 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:04,939 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:11:04,941 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:11:04,941 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:11:04,941 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:11:04,942 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:11:04,942 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:11:04,947 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:11:04,947 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 20:11:04,950 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 20:11:04,957 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-29 20:11:04,957 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_8cb4e277-e40b-4ad7-8072-6d0432923b7d/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:04,965 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 20:11:04,965 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 20:11:04,965 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 20:11:04,965 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~c~0) = 1*ULTIMATE.start_main_~c~0 Supporting invariants [] [2020-11-29 20:11:05,007 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 20:11:05,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:05,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:05,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:11:05,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:05,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:05,062 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 20:11:05,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:05,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:11:05,084 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-29 20:11:05,084 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-11-29 20:11:05,109 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. [2020-11-29 20:11:05,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 20:11:05,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 20:11:05,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2020-11-29 20:11:05,112 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2020-11-29 20:11:05,112 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:05,112 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2020-11-29 20:11:05,112 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:05,113 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2020-11-29 20:11:05,113 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:05,113 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 16 transitions. [2020-11-29 20:11:05,114 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 20:11:05,115 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 16 transitions. [2020-11-29 20:11:05,115 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-11-29 20:11:05,116 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-11-29 20:11:05,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2020-11-29 20:11:05,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 20:11:05,116 INFO L691 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2020-11-29 20:11:05,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2020-11-29 20:11:05,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-29 20:11:05,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-29 20:11:05,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2020-11-29 20:11:05,119 INFO L714 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2020-11-29 20:11:05,119 INFO L594 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2020-11-29 20:11:05,119 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 20:11:05,119 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 16 transitions. [2020-11-29 20:11:05,120 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 20:11:05,120 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:11:05,120 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:11:05,121 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2020-11-29 20:11:05,121 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 20:11:05,124 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 [2020-11-29 20:11:05,125 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 [2020-11-29 20:11:05,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:05,125 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 2 times [2020-11-29 20:11:05,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:05,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840026204] [2020-11-29 20:11:05,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:05,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:05,152 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:05,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:05,158 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:05,160 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:11:05,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:05,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 3 times [2020-11-29 20:11:05,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:05,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036834813] [2020-11-29 20:11:05,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:05,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:05,167 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:05,171 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:05,172 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:11:05,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:05,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1364196307, now seen corresponding path program 2 times [2020-11-29 20:11:05,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:05,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738761487] [2020-11-29 20:11:05,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:05,183 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:05,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:05,192 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:05,195 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:11:05,222 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:11:05,222 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:11:05,222 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:11:05,222 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:11:05,222 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 20:11:05,222 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:05,223 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:11:05,223 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:11:05,223 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration3_Loop [2020-11-29 20:11:05,223 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:11:05,223 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:11:05,225 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:05,235 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:05,241 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:05,251 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:05,328 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:11:05,328 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:05,344 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:11:05,344 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:05,402 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 20:11:05,402 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 20:11:05,439 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 20:11:05,441 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:11:05,441 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:11:05,441 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:11:05,441 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:11:05,441 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 20:11:05,441 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:05,442 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:11:05,442 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:11:05,442 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration3_Loop [2020-11-29 20:11:05,442 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:11:05,442 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:11:05,444 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:05,457 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:05,464 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:05,472 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:05,622 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:11:05,622 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:11:05,631 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:11:05,633 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:11:05,634 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:11:05,634 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:11:05,634 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:11:05,634 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:11:05,636 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:11:05,636 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:05,641 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 20:11:05,647 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 20:11:05,647 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_8cb4e277-e40b-4ad7-8072-6d0432923b7d/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:11:05,655 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 20:11:05,656 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 20:11:05,656 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 20:11:05,656 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 [2020-11-29 20:11:05,700 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 20:11:05,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:05,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:05,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:11:05,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:05,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:05,837 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 20:11:05,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:05,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:11:05,839 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-29 20:11:05,839 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2020-11-29 20:11:05,853 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. [2020-11-29 20:11:05,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 20:11:05,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 20:11:05,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2020-11-29 20:11:05,856 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2020-11-29 20:11:05,856 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:05,856 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 20:11:05,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:05,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:11:05,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:05,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:05,910 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 20:11:05,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:05,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:11:05,912 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-29 20:11:05,912 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2020-11-29 20:11:05,927 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. [2020-11-29 20:11:05,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 20:11:05,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 20:11:05,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2020-11-29 20:11:05,929 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2020-11-29 20:11:05,930 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:05,930 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 20:11:05,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:05,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:05,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:11:05,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:05,984 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 20:11:05,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:05,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:11:05,985 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-29 20:11:05,985 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2020-11-29 20:11:06,003 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. [2020-11-29 20:11:06,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 20:11:06,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 20:11:06,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2020-11-29 20:11:06,006 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 2 letters. [2020-11-29 20:11:06,006 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:06,007 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 7 letters. Loop has 2 letters. [2020-11-29 20:11:06,007 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:06,007 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 4 letters. [2020-11-29 20:11:06,007 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:06,008 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 23 transitions. [2020-11-29 20:11:06,009 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-29 20:11:06,010 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 13 states and 19 transitions. [2020-11-29 20:11:06,010 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-11-29 20:11:06,010 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-11-29 20:11:06,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2020-11-29 20:11:06,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 20:11:06,010 INFO L691 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2020-11-29 20:11:06,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2020-11-29 20:11:06,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 5. [2020-11-29 20:11:06,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-29 20:11:06,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 7 transitions. [2020-11-29 20:11:06,012 INFO L714 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2020-11-29 20:11:06,012 INFO L594 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2020-11-29 20:11:06,012 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 20:11:06,012 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 7 transitions. [2020-11-29 20:11:06,013 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-29 20:11:06,013 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:11:06,013 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:11:06,013 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 20:11:06,013 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 20:11:06,013 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 [2020-11-29 20:11:06,016 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 [2020-11-29 20:11:06,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:06,017 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2020-11-29 20:11:06,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:06,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62136573] [2020-11-29 20:11:06,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:06,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:06,026 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:06,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:06,036 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:06,037 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:11:06,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:06,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1286, now seen corresponding path program 1 times [2020-11-29 20:11:06,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:06,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278698870] [2020-11-29 20:11:06,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:06,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:06,054 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:06,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:06,063 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:06,064 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:11:06,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:06,067 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 3 times [2020-11-29 20:11:06,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:06,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896796773] [2020-11-29 20:11:06,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:06,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:06,084 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:06,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:06,088 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:06,090 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:11:06,117 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:11:06,117 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:11:06,117 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:11:06,117 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:11:06,117 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 20:11:06,117 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:06,117 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:11:06,117 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:11:06,117 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration4_Loop [2020-11-29 20:11:06,118 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:11:06,118 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:11:06,119 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:06,125 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:06,134 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:06,139 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:06,222 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:11:06,222 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:06,240 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:11:06,240 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 20:11:06,245 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 20:11:06,246 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_8cb4e277-e40b-4ad7-8072-6d0432923b7d/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:11:06,302 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:11:06,302 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:11:06,358 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 20:11:06,359 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:06,371 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 20:11:06,371 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_8cb4e277-e40b-4ad7-8072-6d0432923b7d/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:06,418 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:11:06,418 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 20:11:06,422 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 20:11:06,422 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_8cb4e277-e40b-4ad7-8072-6d0432923b7d/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:11:06,475 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:11:06,475 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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) [2020-11-29 20:11:06,531 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 20:11:06,532 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 [2020-11-29 20:11:06,592 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 20:11:06,595 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:11:06,595 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:11:06,595 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:11:06,595 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:11:06,595 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 20:11:06,596 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:06,596 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:11:06,596 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:11:06,596 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration4_Loop [2020-11-29 20:11:06,596 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:11:06,596 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:11:06,598 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:06,612 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:06,617 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:06,624 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:06,713 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:11:06,713 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:06,719 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:11:06,720 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:11:06,721 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:11:06,721 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:11:06,721 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:11:06,721 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:11:06,722 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:11:06,722 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 20:11:06,730 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:11:06,781 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:11:06,783 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:11:06,783 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:11:06,784 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:11:06,784 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:11:06,790 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:11:06,791 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 [2020-11-29 20:11:06,796 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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) [2020-11-29 20:11:06,843 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:11:06,845 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:11:06,845 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:11:06,845 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:11:06,845 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:11:06,849 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:11:06,849 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:06,855 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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) [2020-11-29 20:11:06,903 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:11:06,905 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:11:06,906 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:11:06,906 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:11:06,906 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:11:06,906 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:11:06,909 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:11:06,909 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:06,913 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 20:11:06,918 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 20:11:06,919 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_8cb4e277-e40b-4ad7-8072-6d0432923b7d/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:11:06,922 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 20:11:06,923 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 20:11:06,923 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 20:11:06,923 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 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:06,968 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 20:11:06,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:07,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:07,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:11:07,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:07,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:07,011 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 20:11:07,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:07,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:11:07,013 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-29 20:11:07,013 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2020-11-29 20:11:07,035 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. [2020-11-29 20:11:07,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 20:11:07,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 20:11:07,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3 transitions. [2020-11-29 20:11:07,039 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 3 transitions. Stem has 1 letters. Loop has 2 letters. [2020-11-29 20:11:07,039 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:07,039 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 3 transitions. Stem has 3 letters. Loop has 2 letters. [2020-11-29 20:11:07,039 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:07,039 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 3 transitions. Stem has 1 letters. Loop has 4 letters. [2020-11-29 20:11:07,040 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:07,040 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 17 transitions. [2020-11-29 20:11:07,041 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-29 20:11:07,041 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 9 states and 13 transitions. [2020-11-29 20:11:07,042 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-11-29 20:11:07,042 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-11-29 20:11:07,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2020-11-29 20:11:07,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 20:11:07,042 INFO L691 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2020-11-29 20:11:07,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2020-11-29 20:11:07,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2020-11-29 20:11:07,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-29 20:11:07,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 12 transitions. [2020-11-29 20:11:07,044 INFO L714 BuchiCegarLoop]: Abstraction has 8 states and 12 transitions. [2020-11-29 20:11:07,044 INFO L594 BuchiCegarLoop]: Abstraction has 8 states and 12 transitions. [2020-11-29 20:11:07,044 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-29 20:11:07,044 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 12 transitions. [2020-11-29 20:11:07,045 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-29 20:11:07,045 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:11:07,045 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:11:07,051 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1] [2020-11-29 20:11:07,051 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 20:11:07,052 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 [2020-11-29 20:11:07,052 INFO L796 eck$LassoCheckResult]: Loop: 311#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 312#L12-2 assume !!(main_~c~0 > 0); 311#L12 [2020-11-29 20:11:07,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:07,053 INFO L82 PathProgramCache]: Analyzing trace with hash 963335, now seen corresponding path program 2 times [2020-11-29 20:11:07,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:07,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285484508] [2020-11-29 20:11:07,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:07,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:07,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:11:07,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285484508] [2020-11-29 20:11:07,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:11:07,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:11:07,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594438861] [2020-11-29 20:11:07,196 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 20:11:07,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:07,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 2 times [2020-11-29 20:11:07,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:07,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259164236] [2020-11-29 20:11:07,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:07,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:07,217 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:07,224 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:07,225 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:11:07,259 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:11:07,259 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:11:07,259 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:11:07,259 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:11:07,259 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 20:11:07,260 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:07,260 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:11:07,260 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:11:07,260 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration5_Loop [2020-11-29 20:11:07,260 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:11:07,260 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:11:07,262 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:07,273 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:07,283 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:07,289 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:07,370 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:11:07,370 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:11:07,375 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:11:07,375 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_8cb4e277-e40b-4ad7-8072-6d0432923b7d/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:11:07,428 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 20:11:07,428 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:07,496 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 20:11:07,496 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_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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 [2020-11-29 20:11:07,527 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:11:07,527 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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 [2020-11-29 20:11:07,558 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 20:11:07,558 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 20:11:07,590 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 20:11:07,592 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:11:07,592 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:11:07,592 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:11:07,592 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:11:07,592 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 20:11:07,592 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:07,592 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:11:07,593 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:11:07,593 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration5_Loop [2020-11-29 20:11:07,593 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:11:07,593 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:11:07,594 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:07,611 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:07,624 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:07,634 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:07,735 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:11:07,735 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/bin/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:11:07,742 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:11:07,744 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:11:07,745 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:11:07,745 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:11:07,745 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:11:07,745 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:11:07,747 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:11:07,747 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:07,750 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:11:07,798 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:11:07,801 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:11:07,801 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:11:07,801 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:11:07,801 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:11:07,804 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:11:07,805 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:07,811 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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) [2020-11-29 20:11:07,859 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:11:07,863 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:11:07,863 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:11:07,863 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:11:07,864 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:11:07,864 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:11:07,867 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:11:07,867 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 [2020-11-29 20:11:07,871 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 20:11:07,875 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 20:11:07,876 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_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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) [2020-11-29 20:11:07,883 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 20:11:07,883 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 20:11:07,883 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 20:11:07,883 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 [2020-11-29 20:11:07,929 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 20:11:07,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:07,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:07,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:11:07,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:07,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:07,973 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 20:11:07,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:08,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:11:08,043 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-29 20:11:08,044 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6 Second operand 3 states. [2020-11-29 20:11:08,055 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. [2020-11-29 20:11:08,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 20:11:08,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 20:11:08,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2020-11-29 20:11:08,059 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 4 letters. Loop has 2 letters. [2020-11-29 20:11:08,059 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:08,059 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 20:11:08,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:08,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:08,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:11:08,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:08,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:08,092 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 20:11:08,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:08,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:11:08,122 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-29 20:11:08,123 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6 Second operand 3 states. [2020-11-29 20:11:08,152 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. [2020-11-29 20:11:08,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 20:11:08,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 20:11:08,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2020-11-29 20:11:08,153 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2020-11-29 20:11:08,153 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:08,153 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 20:11:08,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:08,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:08,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:11:08,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:08,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:08,190 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 20:11:08,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:08,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:11:08,244 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-29 20:11:08,244 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6 Second operand 3 states. [2020-11-29 20:11:08,259 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. [2020-11-29 20:11:08,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 20:11:08,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 20:11:08,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2020-11-29 20:11:08,262 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2020-11-29 20:11:08,262 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:08,263 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2020-11-29 20:11:08,263 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:08,263 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 4 letters. [2020-11-29 20:11:08,264 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:08,264 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 20 transitions. [2020-11-29 20:11:08,265 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-29 20:11:08,270 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 12 states and 16 transitions. [2020-11-29 20:11:08,271 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-11-29 20:11:08,271 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2020-11-29 20:11:08,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 16 transitions. [2020-11-29 20:11:08,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 20:11:08,272 INFO L691 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2020-11-29 20:11:08,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 16 transitions. [2020-11-29 20:11:08,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 7. [2020-11-29 20:11:08,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-29 20:11:08,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2020-11-29 20:11:08,276 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-11-29 20:11:08,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:11:08,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:11:08,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:11:08,281 INFO L87 Difference]: Start difference. First operand 7 states and 10 transitions. Second operand 4 states. [2020-11-29 20:11:08,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:11:08,305 INFO L93 Difference]: Finished difference Result 10 states and 12 transitions. [2020-11-29 20:11:08,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:11:08,307 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2020-11-29 20:11:08,308 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-29 20:11:08,308 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 8 states and 10 transitions. [2020-11-29 20:11:08,308 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-11-29 20:11:08,308 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2020-11-29 20:11:08,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 10 transitions. [2020-11-29 20:11:08,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 20:11:08,309 INFO L691 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2020-11-29 20:11:08,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 10 transitions. [2020-11-29 20:11:08,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2020-11-29 20:11:08,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-29 20:11:08,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2020-11-29 20:11:08,310 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2020-11-29 20:11:08,310 INFO L594 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2020-11-29 20:11:08,310 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-29 20:11:08,310 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2020-11-29 20:11:08,311 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-29 20:11:08,311 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:11:08,311 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:11:08,311 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 1, 1, 1] [2020-11-29 20:11:08,311 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1] [2020-11-29 20:11:08,312 INFO L794 eck$LassoCheckResult]: Stem: 460#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 456#L12-2 assume !!(main_~c~0 > 0); 457#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 458#L12-2 assume !!(main_~c~0 > 0); 459#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 462#L12-2 assume !!(main_~c~0 > 0); 461#L12 [2020-11-29 20:11:08,312 INFO L796 eck$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 [2020-11-29 20:11:08,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:08,312 INFO L82 PathProgramCache]: Analyzing trace with hash 925824930, now seen corresponding path program 3 times [2020-11-29 20:11:08,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:08,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288293732] [2020-11-29 20:11:08,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:08,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:08,327 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:08,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:08,344 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:08,346 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:11:08,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:08,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1380409, now seen corresponding path program 1 times [2020-11-29 20:11:08,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:08,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49606774] [2020-11-29 20:11:08,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:08,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:08,359 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:08,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:08,372 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:08,374 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:11:08,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:08,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1848815782, now seen corresponding path program 4 times [2020-11-29 20:11:08,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:08,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416391824] [2020-11-29 20:11:08,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:08,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:08,389 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:08,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:08,399 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:08,404 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:11:08,518 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2020-11-29 20:11:08,534 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:11:08,534 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:11:08,534 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:11:08,534 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:11:08,534 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 20:11:08,534 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:08,534 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:11:08,534 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:11:08,534 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration6_Loop [2020-11-29 20:11:08,535 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:11:08,535 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:11:08,536 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:08,554 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:08,559 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:08,568 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:08,651 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:11:08,651 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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) [2020-11-29 20:11:08,659 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:11:08,659 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:08,664 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 20:11:08,664 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_8cb4e277-e40b-4ad7-8072-6d0432923b7d/bin/uautomizer/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:11:08,716 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:11:08,716 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:08,721 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 20:11:08,721 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_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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) [2020-11-29 20:11:08,768 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:11:08,768 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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 [2020-11-29 20:11:08,807 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 20:11:08,807 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 20:11:08,812 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 20:11:08,836 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:11:08,836 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:11:08,836 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:11:08,837 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:11:08,837 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 20:11:08,837 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:08,837 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:11:08,837 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:11:08,837 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration6_Loop [2020-11-29 20:11:08,837 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:11:08,837 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:11:08,838 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:08,862 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:08,867 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:08,876 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:08,964 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:11:08,965 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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) [2020-11-29 20:11:08,974 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:11:08,976 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:11:08,976 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:11:08,976 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:11:08,977 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:11:08,977 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:11:08,978 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:11:08,978 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:08,981 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 20:11:08,984 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 20:11:08,984 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_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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 [2020-11-29 20:11:08,987 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 20:11:08,987 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 20:11:08,987 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 20:11:08,987 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 201 Supporting invariants [] [2020-11-29 20:11:09,013 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 20:11:09,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:09,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:09,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:11:09,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:09,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 20:11:09,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:09,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:11:09,135 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 [2020-11-29 20:11:09,135 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. [2020-11-29 20:11:09,145 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. [2020-11-29 20:11:09,146 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 [2020-11-29 20:11:09,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 20:11:09,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2020-11-29 20:11:09,146 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 6 letters. Loop has 4 letters. [2020-11-29 20:11:09,147 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:09,147 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 20:11:09,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:09,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:09,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:11:09,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:09,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 20:11:09,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:09,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:11:09,241 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 [2020-11-29 20:11:09,242 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. [2020-11-29 20:11:09,266 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. [2020-11-29 20:11:09,266 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 [2020-11-29 20:11:09,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 20:11:09,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2020-11-29 20:11:09,267 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 6 letters. Loop has 4 letters. [2020-11-29 20:11:09,267 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:09,267 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 20:11:09,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:09,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:09,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:11:09,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:09,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:09,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 20:11:09,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:09,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:11:09,357 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 [2020-11-29 20:11:09,358 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. [2020-11-29 20:11:09,369 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. [2020-11-29 20:11:09,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 20:11:09,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 20:11:09,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2020-11-29 20:11:09,371 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2020-11-29 20:11:09,371 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:09,371 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 20:11:09,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:09,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:09,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:11:09,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:09,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:09,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 20:11:09,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:09,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:11:09,454 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 [2020-11-29 20:11:09,454 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. [2020-11-29 20:11:09,539 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. [2020-11-29 20:11:09,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 20:11:09,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 20:11:09,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2020-11-29 20:11:09,540 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 4 letters. [2020-11-29 20:11:09,541 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:09,541 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 20:11:09,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:09,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:09,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:11:09,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:09,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:09,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 20:11:09,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:09,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:11:09,640 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 [2020-11-29 20:11:09,641 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. [2020-11-29 20:11:09,733 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 [2020-11-29 20:11:09,738 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 [2020-11-29 20:11:09,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 20:11:09,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2020-11-29 20:11:09,739 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 6 letters. Loop has 4 letters. [2020-11-29 20:11:09,740 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:09,740 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 10 letters. Loop has 4 letters. [2020-11-29 20:11:09,741 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:09,742 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 6 letters. Loop has 8 letters. [2020-11-29 20:11:09,745 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:09,745 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 72 states and 96 transitions. [2020-11-29 20:11:09,749 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-11-29 20:11:09,750 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 72 states to 27 states and 38 transitions. [2020-11-29 20:11:09,750 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2 [2020-11-29 20:11:09,750 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2 [2020-11-29 20:11:09,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 38 transitions. [2020-11-29 20:11:09,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 20:11:09,751 INFO L691 BuchiCegarLoop]: Abstraction has 27 states and 38 transitions. [2020-11-29 20:11:09,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 38 transitions. [2020-11-29 20:11:09,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 15. [2020-11-29 20:11:09,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-29 20:11:09,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 22 transitions. [2020-11-29 20:11:09,755 INFO L714 BuchiCegarLoop]: Abstraction has 15 states and 22 transitions. [2020-11-29 20:11:09,755 INFO L594 BuchiCegarLoop]: Abstraction has 15 states and 22 transitions. [2020-11-29 20:11:09,755 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-11-29 20:11:09,755 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 22 transitions. [2020-11-29 20:11:09,756 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-11-29 20:11:09,756 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:11:09,756 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:11:09,757 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [4, 2, 1, 1] [2020-11-29 20:11:09,757 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 1] [2020-11-29 20:11:09,757 INFO L794 eck$LassoCheckResult]: Stem: 822#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 823#L12-2 assume !!(main_~c~0 > 0); 826#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 825#L12-2 assume !!(main_~c~0 > 0); 830#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 829#L12-2 assume !!(main_~c~0 > 0); 828#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 827#L12-2 assume !!(main_~c~0 > 0); 824#L12 [2020-11-29 20:11:09,757 INFO L796 eck$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 [2020-11-29 20:11:09,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:09,758 INFO L82 PathProgramCache]: Analyzing trace with hash 659527871, now seen corresponding path program 5 times [2020-11-29 20:11:09,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:09,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013794752] [2020-11-29 20:11:09,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:09,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:09,794 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 20:11:09,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013794752] [2020-11-29 20:11:09,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912407419] [2020-11-29 20:11:09,795 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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 [2020-11-29 20:11:09,823 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-11-29 20:11:09,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:11:09,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 20:11:09,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:09,835 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 20:11:09,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:11:09,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-11-29 20:11:09,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586404915] [2020-11-29 20:11:09,836 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 20:11:09,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:09,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1326573462, now seen corresponding path program 2 times [2020-11-29 20:11:09,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:09,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755696024] [2020-11-29 20:11:09,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:09,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:09,842 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:09,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:09,847 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:09,848 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:11:09,940 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:11:09,940 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:11:09,940 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:11:09,940 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:11:09,940 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 20:11:09,940 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:09,940 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:11:09,941 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:11:09,941 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration7_Loop [2020-11-29 20:11:09,941 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:11:09,941 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:11:09,942 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:09,953 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:09,958 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:09,967 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:10,048 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:11:10,048 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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) [2020-11-29 20:11:10,057 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:11:10,057 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:10,062 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 20:11:10,062 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_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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 [2020-11-29 20:11:10,094 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:11:10,094 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 20:11:10,097 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 20:11:10,097 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_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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 [2020-11-29 20:11:10,124 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:11:10,124 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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 [2020-11-29 20:11:10,155 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 20:11:10,156 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 20:11:10,227 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 20:11:10,229 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:11:10,229 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:11:10,229 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:11:10,229 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:11:10,229 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 20:11:10,229 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:10,229 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:11:10,229 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:11:10,229 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration7_Loop [2020-11-29 20:11:10,230 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:11:10,230 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:11:10,230 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:10,234 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:10,237 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:10,244 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:10,347 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:11:10,347 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/bin/uautomizer/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:11:10,359 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:11:10,361 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:11:10,361 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:11:10,361 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:11:10,361 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:11:10,364 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:11:10,364 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:10,371 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/bin/uautomizer/z3 Starting monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:11:10,420 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:11:10,422 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:11:10,422 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:11:10,422 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:11:10,422 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:11:10,425 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:11:10,425 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:10,429 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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) [2020-11-29 20:11:10,476 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:11:10,478 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:11:10,478 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:11:10,479 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:11:10,479 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:11:10,479 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:11:10,480 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:11:10,480 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 [2020-11-29 20:11:10,483 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 20:11:10,487 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 20:11:10,487 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_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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) [2020-11-29 20:11:10,495 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 20:11:10,495 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 20:11:10,495 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 20:11:10,496 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 [2020-11-29 20:11:10,541 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 20:11:10,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:10,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:10,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:11:10,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:10,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:10,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 20:11:10,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:10,687 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 20:11:10,688 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 [2020-11-29 20:11:10,688 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 22 transitions. cyclomatic complexity: 9 Second operand 5 states. [2020-11-29 20:11:10,741 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. [2020-11-29 20:11:10,743 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 [2020-11-29 20:11:10,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-29 20:11:10,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 10 transitions. [2020-11-29 20:11:10,743 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 8 letters. Loop has 6 letters. [2020-11-29 20:11:10,744 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:10,744 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 14 letters. Loop has 6 letters. [2020-11-29 20:11:10,744 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:10,744 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 8 letters. Loop has 12 letters. [2020-11-29 20:11:10,744 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:10,745 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 61 states and 87 transitions. [2020-11-29 20:11:10,747 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-11-29 20:11:10,748 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 61 states to 52 states and 75 transitions. [2020-11-29 20:11:10,748 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-11-29 20:11:10,749 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2020-11-29 20:11:10,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 75 transitions. [2020-11-29 20:11:10,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 20:11:10,749 INFO L691 BuchiCegarLoop]: Abstraction has 52 states and 75 transitions. [2020-11-29 20:11:10,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 75 transitions. [2020-11-29 20:11:10,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2020-11-29 20:11:10,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-29 20:11:10,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 67 transitions. [2020-11-29 20:11:10,755 INFO L714 BuchiCegarLoop]: Abstraction has 46 states and 67 transitions. [2020-11-29 20:11:10,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:11:10,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:11:10,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:11:10,757 INFO L87 Difference]: Start difference. First operand 46 states and 67 transitions. Second operand 5 states. [2020-11-29 20:11:10,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:11:10,779 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2020-11-29 20:11:10,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:11:10,780 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 51 transitions. [2020-11-29 20:11:10,781 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-11-29 20:11:10,782 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 27 states and 36 transitions. [2020-11-29 20:11:10,782 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2 [2020-11-29 20:11:10,782 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2 [2020-11-29 20:11:10,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 36 transitions. [2020-11-29 20:11:10,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 20:11:10,783 INFO L691 BuchiCegarLoop]: Abstraction has 27 states and 36 transitions. [2020-11-29 20:11:10,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 36 transitions. [2020-11-29 20:11:10,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2020-11-29 20:11:10,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-29 20:11:10,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 30 transitions. [2020-11-29 20:11:10,786 INFO L714 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2020-11-29 20:11:10,786 INFO L594 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2020-11-29 20:11:10,786 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-11-29 20:11:10,786 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 30 transitions. [2020-11-29 20:11:10,787 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-11-29 20:11:10,787 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:11:10,787 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:11:10,787 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [5, 2, 2, 1] [2020-11-29 20:11:10,788 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 1] [2020-11-29 20:11:10,788 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 [2020-11-29 20:11:10,788 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 [2020-11-29 20:11:10,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:10,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1791617062, now seen corresponding path program 6 times [2020-11-29 20:11:10,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:10,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857899855] [2020-11-29 20:11:10,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:10,797 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:10,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:10,803 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:10,804 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:11:10,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:10,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1326573462, now seen corresponding path program 3 times [2020-11-29 20:11:10,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:10,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258470140] [2020-11-29 20:11:10,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:10,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:10,811 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:10,815 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:10,816 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:11:10,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:10,817 INFO L82 PathProgramCache]: Analyzing trace with hash 709032111, now seen corresponding path program 7 times [2020-11-29 20:11:10,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:10,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639667247] [2020-11-29 20:11:10,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:10,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:10,903 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 41 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 20:11:10,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639667247] [2020-11-29 20:11:10,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638812503] [2020-11-29 20:11:10,904 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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 [2020-11-29 20:11:10,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:10,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 20:11:10,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:10,951 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 41 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 20:11:10,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:11:10,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-11-29 20:11:10,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292970272] [2020-11-29 20:11:11,031 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:11:11,031 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:11:11,031 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:11:11,031 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:11:11,032 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 20:11:11,032 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:11,032 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:11:11,032 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:11:11,032 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration8_Loop [2020-11-29 20:11:11,032 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:11:11,032 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:11:11,034 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:11,041 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:11,051 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:11,060 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:11,140 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:11:11,141 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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) [2020-11-29 20:11:11,144 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:11:11,144 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:11,150 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 20:11:11,150 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_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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 [2020-11-29 20:11:11,203 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:11:11,203 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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) [2020-11-29 20:11:11,259 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 20:11:11,259 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:11,266 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 20:11:11,302 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:11:11,303 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:11:11,303 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:11:11,303 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:11:11,303 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 20:11:11,303 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:11,303 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:11:11,303 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:11:11,303 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration8_Loop [2020-11-29 20:11:11,303 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:11:11,303 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:11:11,304 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:11,308 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:11,317 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:11,329 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:11,390 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:11:11,391 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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 [2020-11-29 20:11:11,400 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:11:11,401 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:11:11,401 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:11:11,402 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:11:11,402 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:11:11,404 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:11:11,404 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:11:11,414 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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 [2020-11-29 20:11:11,460 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:11:11,462 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:11:11,462 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:11:11,462 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:11:11,462 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:11:11,462 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:11:11,463 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:11:11,463 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 20:11:11,465 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 20:11:11,468 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-29 20:11:11,468 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_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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 [2020-11-29 20:11:11,471 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 20:11:11,471 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 20:11:11,471 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 20:11:11,471 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-11-29 20:11:11,497 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 20:11:11,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:11,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:11,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:11:11,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:11,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 20:11:11,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:11,645 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:11:11,646 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 [2020-11-29 20:11:11,646 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand 5 states. [2020-11-29 20:11:11,679 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. [2020-11-29 20:11:11,686 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 [2020-11-29 20:11:11,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-29 20:11:11,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2020-11-29 20:11:11,686 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 10 letters. Loop has 6 letters. [2020-11-29 20:11:11,687 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:11,687 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 20:11:11,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:11,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:11,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:11:11,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:11,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:11,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 20:11:11,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:11,765 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:11:11,766 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 [2020-11-29 20:11:11,766 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand 5 states. [2020-11-29 20:11:11,799 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. [2020-11-29 20:11:11,801 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 [2020-11-29 20:11:11,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-29 20:11:11,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2020-11-29 20:11:11,801 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 10 letters. Loop has 6 letters. [2020-11-29 20:11:11,802 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:11,802 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 20:11:11,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:11,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:11,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:11:11,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:11,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:11,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 20:11:11,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:11,886 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:11:11,887 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 [2020-11-29 20:11:11,887 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand 5 states. [2020-11-29 20:11:11,932 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. [2020-11-29 20:11:11,934 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 [2020-11-29 20:11:11,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-29 20:11:11,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2020-11-29 20:11:11,935 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 10 letters. Loop has 6 letters. [2020-11-29 20:11:11,936 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:11,936 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 16 letters. Loop has 6 letters. [2020-11-29 20:11:11,936 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:11,936 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 10 letters. Loop has 12 letters. [2020-11-29 20:11:11,937 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:11,937 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 75 states and 99 transitions. [2020-11-29 20:11:11,940 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 22 [2020-11-29 20:11:11,941 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 75 states to 52 states and 71 transitions. [2020-11-29 20:11:11,941 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-11-29 20:11:11,941 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2020-11-29 20:11:11,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 71 transitions. [2020-11-29 20:11:11,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 20:11:11,942 INFO L691 BuchiCegarLoop]: Abstraction has 52 states and 71 transitions. [2020-11-29 20:11:11,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 71 transitions. [2020-11-29 20:11:11,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2020-11-29 20:11:11,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-29 20:11:11,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 58 transitions. [2020-11-29 20:11:11,947 INFO L714 BuchiCegarLoop]: Abstraction has 40 states and 58 transitions. [2020-11-29 20:11:11,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:11:11,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 20:11:11,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:11:11,949 INFO L87 Difference]: Start difference. First operand 40 states and 58 transitions. Second operand 7 states. [2020-11-29 20:11:11,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:11:11,980 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2020-11-29 20:11:11,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 20:11:11,981 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 85 transitions. [2020-11-29 20:11:11,983 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 18 [2020-11-29 20:11:11,984 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 51 states and 67 transitions. [2020-11-29 20:11:11,984 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2 [2020-11-29 20:11:11,984 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2020-11-29 20:11:11,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 67 transitions. [2020-11-29 20:11:11,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 20:11:11,984 INFO L691 BuchiCegarLoop]: Abstraction has 51 states and 67 transitions. [2020-11-29 20:11:11,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states and 67 transitions. [2020-11-29 20:11:11,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 33. [2020-11-29 20:11:11,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-29 20:11:11,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2020-11-29 20:11:11,989 INFO L714 BuchiCegarLoop]: Abstraction has 33 states and 43 transitions. [2020-11-29 20:11:11,989 INFO L594 BuchiCegarLoop]: Abstraction has 33 states and 43 transitions. [2020-11-29 20:11:11,990 INFO L427 BuchiCegarLoop]: ======== Iteration 9============ [2020-11-29 20:11:11,990 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 43 transitions. [2020-11-29 20:11:11,991 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2020-11-29 20:11:11,991 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:11:11,991 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:11:11,991 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2020-11-29 20:11:11,992 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [4, 2, 2] [2020-11-29 20:11:11,992 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 [2020-11-29 20:11:11,992 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 [2020-11-29 20:11:11,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:11,993 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 4 times [2020-11-29 20:11:11,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:11,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477871503] [2020-11-29 20:11:11,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:11,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:11,999 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:12,002 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:12,004 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:11:12,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:12,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1687002897, now seen corresponding path program 4 times [2020-11-29 20:11:12,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:12,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455934690] [2020-11-29 20:11:12,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:12,039 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 20:11:12,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455934690] [2020-11-29 20:11:12,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:11:12,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:11:12,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191589546] [2020-11-29 20:11:12,040 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 20:11:12,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:11:12,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:11:12,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:11:12,041 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. cyclomatic complexity: 14 Second operand 4 states. [2020-11-29 20:11:12,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:11:12,074 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2020-11-29 20:11:12,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:11:12,078 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 63 transitions. [2020-11-29 20:11:12,079 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2020-11-29 20:11:12,080 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 39 states and 47 transitions. [2020-11-29 20:11:12,080 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-11-29 20:11:12,080 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-11-29 20:11:12,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 47 transitions. [2020-11-29 20:11:12,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 20:11:12,080 INFO L691 BuchiCegarLoop]: Abstraction has 39 states and 47 transitions. [2020-11-29 20:11:12,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 47 transitions. [2020-11-29 20:11:12,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2020-11-29 20:11:12,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-29 20:11:12,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2020-11-29 20:11:12,084 INFO L714 BuchiCegarLoop]: Abstraction has 33 states and 41 transitions. [2020-11-29 20:11:12,084 INFO L594 BuchiCegarLoop]: Abstraction has 33 states and 41 transitions. [2020-11-29 20:11:12,084 INFO L427 BuchiCegarLoop]: ======== Iteration 10============ [2020-11-29 20:11:12,084 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 41 transitions. [2020-11-29 20:11:12,084 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2020-11-29 20:11:12,084 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:11:12,084 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:11:12,085 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2020-11-29 20:11:12,085 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [5, 3, 2] [2020-11-29 20:11:12,085 INFO L794 eck$LassoCheckResult]: Stem: 1712#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 1714#L12-2 assume !!(main_~c~0 > 0); 1728#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1723#L12-2 assume !!(main_~c~0 > 0); 1719#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1708#L12-2 [2020-11-29 20:11:12,085 INFO L796 eck$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 [2020-11-29 20:11:12,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:12,085 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 5 times [2020-11-29 20:11:12,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:12,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32567646] [2020-11-29 20:11:12,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:12,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:12,094 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:12,097 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:12,098 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:11:12,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:12,098 INFO L82 PathProgramCache]: Analyzing trace with hash 2007111828, now seen corresponding path program 5 times [2020-11-29 20:11:12,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:12,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64843584] [2020-11-29 20:11:12,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:12,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:12,105 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:12,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:12,110 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:12,112 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:11:12,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:12,113 INFO L82 PathProgramCache]: Analyzing trace with hash -254222659, now seen corresponding path program 8 times [2020-11-29 20:11:12,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:12,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180690522] [2020-11-29 20:11:12,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:12,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:12,121 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:12,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:12,129 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:12,131 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:11:12,242 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-11-29 20:11:12,260 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:11:12,260 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:11:12,260 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:11:12,260 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:11:12,260 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 20:11:12,261 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:12,261 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:11:12,261 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:11:12,261 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration10_Loop [2020-11-29 20:11:12,261 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:11:12,261 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:11:12,262 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:12,266 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:12,274 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:12,292 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:12,360 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:11:12,360 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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 [2020-11-29 20:11:12,363 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:11:12,363 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 20:11:12,365 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 20:11:12,366 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_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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 [2020-11-29 20:11:12,392 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:11:12,392 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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 [2020-11-29 20:11:12,425 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 20:11:12,425 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 20:11:12,456 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 20:11:12,457 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:11:12,458 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:11:12,458 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:11:12,458 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:11:12,458 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 20:11:12,458 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:12,458 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:11:12,458 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:11:12,458 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration10_Loop [2020-11-29 20:11:12,458 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:11:12,458 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:11:12,459 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:12,465 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:12,474 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:12,479 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:12,547 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:11:12,547 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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 [2020-11-29 20:11:12,551 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:11:12,553 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:11:12,553 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:11:12,553 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:11:12,553 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:11:12,555 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:11:12,555 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:11:12,559 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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) Waiting until toolchain timeout for monitored process 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:12,612 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:11:12,613 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:11:12,613 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:11:12,614 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:11:12,614 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:11:12,614 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:11:12,615 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:11:12,615 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 20:11:12,621 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 20:11:12,624 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 20:11:12,624 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_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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) [2020-11-29 20:11:12,627 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 20:11:12,627 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. Waiting until toolchain timeout for monitored process 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:12,627 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 20:11:12,627 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-11-29 20:11:12,653 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 20:11:12,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:12,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:12,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:11:12,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:12,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:12,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 20:11:12,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:12,780 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:11:12,780 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 [2020-11-29 20:11:12,780 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12 Second operand 7 states. [2020-11-29 20:11:12,796 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. [2020-11-29 20:11:12,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 20:11:12,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-29 20:11:12,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2020-11-29 20:11:12,798 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 5 letters. Loop has 10 letters. [2020-11-29 20:11:12,798 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:12,798 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 20:11:12,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:12,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:12,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:11:12,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:12,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:12,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 20:11:12,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:12,918 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:11:12,919 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 [2020-11-29 20:11:12,919 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12 Second operand 7 states. [2020-11-29 20:11:12,923 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. [2020-11-29 20:11:12,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 20:11:12,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-29 20:11:12,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2020-11-29 20:11:12,924 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 5 letters. Loop has 10 letters. [2020-11-29 20:11:12,924 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:12,924 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 20:11:12,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:12,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:12,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:11:12,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:12,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:12,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 20:11:12,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:13,026 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:11:13,026 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 [2020-11-29 20:11:13,026 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12 Second operand 7 states. [2020-11-29 20:11:13,045 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. [2020-11-29 20:11:13,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 20:11:13,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-29 20:11:13,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2020-11-29 20:11:13,046 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 10 letters. [2020-11-29 20:11:13,046 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:13,046 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 20:11:13,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:13,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:13,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:11:13,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:13,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:13,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 20:11:13,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:13,168 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:11:13,169 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 [2020-11-29 20:11:13,169 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12 Second operand 7 states. [2020-11-29 20:11:13,216 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. [2020-11-29 20:11:13,216 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 [2020-11-29 20:11:13,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-29 20:11:13,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2020-11-29 20:11:13,217 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 5 letters. Loop has 10 letters. [2020-11-29 20:11:13,217 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:13,217 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 20:11:13,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:13,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:13,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:11:13,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:13,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:13,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 20:11:13,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:13,408 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:11:13,408 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 [2020-11-29 20:11:13,408 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 33 states and 41 transitions. cyclomatic complexity: 12 Second operand 7 states. [2020-11-29 20:11:13,474 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:13,475 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:13,476 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:13,476 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:13,478 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:13,529 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:13,529 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:13,530 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:13,530 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:13,530 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:13,531 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:13,531 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:13,531 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:13,546 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 [2020-11-29 20:11:13,554 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 [2020-11-29 20:11:13,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-29 20:11:13,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 29 transitions. [2020-11-29 20:11:13,555 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 29 transitions. Stem has 5 letters. Loop has 10 letters. [2020-11-29 20:11:13,556 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:13,556 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 29 transitions. Stem has 15 letters. Loop has 10 letters. [2020-11-29 20:11:13,557 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:13,557 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 29 transitions. Stem has 5 letters. Loop has 20 letters. [2020-11-29 20:11:13,561 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:13,561 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 404 states and 547 transitions. [2020-11-29 20:11:13,569 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 24 [2020-11-29 20:11:13,572 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 404 states to 145 states and 187 transitions. [2020-11-29 20:11:13,572 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-11-29 20:11:13,572 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-11-29 20:11:13,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 145 states and 187 transitions. [2020-11-29 20:11:13,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 20:11:13,573 INFO L691 BuchiCegarLoop]: Abstraction has 145 states and 187 transitions. [2020-11-29 20:11:13,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states and 187 transitions. [2020-11-29 20:11:13,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 96. [2020-11-29 20:11:13,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-11-29 20:11:13,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 129 transitions. [2020-11-29 20:11:13,593 INFO L714 BuchiCegarLoop]: Abstraction has 96 states and 129 transitions. [2020-11-29 20:11:13,593 INFO L594 BuchiCegarLoop]: Abstraction has 96 states and 129 transitions. [2020-11-29 20:11:13,594 INFO L427 BuchiCegarLoop]: ======== Iteration 11============ [2020-11-29 20:11:13,594 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 96 states and 129 transitions. [2020-11-29 20:11:13,595 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2020-11-29 20:11:13,598 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:11:13,599 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:11:13,599 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2020-11-29 20:11:13,600 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [7, 4, 3] [2020-11-29 20:11:13,600 INFO L794 eck$LassoCheckResult]: Stem: 2705#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 2708#L12-2 assume !!(main_~c~0 > 0); 2733#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 2725#L12-2 assume !!(main_~c~0 > 0); 2713#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 2701#L12-2 [2020-11-29 20:11:13,600 INFO L796 eck$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 [2020-11-29 20:11:13,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:13,601 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 6 times [2020-11-29 20:11:13,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:13,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617170407] [2020-11-29 20:11:13,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:13,608 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:13,612 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:13,616 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:11:13,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:13,618 INFO L82 PathProgramCache]: Analyzing trace with hash 822111324, now seen corresponding path program 6 times [2020-11-29 20:11:13,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:13,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386680689] [2020-11-29 20:11:13,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:13,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:13,633 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:13,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:13,651 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:13,653 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:11:13,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:13,666 INFO L82 PathProgramCache]: Analyzing trace with hash 128316933, now seen corresponding path program 9 times [2020-11-29 20:11:13,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:13,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055205490] [2020-11-29 20:11:13,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:13,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:13,675 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:13,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:13,682 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:13,684 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:11:13,844 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2020-11-29 20:11:13,877 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:11:13,877 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:11:13,877 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:11:13,877 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:11:13,877 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 20:11:13,878 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:13,878 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:11:13,878 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:11:13,878 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration11_Loop [2020-11-29 20:11:13,878 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:11:13,878 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:11:13,879 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:13,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:13,915 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:13,922 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:13,990 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:11:13,990 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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 [2020-11-29 20:11:13,992 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:11:13,993 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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 [2020-11-29 20:11:14,022 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 20:11:14,022 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 20:11:14,699 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 20:11:14,702 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:11:14,702 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:11:14,703 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:11:14,703 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:11:14,703 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 20:11:14,703 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:14,703 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:11:14,703 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:11:14,703 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration11_Loop [2020-11-29 20:11:14,703 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:11:14,703 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:11:14,704 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:14,713 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:14,719 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:14,722 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:14,775 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:11:14,775 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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) Waiting until toolchain timeout for monitored process 69 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:14,778 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:11:14,780 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:11:14,780 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:11:14,780 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:11:14,780 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:11:14,780 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:11:14,781 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:11:14,782 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 20:11:14,784 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 20:11:14,787 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 20:11:14,787 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_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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) Waiting until toolchain timeout for monitored process 70 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:14,790 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 20:11:14,790 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 20:11:14,790 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 20:11:14,790 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-11-29 20:11:14,815 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 20:11:14,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:14,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:11:14,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:14,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:14,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 20:11:14,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:15,021 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:11:15,022 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 [2020-11-29 20:11:15,022 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42 Second operand 9 states. [2020-11-29 20:11:15,032 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. [2020-11-29 20:11:15,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 20:11:15,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-29 20:11:15,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2020-11-29 20:11:15,034 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 5 letters. Loop has 14 letters. [2020-11-29 20:11:15,034 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:15,035 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 20:11:15,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:15,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:11:15,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:15,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:15,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 20:11:15,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:15,173 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:11:15,173 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 [2020-11-29 20:11:15,173 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42 Second operand 9 states. [2020-11-29 20:11:15,184 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. [2020-11-29 20:11:15,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 20:11:15,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-29 20:11:15,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2020-11-29 20:11:15,186 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 5 letters. Loop has 14 letters. [2020-11-29 20:11:15,186 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:15,186 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 20:11:15,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:15,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:15,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:11:15,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:15,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:15,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 20:11:15,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:15,349 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:11:15,350 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 [2020-11-29 20:11:15,350 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42 Second operand 9 states. [2020-11-29 20:11:15,374 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. [2020-11-29 20:11:15,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 20:11:15,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-29 20:11:15,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2020-11-29 20:11:15,376 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 14 letters. [2020-11-29 20:11:15,376 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:15,376 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 20:11:15,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:15,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:11:15,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:15,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:15,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 20:11:15,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:15,557 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:11:15,557 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 [2020-11-29 20:11:15,558 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42 Second operand 9 states. [2020-11-29 20:11:15,612 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. [2020-11-29 20:11:15,622 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 [2020-11-29 20:11:15,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-29 20:11:15,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2020-11-29 20:11:15,622 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 5 letters. Loop has 14 letters. [2020-11-29 20:11:15,623 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:15,623 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 20:11:15,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:15,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:15,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:11:15,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:15,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:15,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 20:11:15,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:15,803 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:11:15,804 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 [2020-11-29 20:11:15,804 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 96 states and 129 transitions. cyclomatic complexity: 42 Second operand 9 states. [2020-11-29 20:11:15,881 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:15,882 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:15,882 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:15,883 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:15,883 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:15,883 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:15,884 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:15,885 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:15,887 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:15,887 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:15,889 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:15,890 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:15,964 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:15,965 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:15,965 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:15,965 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:15,966 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:15,966 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:15,966 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:15,967 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:15,967 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:15,967 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:15,968 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:15,968 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:15,968 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:15,969 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:15,969 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:15,969 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:15,978 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:15,978 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:15,979 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:15,979 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:15,982 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:15,983 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:15,983 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:15,983 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:16,050 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:16,051 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:16,051 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:16,051 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:16,052 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:16,052 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:16,052 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:16,053 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:16,053 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:16,053 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:16,054 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:16,054 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:16,054 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:16,054 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:16,055 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:16,055 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:16,055 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:16,056 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:16,056 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:16,065 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:16,066 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:16,066 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:16,066 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:16,067 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:16,067 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:16,071 WARN L278 uchiComplementFKVNwa]: big8 [2020-11-29 20:11:16,127 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 [2020-11-29 20:11:16,128 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 [2020-11-29 20:11:16,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-29 20:11:16,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 39 transitions. [2020-11-29 20:11:16,129 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 39 transitions. Stem has 5 letters. Loop has 14 letters. [2020-11-29 20:11:16,130 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:16,131 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 39 transitions. Stem has 19 letters. Loop has 14 letters. [2020-11-29 20:11:16,132 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:16,132 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 39 transitions. Stem has 5 letters. Loop has 28 letters. [2020-11-29 20:11:16,138 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:16,138 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1787 states and 2714 transitions. [2020-11-29 20:11:16,164 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 33 [2020-11-29 20:11:16,172 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1787 states to 471 states and 636 transitions. [2020-11-29 20:11:16,172 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-11-29 20:11:16,172 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-11-29 20:11:16,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 471 states and 636 transitions. [2020-11-29 20:11:16,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 20:11:16,174 INFO L691 BuchiCegarLoop]: Abstraction has 471 states and 636 transitions. [2020-11-29 20:11:16,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states and 636 transitions. [2020-11-29 20:11:16,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 260. [2020-11-29 20:11:16,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-11-29 20:11:16,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 376 transitions. [2020-11-29 20:11:16,223 INFO L714 BuchiCegarLoop]: Abstraction has 260 states and 376 transitions. [2020-11-29 20:11:16,223 INFO L594 BuchiCegarLoop]: Abstraction has 260 states and 376 transitions. [2020-11-29 20:11:16,223 INFO L427 BuchiCegarLoop]: ======== Iteration 12============ [2020-11-29 20:11:16,223 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 260 states and 376 transitions. [2020-11-29 20:11:16,225 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2020-11-29 20:11:16,226 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:11:16,226 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:11:16,227 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2020-11-29 20:11:16,227 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [9, 5, 4] [2020-11-29 20:11:16,228 INFO L794 eck$LassoCheckResult]: Stem: 5618#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 5623#L12-2 assume !!(main_~c~0 > 0); 5681#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 5633#L12-2 assume !!(main_~c~0 > 0); 5630#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 5614#L12-2 [2020-11-29 20:11:16,228 INFO L796 eck$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 [2020-11-29 20:11:16,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:16,229 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 7 times [2020-11-29 20:11:16,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:16,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096173337] [2020-11-29 20:11:16,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:16,239 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:16,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:16,242 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:16,244 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:11:16,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:16,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1476420572, now seen corresponding path program 7 times [2020-11-29 20:11:16,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:16,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692774601] [2020-11-29 20:11:16,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:16,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:16,258 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:16,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:16,280 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:16,282 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:11:16,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:16,283 INFO L82 PathProgramCache]: Analyzing trace with hash 939927885, now seen corresponding path program 10 times [2020-11-29 20:11:16,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:16,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195440005] [2020-11-29 20:11:16,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:16,308 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:16,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:16,320 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:16,322 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:11:16,507 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 67 [2020-11-29 20:11:16,537 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:11:16,538 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:11:16,538 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:11:16,538 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:11:16,538 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 20:11:16,538 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:16,538 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:11:16,538 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:11:16,538 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration12_Loop [2020-11-29 20:11:16,538 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:11:16,538 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:11:16,539 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:16,549 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:16,556 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:16,559 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:16,655 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:11:16,655 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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 [2020-11-29 20:11:16,661 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:11:16,661 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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 [2020-11-29 20:11:16,688 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 20:11:16,688 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 20:11:16,747 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 20:11:16,748 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:11:16,749 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:11:16,749 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:11:16,749 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:11:16,749 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 20:11:16,749 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:16,749 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:11:16,749 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:11:16,749 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration12_Loop [2020-11-29 20:11:16,749 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:11:16,749 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:11:16,750 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:16,756 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:16,760 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:16,763 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:11:16,818 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:11:16,818 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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 [2020-11-29 20:11:16,821 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:11:16,823 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:11:16,823 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:11:16,823 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:11:16,824 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:11:16,824 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:11:16,825 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:11:16,825 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 20:11:16,828 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 20:11:16,837 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 20:11:16,837 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_8cb4e277-e40b-4ad7-8072-6d0432923b7d/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) [2020-11-29 20:11:16,839 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 20:11:16,840 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 20:11:16,840 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 20:11:16,840 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 74 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:16,865 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 20:11:16,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:16,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:16,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:11:16,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:16,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:16,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 20:11:16,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:16,973 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 45 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-29 20:11:16,974 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 [2020-11-29 20:11:16,974 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137 Second operand 8 states. [2020-11-29 20:11:16,991 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. [2020-11-29 20:11:16,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 20:11:16,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-29 20:11:16,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2020-11-29 20:11:16,994 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 5 letters. Loop has 18 letters. [2020-11-29 20:11:16,994 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:16,994 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 20:11:17,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:17,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:11:17,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:17,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:17,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 20:11:17,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:17,133 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 45 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-29 20:11:17,133 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 [2020-11-29 20:11:17,134 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137 Second operand 8 states. [2020-11-29 20:11:17,156 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. [2020-11-29 20:11:17,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 20:11:17,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-29 20:11:17,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2020-11-29 20:11:17,159 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 5 letters. Loop has 18 letters. [2020-11-29 20:11:17,159 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:17,159 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 20:11:17,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:17,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:11:17,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:17,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 20:11:17,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:17,283 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 45 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-29 20:11:17,283 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 [2020-11-29 20:11:17,284 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137 Second operand 8 states. [2020-11-29 20:11:17,329 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. [2020-11-29 20:11:17,330 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 [2020-11-29 20:11:17,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-29 20:11:17,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2020-11-29 20:11:17,330 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 18 letters. [2020-11-29 20:11:17,330 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:17,330 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 20:11:17,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:17,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:11:17,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:17,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:17,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 20:11:17,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:17,510 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 45 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-29 20:11:17,511 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 [2020-11-29 20:11:17,511 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137 Second operand 8 states. [2020-11-29 20:11:17,613 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. [2020-11-29 20:11:17,617 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 [2020-11-29 20:11:17,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-29 20:11:17,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 13 transitions. [2020-11-29 20:11:17,618 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 5 letters. Loop has 18 letters. [2020-11-29 20:11:17,619 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:17,619 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 23 letters. Loop has 18 letters. [2020-11-29 20:11:17,619 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:17,620 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 5 letters. Loop has 36 letters. [2020-11-29 20:11:17,621 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:17,622 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 511 states and 724 transitions. [2020-11-29 20:11:17,629 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 20:11:17,629 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 511 states to 0 states and 0 transitions. [2020-11-29 20:11:17,630 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 20:11:17,630 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 20:11:17,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 20:11:17,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 20:11:17,631 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:11:17,631 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:11:17,631 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:11:17,631 INFO L427 BuchiCegarLoop]: ======== Iteration 13============ [2020-11-29 20:11:17,631 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 20:11:17,631 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 20:11:17,632 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 20:11:17,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 08:11:17 BoogieIcfgContainer [2020-11-29 20:11:17,642 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 20:11:17,642 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:11:17,642 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:11:17,643 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:11:17,643 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:11:02" (3/4) ... [2020-11-29 20:11:17,647 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 20:11:17,647 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:11:17,648 INFO L168 Benchmark]: Toolchain (without parser) took 15785.08 ms. Allocated memory was 107.0 MB in the beginning and 192.9 MB in the end (delta: 86.0 MB). Free memory was 73.6 MB in the beginning and 143.2 MB in the end (delta: -69.6 MB). Peak memory consumption was 15.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:11:17,650 INFO L168 Benchmark]: CDTParser took 12.15 ms. Allocated memory is still 107.0 MB. Free memory was 80.6 MB in the beginning and 89.4 MB in the end (delta: -8.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:11:17,650 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.17 ms. Allocated memory is still 107.0 MB. Free memory was 73.5 MB in the beginning and 85.9 MB in the end (delta: -12.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:11:17,654 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.11 ms. Allocated memory is still 107.0 MB. Free memory was 85.9 MB in the beginning and 84.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:11:17,654 INFO L168 Benchmark]: Boogie Preprocessor took 22.05 ms. Allocated memory is still 107.0 MB. Free memory was 84.7 MB in the beginning and 83.9 MB in the end (delta: 852.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:11:17,655 INFO L168 Benchmark]: RCFGBuilder took 286.99 ms. Allocated memory is still 107.0 MB. Free memory was 83.9 MB in the beginning and 75.9 MB in the end (delta: 7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:11:17,655 INFO L168 Benchmark]: BuchiAutomizer took 15155.37 ms. Allocated memory was 107.0 MB in the beginning and 192.9 MB in the end (delta: 86.0 MB). Free memory was 75.5 MB in the beginning and 144.2 MB in the end (delta: -68.7 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:11:17,656 INFO L168 Benchmark]: Witness Printer took 5.01 ms. Allocated memory is still 192.9 MB. Free memory was 144.2 MB in the beginning and 143.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:11:17,658 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 12.15 ms. Allocated memory is still 107.0 MB. Free memory was 80.6 MB in the beginning and 89.4 MB in the end (delta: -8.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 270.17 ms. Allocated memory is still 107.0 MB. Free memory was 73.5 MB in the beginning and 85.9 MB in the end (delta: -12.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.11 ms. Allocated memory is still 107.0 MB. Free memory was 85.9 MB in the beginning and 84.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.05 ms. Allocated memory is still 107.0 MB. Free memory was 84.7 MB in the beginning and 83.9 MB in the end (delta: 852.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 286.99 ms. Allocated memory is still 107.0 MB. Free memory was 83.9 MB in the beginning and 75.9 MB in the end (delta: 7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 15155.37 ms. Allocated memory was 107.0 MB in the beginning and 192.9 MB in the end (delta: 86.0 MB). Free memory was 75.5 MB in the beginning and 144.2 MB in the end (delta: -68.7 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. * Witness Printer took 5.01 ms. Allocated memory is still 192.9 MB. Free memory was 144.2 MB in the beginning and 143.2 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 15.0s and 13 iterations. TraceHistogramMax:9. Analysis of lassos took 9.3s. Construction of modules took 0.6s. Büchi inclusion checks took 4.6s. 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, 0.6s 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: 43ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 11 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 11 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...