./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/c.02.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_7e89c39e-dd9e-49f0-b675-30ffbde1076d/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7e89c39e-dd9e-49f0-b675-30ffbde1076d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7e89c39e-dd9e-49f0-b675-30ffbde1076d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7e89c39e-dd9e-49f0-b675-30ffbde1076d/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/c.02.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7e89c39e-dd9e-49f0-b675-30ffbde1076d/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7e89c39e-dd9e-49f0-b675-30ffbde1076d/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 c3e40038ef85c6e1a2de0a898912241a10300c47 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 19:33:56,039 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:33:56,042 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:33:56,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:33:56,136 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:33:56,140 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:33:56,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:33:56,152 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:33:56,155 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:33:56,158 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:33:56,159 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:33:56,162 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:33:56,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:33:56,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:33:56,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:33:56,174 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:33:56,176 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:33:56,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:33:56,180 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:33:56,187 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:33:56,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:33:56,191 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:33:56,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:33:56,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:33:56,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:33:56,197 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:33:56,197 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:33:56,198 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:33:56,199 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:33:56,200 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:33:56,200 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:33:56,201 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:33:56,202 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:33:56,203 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:33:56,204 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:33:56,205 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:33:56,206 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:33:56,206 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:33:56,206 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:33:56,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:33:56,208 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:33:56,209 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7e89c39e-dd9e-49f0-b675-30ffbde1076d/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-29 19:33:56,232 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:33:56,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:33:56,234 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:33:56,234 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:33:56,235 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:33:56,235 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 19:33:56,235 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 19:33:56,235 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 19:33:56,236 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 19:33:56,236 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 19:33:56,236 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 19:33:56,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:33:56,236 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 19:33:56,237 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:33:56,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:33:56,237 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 19:33:56,237 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 19:33:56,238 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 19:33:56,238 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:33:56,238 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 19:33:56,238 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:33:56,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 19:33:56,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:33:56,239 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:33:56,239 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 19:33:56,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:33:56,240 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:33:56,240 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:33:56,240 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 19:33:56,241 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 19:33:56,241 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_7e89c39e-dd9e-49f0-b675-30ffbde1076d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7e89c39e-dd9e-49f0-b675-30ffbde1076d/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3e40038ef85c6e1a2de0a898912241a10300c47 [2020-11-29 19:33:56,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:33:56,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:33:56,513 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:33:56,514 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:33:56,515 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:33:56,516 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7e89c39e-dd9e-49f0-b675-30ffbde1076d/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/c.02.c [2020-11-29 19:33:56,595 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7e89c39e-dd9e-49f0-b675-30ffbde1076d/bin/uautomizer/data/f9a08e443/98583dbaee354567ae4b7e4f039dc544/FLAG1f8564940 [2020-11-29 19:33:57,121 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:33:57,122 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7e89c39e-dd9e-49f0-b675-30ffbde1076d/sv-benchmarks/c/termination-restricted-15/c.02.c [2020-11-29 19:33:57,133 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7e89c39e-dd9e-49f0-b675-30ffbde1076d/bin/uautomizer/data/f9a08e443/98583dbaee354567ae4b7e4f039dc544/FLAG1f8564940 [2020-11-29 19:33:57,500 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7e89c39e-dd9e-49f0-b675-30ffbde1076d/bin/uautomizer/data/f9a08e443/98583dbaee354567ae4b7e4f039dc544 [2020-11-29 19:33:57,503 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:33:57,504 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:33:57,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:33:57,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:33:57,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:33:57,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:33:57" (1/1) ... [2020-11-29 19:33:57,526 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7da31218 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:57, skipping insertion in model container [2020-11-29 19:33:57,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:33:57" (1/1) ... [2020-11-29 19:33:57,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:33:57,562 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:33:57,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:33:57,735 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:33:57,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:33:57,768 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:33:57,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:57 WrapperNode [2020-11-29 19:33:57,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:33:57,772 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:33:57,772 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:33:57,772 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:33:57,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:57" (1/1) ... [2020-11-29 19:33:57,787 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:57" (1/1) ... [2020-11-29 19:33:57,804 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:33:57,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:33:57,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:33:57,807 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:33:57,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:57" (1/1) ... [2020-11-29 19:33:57,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:57" (1/1) ... [2020-11-29 19:33:57,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:57" (1/1) ... [2020-11-29 19:33:57,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:57" (1/1) ... [2020-11-29 19:33:57,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:57" (1/1) ... [2020-11-29 19:33:57,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:57" (1/1) ... [2020-11-29 19:33:57,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:57" (1/1) ... [2020-11-29 19:33:57,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:33:57,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:33:57,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:33:57,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:33:57,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e89c39e-dd9e-49f0-b675-30ffbde1076d/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 19:33:57,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:33:57,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:33:58,058 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:33:58,059 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-29 19:33:58,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:33:58 BoogieIcfgContainer [2020-11-29 19:33:58,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:33:58,061 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 19:33:58,061 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 19:33:58,064 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 19:33:58,065 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:33:58,066 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 07:33:57" (1/3) ... [2020-11-29 19:33:58,067 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4561cc88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:33:58, skipping insertion in model container [2020-11-29 19:33:58,067 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:33:58,067 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:57" (2/3) ... [2020-11-29 19:33:58,068 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4561cc88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:33:58, skipping insertion in model container [2020-11-29 19:33:58,068 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:33:58,068 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:33:58" (3/3) ... [2020-11-29 19:33:58,069 INFO L373 chiAutomizerObserver]: Analyzing ICFG c.02.c [2020-11-29 19:33:58,118 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 19:33:58,119 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 19:33:58,119 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 19:33:58,119 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:33:58,119 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:33:58,119 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 19:33:58,120 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:33:58,120 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 19:33:58,131 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-29 19:33:58,164 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 19:33:58,173 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:33:58,173 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:33:58,179 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 19:33:58,195 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 19:33:58,195 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 19:33:58,195 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-29 19:33:58,196 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 19:33:58,196 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:33:58,197 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:33:58,197 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 19:33:58,197 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 19:33:58,204 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 9#L10-2true [2020-11-29 19:33:58,204 INFO L796 eck$LassoCheckResult]: Loop: 9#L10-2true assume !!(main_~x~0 >= 0 && main_~x~0 < 2147483647);main_~x~0 := 1 + main_~x~0;main_~y~0 := 1; 5#L13-2true assume !(main_~x~0 > main_~y~0); 3#L13-3true main_~x~0 := main_~x~0 - 2; 9#L10-2true [2020-11-29 19:33:58,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:33:58,223 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-29 19:33:58,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:33:58,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288574150] [2020-11-29 19:33:58,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:33:58,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:33:58,332 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:33:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:33:58,349 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:33:58,367 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:33:58,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:33:58,374 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2020-11-29 19:33:58,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:33:58,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366712653] [2020-11-29 19:33:58,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:33:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:33:58,399 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:33:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:33:58,416 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:33:58,420 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:33:58,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:33:58,432 INFO L82 PathProgramCache]: Analyzing trace with hash 963472, now seen corresponding path program 1 times [2020-11-29 19:33:58,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:33:58,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035181400] [2020-11-29 19:33:58,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:33:58,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:33:58,444 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:33:58,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:33:58,457 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:33:58,462 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:33:58,576 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2020-11-29 19:33:58,653 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:33:58,654 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:33:58,654 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:33:58,654 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:33:58,655 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 19:33:58,655 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:33:58,655 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:33:58,655 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:33:58,656 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.02.c_Iteration1_Loop [2020-11-29 19:33:58,656 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:33:58,656 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:33:58,674 INFO 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 19:33:58,692 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:33:58,703 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:33:58,821 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:33:58,822 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e89c39e-dd9e-49f0-b675-30ffbde1076d/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 19:33:58,836 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:33:58,836 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 19:33:58,844 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:33:58,845 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_7e89c39e-dd9e-49f0-b675-30ffbde1076d/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:33:58,884 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:33:58,884 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:33:58,888 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:33:58,889 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_7e89c39e-dd9e-49f0-b675-30ffbde1076d/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:33:58,928 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:33:58,928 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e89c39e-dd9e-49f0-b675-30ffbde1076d/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 19:33:58,976 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 19:33:58,976 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 19:33:59,139 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 19:33:59,142 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:33:59,142 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:33:59,142 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:33:59,142 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:33:59,143 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 19:33:59,143 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:33:59,143 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:33:59,143 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:33:59,143 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.02.c_Iteration1_Loop [2020-11-29 19:33:59,143 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:33:59,144 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:33:59,145 INFO 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 19:33:59,152 INFO 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 19:33:59,174 INFO 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 19:33:59,284 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:33:59,289 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e89c39e-dd9e-49f0-b675-30ffbde1076d/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:33:59,297 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 19:33:59,299 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:33:59,300 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:33:59,300 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:33:59,300 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:33:59,309 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:33:59,309 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:33:59,321 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e89c39e-dd9e-49f0-b675-30ffbde1076d/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:33:59,362 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 19:33:59,364 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:33:59,365 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:33:59,365 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:33:59,365 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:33:59,366 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:33:59,369 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:33:59,370 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:33:59,373 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 19:33:59,378 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 19:33:59,378 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e89c39e-dd9e-49f0-b675-30ffbde1076d/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 19:33:59,408 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 19:33:59,408 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 19:33:59,408 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 19:33:59,409 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:33:59,445 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 19:33:59,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:33:59,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:33:59,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:33:59,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:33:59,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:33:59,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 19:33:59,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:33:59,571 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 19:33:59,585 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 19:33:59,587 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2020-11-29 19:33:59,656 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 23 states and 35 transitions. Complement of second has 7 states. [2020-11-29 19:33:59,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 19:33:59,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 19:33:59,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2020-11-29 19:33:59,666 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 3 letters. [2020-11-29 19:33:59,680 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:33:59,680 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 4 letters. Loop has 3 letters. [2020-11-29 19:33:59,680 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:33:59,681 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 6 letters. [2020-11-29 19:33:59,681 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:33:59,682 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 35 transitions. [2020-11-29 19:33:59,684 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 19:33:59,688 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2020-11-29 19:33:59,689 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-11-29 19:33:59,689 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-11-29 19:33:59,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2020-11-29 19:33:59,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:33:59,691 INFO L691 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-11-29 19:33:59,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2020-11-29 19:33:59,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2020-11-29 19:33:59,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-29 19:33:59,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2020-11-29 19:33:59,727 INFO L714 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2020-11-29 19:33:59,727 INFO L594 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2020-11-29 19:33:59,728 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 19:33:59,728 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 9 transitions. [2020-11-29 19:33:59,728 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 19:33:59,729 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:33:59,729 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:33:59,740 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-29 19:33:59,741 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-29 19:33:59,741 INFO L794 eck$LassoCheckResult]: Stem: 72#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 73#L10-2 assume !!(main_~x~0 >= 0 && main_~x~0 < 2147483647);main_~x~0 := 1 + main_~x~0;main_~y~0 := 1; 74#L13-2 [2020-11-29 19:33:59,741 INFO L796 eck$LassoCheckResult]: Loop: 74#L13-2 assume !!(main_~x~0 > main_~y~0);main_~y~0 := 1 + main_~y~0; 74#L13-2 [2020-11-29 19:33:59,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:33:59,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-11-29 19:33:59,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:33:59,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090760393] [2020-11-29 19:33:59,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:33:59,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:33:59,747 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:33:59,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:33:59,751 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:33:59,753 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:33:59,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:33:59,763 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2020-11-29 19:33:59,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:33:59,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44569646] [2020-11-29 19:33:59,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:33:59,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:33:59,768 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:33:59,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:33:59,770 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:33:59,771 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:33:59,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:33:59,772 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2020-11-29 19:33:59,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:33:59,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137397336] [2020-11-29 19:33:59,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:33:59,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:33:59,778 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:33:59,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:33:59,783 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:33:59,785 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:33:59,853 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:33:59,853 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:33:59,854 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:33:59,854 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:33:59,854 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 19:33:59,854 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:33:59,854 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:33:59,854 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:33:59,854 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.02.c_Iteration2_Loop [2020-11-29 19:33:59,854 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:33:59,854 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:33:59,856 INFO 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 19:33:59,886 INFO 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 19:33:59,893 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:33:59,965 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:33:59,965 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e89c39e-dd9e-49f0-b675-30ffbde1076d/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:33:59,972 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:33:59,973 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 19:33:59,980 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:33:59,980 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_7e89c39e-dd9e-49f0-b675-30ffbde1076d/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:34:00,017 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:34:00,017 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 19:34:00,025 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:34:00,025 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e89c39e-dd9e-49f0-b675-30ffbde1076d/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 19:34:00,051 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:34:00,051 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e89c39e-dd9e-49f0-b675-30ffbde1076d/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 19:34:00,076 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 19:34:00,076 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 19:34:00,227 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 19:34:00,228 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:34:00,228 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:34:00,228 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:34:00,228 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:34:00,228 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 19:34:00,229 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:34:00,229 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:34:00,229 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:34:00,229 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.02.c_Iteration2_Loop [2020-11-29 19:34:00,229 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:34:00,229 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:34:00,230 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 19:34:00,239 INFO 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 19:34:00,250 INFO 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 19:34:00,337 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:34:00,337 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e89c39e-dd9e-49f0-b675-30ffbde1076d/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) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:34:00,339 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 19:34:00,341 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:34:00,341 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:34:00,341 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:34:00,341 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:34:00,345 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:34:00,345 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 19:34:00,362 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e89c39e-dd9e-49f0-b675-30ffbde1076d/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 19:34:00,386 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 19:34:00,387 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:34:00,387 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:34:00,387 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:34:00,387 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:34:00,391 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:34:00,391 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 19:34:00,395 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e89c39e-dd9e-49f0-b675-30ffbde1076d/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 19:34:00,419 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 19:34:00,421 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:34:00,421 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:34:00,421 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:34:00,421 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:34:00,421 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:34:00,422 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:34:00,423 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:34:00,428 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 19:34:00,431 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 19:34:00,431 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e89c39e-dd9e-49f0-b675-30ffbde1076d/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 19:34:00,434 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 19:34:00,434 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 19:34:00,435 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 19:34:00,435 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-11-29 19:34:00,454 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 19:34:00,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:34:00,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:34:00,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:34:00,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:34:00,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:34:00,529 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:34:00,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:34:00,530 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 19:34:00,530 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 19:34:00,530 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5 Second operand 2 states. [2020-11-29 19:34:00,550 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 13 states and 18 transitions. Complement of second has 5 states. [2020-11-29 19:34:00,552 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 19:34:00,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-29 19:34:00,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2020-11-29 19:34:00,552 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 1 letters. [2020-11-29 19:34:00,552 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:34:00,553 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2020-11-29 19:34:00,553 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:34:00,553 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2020-11-29 19:34:00,553 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:34:00,553 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 18 transitions. [2020-11-29 19:34:00,554 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 19:34:00,554 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 9 states and 13 transitions. [2020-11-29 19:34:00,555 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-11-29 19:34:00,555 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2020-11-29 19:34:00,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2020-11-29 19:34:00,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:34:00,555 INFO L691 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2020-11-29 19:34:00,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2020-11-29 19:34:00,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 6. [2020-11-29 19:34:00,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-29 19:34:00,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2020-11-29 19:34:00,556 INFO L714 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-11-29 19:34:00,556 INFO L594 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-11-29 19:34:00,556 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 19:34:00,556 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2020-11-29 19:34:00,557 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 19:34:00,557 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:34:00,557 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:34:00,557 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2020-11-29 19:34:00,557 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-29 19:34:00,558 INFO L794 eck$LassoCheckResult]: Stem: 120#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 121#L10-2 assume !!(main_~x~0 >= 0 && main_~x~0 < 2147483647);main_~x~0 := 1 + main_~x~0;main_~y~0 := 1; 123#L13-2 assume !(main_~x~0 > main_~y~0); 118#L13-3 main_~x~0 := main_~x~0 - 2; 119#L10-2 assume !!(main_~x~0 >= 0 && main_~x~0 < 2147483647);main_~x~0 := 1 + main_~x~0;main_~y~0 := 1; 122#L13-2 [2020-11-29 19:34:00,558 INFO L796 eck$LassoCheckResult]: Loop: 122#L13-2 assume !!(main_~x~0 > main_~y~0);main_~y~0 := 1 + main_~y~0; 122#L13-2 [2020-11-29 19:34:00,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:34:00,558 INFO L82 PathProgramCache]: Analyzing trace with hash 29867642, now seen corresponding path program 2 times [2020-11-29 19:34:00,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:34:00,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556385148] [2020-11-29 19:34:00,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:34:00,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:34:00,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:34:00,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556385148] [2020-11-29 19:34:00,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:34:00,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:34:00,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190496773] [2020-11-29 19:34:00,649 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 19:34:00,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:34:00,650 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2020-11-29 19:34:00,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:34:00,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585517818] [2020-11-29 19:34:00,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:34:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:34:00,654 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:34:00,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:34:00,656 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:34:00,657 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:34:00,669 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:34:00,669 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:34:00,670 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:34:00,670 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:34:00,670 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 19:34:00,670 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:34:00,670 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:34:00,670 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:34:00,670 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.02.c_Iteration3_Loop [2020-11-29 19:34:00,670 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:34:00,670 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:34:00,671 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:34:00,676 INFO 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 19:34:00,683 INFO 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 19:34:00,742 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:34:00,742 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e89c39e-dd9e-49f0-b675-30ffbde1076d/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 19:34:00,753 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:34:00,753 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 19:34:00,759 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:34:00,759 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e89c39e-dd9e-49f0-b675-30ffbde1076d/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:34:00,834 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:34:00,834 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e89c39e-dd9e-49f0-b675-30ffbde1076d/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:34:00,859 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 19:34:00,859 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 19:34:01,062 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 19:34:01,064 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:34:01,064 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:34:01,064 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:34:01,064 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:34:01,064 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 19:34:01,064 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:34:01,064 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:34:01,064 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:34:01,064 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.02.c_Iteration3_Loop [2020-11-29 19:34:01,064 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:34:01,064 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:34:01,066 INFO 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 19:34:01,073 INFO 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 19:34:01,084 INFO 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 19:34:01,145 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:34:01,145 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e89c39e-dd9e-49f0-b675-30ffbde1076d/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:34:01,159 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 19:34:01,161 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:34:01,162 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:34:01,162 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:34:01,162 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:34:01,169 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:34:01,169 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:34:01,181 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e89c39e-dd9e-49f0-b675-30ffbde1076d/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:34:01,218 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 19:34:01,219 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:34:01,219 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:34:01,219 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:34:01,219 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:34:01,220 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:34:01,220 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:34:01,220 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:34:01,224 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 19:34:01,229 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-11-29 19:34:01,230 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e89c39e-dd9e-49f0-b675-30ffbde1076d/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 19:34:01,235 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 19:34:01,235 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 19:34:01,236 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 19:34:01,236 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:34:01,270 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 19:34:01,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:34:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:34:01,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:34:01,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:34:01,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:34:01,312 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:34:01,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:34:01,313 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 19:34:01,313 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 19:34:01,313 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2020-11-29 19:34:01,328 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 11 states and 15 transitions. Complement of second has 5 states. [2020-11-29 19:34:01,329 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 19:34:01,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-29 19:34:01,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2020-11-29 19:34:01,330 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 1 letters. [2020-11-29 19:34:01,330 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:34:01,330 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 19:34:01,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:34:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:34:01,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:34:01,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:34:01,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:34:01,362 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:34:01,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:34:01,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:34:01,363 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 19:34:01,363 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2020-11-29 19:34:01,373 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 11 states and 15 transitions. Complement of second has 5 states. [2020-11-29 19:34:01,374 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 19:34:01,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-29 19:34:01,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2020-11-29 19:34:01,374 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 1 letters. [2020-11-29 19:34:01,374 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:34:01,374 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 19:34:01,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:34:01,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:34:01,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:34:01,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:34:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:34:01,408 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:34:01,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:34:01,409 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 19:34:01,409 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 19:34:01,409 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2020-11-29 19:34:01,426 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 9 states and 11 transitions. Complement of second has 4 states. [2020-11-29 19:34:01,427 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 19:34:01,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-29 19:34:01,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-11-29 19:34:01,427 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 1 letters. [2020-11-29 19:34:01,428 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:34:01,428 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 1 letters. [2020-11-29 19:34:01,428 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:34:01,428 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2020-11-29 19:34:01,428 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:34:01,428 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 11 transitions. [2020-11-29 19:34:01,429 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 19:34:01,429 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2020-11-29 19:34:01,429 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 19:34:01,429 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 19:34:01,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 19:34:01,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 19:34:01,429 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:34:01,430 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:34:01,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:34:01,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:34:01,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:34:01,433 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2020-11-29 19:34:01,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:34:01,435 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-11-29 19:34:01,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 19:34:01,435 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-11-29 19:34:01,435 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 19:34:01,435 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 19:34:01,435 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 19:34:01,435 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 19:34:01,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 19:34:01,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 19:34:01,436 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:34:01,436 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:34:01,436 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:34:01,436 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 19:34:01,436 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 19:34:01,436 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 19:34:01,436 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 19:34:01,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 07:34:01 BoogieIcfgContainer [2020-11-29 19:34:01,441 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 19:34:01,442 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:34:01,442 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:34:01,442 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:34:01,442 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:33:58" (3/4) ... [2020-11-29 19:34:01,445 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 19:34:01,445 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:34:01,446 INFO L168 Benchmark]: Toolchain (without parser) took 3941.64 ms. Allocated memory was 107.0 MB in the beginning and 132.1 MB in the end (delta: 25.2 MB). Free memory was 76.9 MB in the beginning and 73.0 MB in the end (delta: 3.9 MB). Peak memory consumption was 30.0 MB. Max. memory is 16.1 GB. [2020-11-29 19:34:01,447 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 75.5 MB. Free memory was 33.4 MB in the beginning and 33.3 MB in the end (delta: 32.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:34:01,448 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.81 ms. Allocated memory is still 107.0 MB. Free memory was 76.9 MB in the beginning and 86.0 MB in the end (delta: -9.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:34:01,448 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.77 ms. Allocated memory is still 107.0 MB. Free memory was 86.0 MB in the beginning and 84.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:34:01,449 INFO L168 Benchmark]: Boogie Preprocessor took 19.64 ms. Allocated memory is still 107.0 MB. Free memory was 84.6 MB in the beginning and 83.8 MB in the end (delta: 817.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:34:01,449 INFO L168 Benchmark]: RCFGBuilder took 233.56 ms. Allocated memory is still 107.0 MB. Free memory was 83.8 MB in the beginning and 75.7 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:34:01,450 INFO L168 Benchmark]: BuchiAutomizer took 3380.14 ms. Allocated memory was 107.0 MB in the beginning and 132.1 MB in the end (delta: 25.2 MB). Free memory was 75.3 MB in the beginning and 73.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 30.6 MB. Max. memory is 16.1 GB. [2020-11-29 19:34:01,450 INFO L168 Benchmark]: Witness Printer took 3.50 ms. Allocated memory is still 132.1 MB. Free memory is still 73.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:34:01,454 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 75.5 MB. Free memory was 33.4 MB in the beginning and 33.3 MB in the end (delta: 32.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 257.81 ms. Allocated memory is still 107.0 MB. Free memory was 76.9 MB in the beginning and 86.0 MB in the end (delta: -9.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.77 ms. Allocated memory is still 107.0 MB. Free memory was 86.0 MB in the beginning and 84.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.64 ms. Allocated memory is still 107.0 MB. Free memory was 84.6 MB in the beginning and 83.8 MB in the end (delta: 817.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 233.56 ms. Allocated memory is still 107.0 MB. Free memory was 83.8 MB in the beginning and 75.7 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 3380.14 ms. Allocated memory was 107.0 MB in the beginning and 132.1 MB in the end (delta: 25.2 MB). Free memory was 75.3 MB in the beginning and 73.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 30.6 MB. Max. memory is 16.1 GB. * Witness Printer took 3.50 ms. Allocated memory is still 132.1 MB. Free memory is still 73.0 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 4 terminating modules (1 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * x + 1 and consists of 5 locations. One deterministic module has affine ranking function -1 * y + x and consists of 3 locations. One nondeterministic module has affine ranking function -1 * y + x and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.3s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 2.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 6 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 15 SDtfs, 18 SDslu, 6 SDs, 0 SdLazy, 42 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax199 hnf96 lsp50 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq158 hnf93 smp89 dnf100 smp100 tf112 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 26ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...