./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/b.10.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_acbcb6e7-35fd-4578-ac5f-a881139703ea/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_acbcb6e7-35fd-4578-ac5f-a881139703ea/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_acbcb6e7-35fd-4578-ac5f-a881139703ea/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_acbcb6e7-35fd-4578-ac5f-a881139703ea/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/b.10.c -s /tmp/vcloud-vcloud-master/worker/run_dir_acbcb6e7-35fd-4578-ac5f-a881139703ea/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_acbcb6e7-35fd-4578-ac5f-a881139703ea/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 65c77d618a9e810a6bfd209782657510debb85fd ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:30:20,024 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:30:20,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:30:20,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:30:20,084 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:30:20,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:30:20,115 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:30:20,121 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:30:20,126 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:30:20,131 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:30:20,133 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:30:20,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:30:20,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:30:20,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:30:20,150 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:30:20,152 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:30:20,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:30:20,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:30:20,165 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:30:20,173 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:30:20,178 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:30:20,181 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:30:20,183 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:30:20,185 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:30:20,192 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:30:20,192 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:30:20,192 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:30:20,194 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:30:20,194 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:30:20,196 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:30:20,196 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:30:20,197 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:30:20,198 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:30:20,199 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:30:20,201 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:30:20,201 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:30:20,202 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:30:20,203 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:30:20,203 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:30:20,204 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:30:20,205 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:30:20,208 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_acbcb6e7-35fd-4578-ac5f-a881139703ea/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-30 01:30:20,234 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:30:20,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:30:20,236 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:30:20,237 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:30:20,237 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:30:20,237 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 01:30:20,237 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 01:30:20,237 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 01:30:20,238 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 01:30:20,238 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 01:30:20,238 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 01:30:20,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:30:20,239 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 01:30:20,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:30:20,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:30:20,239 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 01:30:20,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 01:30:20,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 01:30:20,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:30:20,240 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 01:30:20,241 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:30:20,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 01:30:20,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:30:20,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:30:20,242 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 01:30:20,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:30:20,242 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:30:20,242 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:30:20,243 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 01:30:20,244 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 01:30:20,244 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_acbcb6e7-35fd-4578-ac5f-a881139703ea/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_acbcb6e7-35fd-4578-ac5f-a881139703ea/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65c77d618a9e810a6bfd209782657510debb85fd [2020-11-30 01:30:20,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:30:20,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:30:20,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:30:20,570 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:30:20,571 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:30:20,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_acbcb6e7-35fd-4578-ac5f-a881139703ea/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/b.10.c [2020-11-30 01:30:20,679 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_acbcb6e7-35fd-4578-ac5f-a881139703ea/bin/uautomizer/data/5f80573cd/b4616fa854a44e68bf8912c9c3cacaeb/FLAG695869517 [2020-11-30 01:30:21,192 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:30:21,193 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_acbcb6e7-35fd-4578-ac5f-a881139703ea/sv-benchmarks/c/termination-restricted-15/b.10.c [2020-11-30 01:30:21,199 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_acbcb6e7-35fd-4578-ac5f-a881139703ea/bin/uautomizer/data/5f80573cd/b4616fa854a44e68bf8912c9c3cacaeb/FLAG695869517 [2020-11-30 01:30:21,571 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_acbcb6e7-35fd-4578-ac5f-a881139703ea/bin/uautomizer/data/5f80573cd/b4616fa854a44e68bf8912c9c3cacaeb [2020-11-30 01:30:21,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:30:21,577 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:30:21,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:30:21,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:30:21,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:30:21,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:30:21" (1/1) ... [2020-11-30 01:30:21,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c49896c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:30:21, skipping insertion in model container [2020-11-30 01:30:21,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:30:21" (1/1) ... [2020-11-30 01:30:21,596 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:30:21,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:30:21,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:30:21,785 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:30:21,811 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:30:21,840 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:30:21,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:30:21 WrapperNode [2020-11-30 01:30:21,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:30:21,844 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:30:21,844 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:30:21,845 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:30:21,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:30:21" (1/1) ... [2020-11-30 01:30:21,858 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:30:21" (1/1) ... [2020-11-30 01:30:21,874 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:30:21,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:30:21,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:30:21,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:30:21,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:30:21" (1/1) ... [2020-11-30 01:30:21,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:30:21" (1/1) ... [2020-11-30 01:30:21,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:30:21" (1/1) ... [2020-11-30 01:30:21,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:30:21" (1/1) ... [2020-11-30 01:30:21,887 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:30:21" (1/1) ... [2020-11-30 01:30:21,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:30:21" (1/1) ... [2020-11-30 01:30:21,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:30:21" (1/1) ... [2020-11-30 01:30:21,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:30:21,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:30:21,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:30:21,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:30:21,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:30:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_acbcb6e7-35fd-4578-ac5f-a881139703ea/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:30:21,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:30:21,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:30:22,155 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:30:22,155 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-30 01:30:22,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:30:22 BoogieIcfgContainer [2020-11-30 01:30:22,158 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:30:22,159 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 01:30:22,159 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 01:30:22,163 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 01:30:22,164 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:30:22,165 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 01:30:21" (1/3) ... [2020-11-30 01:30:22,166 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@477386c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 01:30:22, skipping insertion in model container [2020-11-30 01:30:22,166 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:30:22,166 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:30:21" (2/3) ... [2020-11-30 01:30:22,167 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@477386c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 01:30:22, skipping insertion in model container [2020-11-30 01:30:22,167 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:30:22,167 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:30:22" (3/3) ... [2020-11-30 01:30:22,169 INFO L373 chiAutomizerObserver]: Analyzing ICFG b.10.c [2020-11-30 01:30:22,223 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 01:30:22,223 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 01:30:22,224 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 01:30:22,224 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:30:22,224 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:30:22,224 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 01:30:22,224 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:30:22,225 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 01:30:22,236 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-30 01:30:22,252 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 01:30:22,252 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:30:22,252 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:30:22,260 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-30 01:30:22,260 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-30 01:30:22,260 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 01:30:22,260 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-30 01:30:22,261 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 01:30:22,262 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:30:22,262 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:30:22,262 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-30 01:30:22,262 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-30 01:30:22,269 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 8#L15-2true [2020-11-30 01:30:22,270 INFO L796 eck$LassoCheckResult]: Loop: 8#L15-2true assume !!(((main_~x~0 >= 0 && main_~y~0 < 2147483647 - main_~x~0) || (main_~x~0 < 0 && main_~y~0 > -2147483648 - main_~x~0)) && main_~x~0 + main_~y~0 > 0); 6#L12true assume main_~x~0 > 0;main_~x~0 := main_~x~0 - 1; 8#L15-2true [2020-11-30 01:30:22,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:30:22,276 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-30 01:30:22,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:30:22,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609108885] [2020-11-30 01:30:22,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:30:22,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:30:22,357 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:30:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:30:22,362 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:30:22,378 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:30:22,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:30:22,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2020-11-30 01:30:22,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:30:22,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587630540] [2020-11-30 01:30:22,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:30:22,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:30:22,393 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:30:22,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:30:22,399 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:30:22,400 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:30:22,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:30:22,403 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2020-11-30 01:30:22,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:30:22,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457627170] [2020-11-30 01:30:22,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:30:22,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:30:22,412 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:30:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:30:22,419 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:30:22,421 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:30:22,652 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 13 [2020-11-30 01:30:22,709 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:30:22,709 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:30:22,710 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:30:22,710 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:30:22,710 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 01:30:22,710 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:30:22,710 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:30:22,710 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:30:22,711 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.10.c_Iteration1_Loop [2020-11-30 01:30:22,711 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:30:22,711 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:30:22,732 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:22,745 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:22,758 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:22,917 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:30:22,917 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_acbcb6e7-35fd-4578-ac5f-a881139703ea/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:30:22,931 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:30:22,932 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:30:22,944 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:30:22,944 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_acbcb6e7-35fd-4578-ac5f-a881139703ea/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:30:22,984 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:30:22,984 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:30:22,993 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:30:22,993 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_acbcb6e7-35fd-4578-ac5f-a881139703ea/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) [2020-11-30 01:30:23,036 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:30:23,037 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_acbcb6e7-35fd-4578-ac5f-a881139703ea/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:30:23,085 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 01:30:23,085 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:30:23,133 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 01:30:23,135 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:30:23,135 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:30:23,135 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:30:23,135 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:30:23,135 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:30:23,135 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:30:23,135 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:30:23,136 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:30:23,136 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.10.c_Iteration1_Loop [2020-11-30 01:30:23,136 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:30:23,136 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:30:23,138 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:23,149 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:23,206 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:23,364 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:30:23,377 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_acbcb6e7-35fd-4578-ac5f-a881139703ea/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:30:23,403 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:30:23,406 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:30:23,406 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:30:23,406 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:30:23,406 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:30:23,418 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:30:23,419 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:30:23,434 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_acbcb6e7-35fd-4578-ac5f-a881139703ea/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) [2020-11-30 01:30:23,496 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:30:23,499 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:30:23,500 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:30:23,500 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:30:23,500 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:30:23,501 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:30:23,505 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:30:23,506 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 [2020-11-30 01:30:23,513 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:30:23,521 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 01:30:23,522 INFO L444 ModelExtractionUtils]: 1 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_acbcb6e7-35fd-4578-ac5f-a881139703ea/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:30:23,565 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 01:30:23,565 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 01:30:23,566 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:30:23,566 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:30:23,604 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 01:30:23,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:30:23,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:30:23,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:30:23,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:30:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:30:23,693 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:30:23,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:30:23,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:30:23,713 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 [2020-11-30 01:30:23,714 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2020-11-30 01:30:23,775 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 23 states and 34 transitions. Complement of second has 5 states. [2020-11-30 01:30:23,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-30 01:30:23,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 01:30:23,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2020-11-30 01:30:23,779 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 1 letters. Loop has 2 letters. [2020-11-30 01:30:23,780 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:30:23,781 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 3 letters. Loop has 2 letters. [2020-11-30 01:30:23,781 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:30:23,781 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 1 letters. Loop has 4 letters. [2020-11-30 01:30:23,781 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:30:23,782 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 34 transitions. [2020-11-30 01:30:23,785 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 01:30:23,789 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 10 states and 15 transitions. [2020-11-30 01:30:23,790 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-11-30 01:30:23,790 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-11-30 01:30:23,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 15 transitions. [2020-11-30 01:30:23,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:30:23,791 INFO L691 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2020-11-30 01:30:23,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 15 transitions. [2020-11-30 01:30:23,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2020-11-30 01:30:23,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-30 01:30:23,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 14 transitions. [2020-11-30 01:30:23,814 INFO L714 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2020-11-30 01:30:23,814 INFO L594 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2020-11-30 01:30:23,814 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 01:30:23,814 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 14 transitions. [2020-11-30 01:30:23,815 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 01:30:23,815 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:30:23,815 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:30:23,816 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-30 01:30:23,816 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 01:30:23,816 INFO L794 eck$LassoCheckResult]: Stem: 67#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; 68#L15-2 assume !!(((main_~x~0 >= 0 && main_~y~0 < 2147483647 - main_~x~0) || (main_~x~0 < 0 && main_~y~0 > -2147483648 - main_~x~0)) && main_~x~0 + main_~y~0 > 0); 69#L12 [2020-11-30 01:30:23,816 INFO L796 eck$LassoCheckResult]: Loop: 69#L12 assume !(main_~x~0 > 0); 63#L15 assume main_~y~0 > 0;main_~y~0 := main_~y~0 - 1; 64#L15-2 assume !!(((main_~x~0 >= 0 && main_~y~0 < 2147483647 - main_~x~0) || (main_~x~0 < 0 && main_~y~0 > -2147483648 - main_~x~0)) && main_~x~0 + main_~y~0 > 0); 69#L12 [2020-11-30 01:30:23,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:30:23,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-11-30 01:30:23,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:30:23,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917990937] [2020-11-30 01:30:23,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:30:23,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:30:23,827 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:30:23,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:30:23,834 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:30:23,836 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:30:23,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:30:23,837 INFO L82 PathProgramCache]: Analyzing trace with hash 44774, now seen corresponding path program 1 times [2020-11-30 01:30:23,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:30:23,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335126081] [2020-11-30 01:30:23,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:30:23,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:30:23,846 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:30:23,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:30:23,852 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:30:23,853 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:30:23,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:30:23,854 INFO L82 PathProgramCache]: Analyzing trace with hash 29865565, now seen corresponding path program 1 times [2020-11-30 01:30:23,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:30:23,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708021992] [2020-11-30 01:30:23,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:30:23,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:30:23,899 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:30:23,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:30:23,916 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:30:23,918 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:30:24,057 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:30:24,058 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:30:24,058 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:30:24,058 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:30:24,058 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 01:30:24,058 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:30:24,058 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:30:24,058 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:30:24,058 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.10.c_Iteration2_Loop [2020-11-30 01:30:24,058 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:30:24,058 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:30:24,060 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:24,070 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:24,083 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:24,253 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:30:24,253 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_acbcb6e7-35fd-4578-ac5f-a881139703ea/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:30:24,258 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:30:24,258 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:30:24,264 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:30:24,264 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_acbcb6e7-35fd-4578-ac5f-a881139703ea/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:30:24,313 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:30:24,313 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:30:24,318 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:30:24,318 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_acbcb6e7-35fd-4578-ac5f-a881139703ea/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:30:24,362 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:30:24,362 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_acbcb6e7-35fd-4578-ac5f-a881139703ea/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:30:24,422 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 01:30:24,422 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:30:24,481 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 01:30:24,483 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:30:24,484 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:30:24,484 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:30:24,484 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:30:24,484 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:30:24,484 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:30:24,484 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:30:24,484 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:30:24,484 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.10.c_Iteration2_Loop [2020-11-30 01:30:24,485 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:30:24,485 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:30:24,487 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:24,492 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:24,509 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:24,642 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:30:24,642 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_acbcb6e7-35fd-4578-ac5f-a881139703ea/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:30:24,650 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:30:24,653 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:30:24,654 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:30:24,654 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:30:24,654 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:30:24,665 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:30:24,665 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:30:24,671 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_acbcb6e7-35fd-4578-ac5f-a881139703ea/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 [2020-11-30 01:30:24,714 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:30:24,716 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:30:24,716 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:30:24,716 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:30:24,716 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-30 01:30:24,716 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:30:24,720 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-11-30 01:30:24,720 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:30:24,728 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:30:24,733 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 01:30:24,733 INFO L444 ModelExtractionUtils]: 1 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_acbcb6e7-35fd-4578-ac5f-a881139703ea/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 [2020-11-30 01:30:24,740 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 01:30:24,740 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 01:30:24,740 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:30:24,741 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-11-30 01:30:24,779 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 01:30:24,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:30:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:30:24,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:30:24,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:30:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:30:24,810 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 01:30:24,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:30:24,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:30:24,877 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-30 01:30:24,877 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 7 Second operand 4 states. [2020-11-30 01:30:24,918 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 35 states and 53 transitions. Complement of second has 7 states. [2020-11-30 01:30:24,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-30 01:30:24,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-30 01:30:24,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2020-11-30 01:30:24,920 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 3 letters. [2020-11-30 01:30:24,921 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:30:24,921 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 5 letters. Loop has 3 letters. [2020-11-30 01:30:24,921 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:30:24,921 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 6 letters. [2020-11-30 01:30:24,921 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:30:24,922 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 53 transitions. [2020-11-30 01:30:24,924 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 01:30:24,927 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 24 states and 35 transitions. [2020-11-30 01:30:24,927 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-11-30 01:30:24,928 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-11-30 01:30:24,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 35 transitions. [2020-11-30 01:30:24,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:30:24,928 INFO L691 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2020-11-30 01:30:24,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 35 transitions. [2020-11-30 01:30:24,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2020-11-30 01:30:24,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-30 01:30:24,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 31 transitions. [2020-11-30 01:30:24,937 INFO L714 BuchiCegarLoop]: Abstraction has 20 states and 31 transitions. [2020-11-30 01:30:24,937 INFO L594 BuchiCegarLoop]: Abstraction has 20 states and 31 transitions. [2020-11-30 01:30:24,937 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-30 01:30:24,937 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 31 transitions. [2020-11-30 01:30:24,940 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 01:30:24,940 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:30:24,940 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:30:24,942 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-30 01:30:24,942 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 01:30:24,942 INFO L794 eck$LassoCheckResult]: Stem: 152#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; 153#L15-2 assume !!(((main_~x~0 >= 0 && main_~y~0 < 2147483647 - main_~x~0) || (main_~x~0 < 0 && main_~y~0 > -2147483648 - main_~x~0)) && main_~x~0 + main_~y~0 > 0); 163#L12 assume !(main_~x~0 > 0); 147#L15 [2020-11-30 01:30:24,943 INFO L796 eck$LassoCheckResult]: Loop: 147#L15 assume !(main_~y~0 > 0); 148#L15-2 assume !!(((main_~x~0 >= 0 && main_~y~0 < 2147483647 - main_~x~0) || (main_~x~0 < 0 && main_~y~0 > -2147483648 - main_~x~0)) && main_~x~0 + main_~y~0 > 0); 154#L12 assume !(main_~x~0 > 0); 147#L15 [2020-11-30 01:30:24,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:30:24,943 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2020-11-30 01:30:24,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:30:24,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576397481] [2020-11-30 01:30:24,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:30:24,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:30:24,962 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:30:24,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:30:24,969 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:30:24,971 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:30:24,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:30:24,973 INFO L82 PathProgramCache]: Analyzing trace with hash 49336, now seen corresponding path program 1 times [2020-11-30 01:30:24,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:30:24,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358602790] [2020-11-30 01:30:24,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:30:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:30:25,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:30:25,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358602790] [2020-11-30 01:30:25,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:30:25,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:30:25,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058928255] [2020-11-30 01:30:25,028 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-30 01:30:25,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:30:25,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:30:25,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:30:25,032 INFO L87 Difference]: Start difference. First operand 20 states and 31 transitions. cyclomatic complexity: 15 Second operand 4 states. [2020-11-30 01:30:25,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:30:25,059 INFO L93 Difference]: Finished difference Result 22 states and 30 transitions. [2020-11-30 01:30:25,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:30:25,059 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 30 transitions. [2020-11-30 01:30:25,061 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 01:30:25,061 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2020-11-30 01:30:25,061 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-30 01:30:25,061 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-30 01:30:25,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-30 01:30:25,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 01:30:25,061 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:30:25,061 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:30:25,061 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:30:25,062 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-30 01:30:25,062 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-30 01:30:25,062 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 01:30:25,062 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-30 01:30:25,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 01:30:25 BoogieIcfgContainer [2020-11-30 01:30:25,068 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 01:30:25,068 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:30:25,068 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:30:25,069 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:30:25,069 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:30:22" (3/4) ... [2020-11-30 01:30:25,072 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 01:30:25,072 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:30:25,074 INFO L168 Benchmark]: Toolchain (without parser) took 3496.20 ms. Allocated memory was 86.0 MB in the beginning and 134.2 MB in the end (delta: 48.2 MB). Free memory was 56.1 MB in the beginning and 42.8 MB in the end (delta: 13.3 MB). Peak memory consumption was 62.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:30:25,074 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 86.0 MB. Free memory is still 43.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:30:25,075 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.45 ms. Allocated memory was 86.0 MB in the beginning and 134.2 MB in the end (delta: 48.2 MB). Free memory was 56.1 MB in the beginning and 113.6 MB in the end (delta: -57.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:30:25,076 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.16 ms. Allocated memory is still 134.2 MB. Free memory was 113.6 MB in the beginning and 111.8 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:30:25,076 INFO L168 Benchmark]: Boogie Preprocessor took 17.95 ms. Allocated memory is still 134.2 MB. Free memory was 111.8 MB in the beginning and 111.5 MB in the end (delta: 312.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:30:25,077 INFO L168 Benchmark]: RCFGBuilder took 264.43 ms. Allocated memory is still 134.2 MB. Free memory was 111.5 MB in the beginning and 102.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:30:25,078 INFO L168 Benchmark]: BuchiAutomizer took 2908.61 ms. Allocated memory is still 134.2 MB. Free memory was 102.2 MB in the beginning and 42.8 MB in the end (delta: 59.5 MB). Peak memory consumption was 61.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:30:25,078 INFO L168 Benchmark]: Witness Printer took 4.21 ms. Allocated memory is still 134.2 MB. Free memory is still 42.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:30:25,082 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 86.0 MB. Free memory is still 43.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 262.45 ms. Allocated memory was 86.0 MB in the beginning and 134.2 MB in the end (delta: 48.2 MB). Free memory was 56.1 MB in the beginning and 113.6 MB in the end (delta: -57.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.16 ms. Allocated memory is still 134.2 MB. Free memory was 113.6 MB in the beginning and 111.8 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.95 ms. Allocated memory is still 134.2 MB. Free memory was 111.8 MB in the beginning and 111.5 MB in the end (delta: 312.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 264.43 ms. Allocated memory is still 134.2 MB. Free memory was 111.5 MB in the beginning and 102.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2908.61 ms. Allocated memory is still 134.2 MB. Free memory was 102.2 MB in the beginning and 42.8 MB in the end (delta: 59.5 MB). Peak memory consumption was 61.4 MB. Max. memory is 16.1 GB. * Witness Printer took 4.21 ms. Allocated memory is still 134.2 MB. Free memory is still 42.8 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 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function y and consists of 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.8s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 2.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 20 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 16 SDtfs, 16 SDslu, 11 SDs, 0 SdLazy, 32 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital22 mio100 ax154 hnf98 lsp64 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq127 hnf96 smp100 dnf132 smp96 tf106 neg100 sie119 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 40ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...