./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/Log.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_179d425b-fe98-4c1b-baf8-0e59a76d87ce/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_179d425b-fe98-4c1b-baf8-0e59a76d87ce/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_179d425b-fe98-4c1b-baf8-0e59a76d87ce/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_179d425b-fe98-4c1b-baf8-0e59a76d87ce/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/Log.c -s /tmp/vcloud-vcloud-master/worker/run_dir_179d425b-fe98-4c1b-baf8-0e59a76d87ce/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_179d425b-fe98-4c1b-baf8-0e59a76d87ce/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 2d80b45a01c32727728c3a89e06c1e9a4dc4868b ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 01:10:51,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:10:51,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:10:51,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:10:51,164 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:10:51,165 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:10:51,169 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:10:51,175 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:10:51,178 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:10:51,179 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:10:51,181 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:10:51,182 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:10:51,183 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:10:51,185 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:10:51,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:10:51,188 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:10:51,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:10:51,191 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:10:51,193 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:10:51,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:10:51,198 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:10:51,200 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:10:51,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:10:51,203 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:10:51,215 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:10:51,216 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:10:51,216 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:10:51,217 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:10:51,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:10:51,219 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:10:51,220 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:10:51,221 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:10:51,222 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:10:51,223 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:10:51,224 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:10:51,225 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:10:51,226 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:10:51,226 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:10:51,227 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:10:51,232 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:10:51,234 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:10:51,236 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_179d425b-fe98-4c1b-baf8-0e59a76d87ce/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-30 01:10:51,279 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:10:51,280 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:10:51,282 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:10:51,282 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:10:51,282 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:10:51,282 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 01:10:51,282 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 01:10:51,283 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 01:10:51,283 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 01:10:51,283 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 01:10:51,284 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 01:10:51,285 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:10:51,285 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 01:10:51,285 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:10:51,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:10:51,286 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 01:10:51,286 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 01:10:51,286 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 01:10:51,286 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:10:51,286 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 01:10:51,287 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:10:51,287 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 01:10:51,287 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:10:51,287 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:10:51,288 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 01:10:51,288 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:10:51,288 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:10:51,288 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:10:51,289 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 01:10:51,290 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 01:10:51,290 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_179d425b-fe98-4c1b-baf8-0e59a76d87ce/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_179d425b-fe98-4c1b-baf8-0e59a76d87ce/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d80b45a01c32727728c3a89e06c1e9a4dc4868b [2020-11-30 01:10:51,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:10:51,596 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:10:51,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:10:51,603 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:10:51,604 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:10:51,605 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_179d425b-fe98-4c1b-baf8-0e59a76d87ce/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/Log.c [2020-11-30 01:10:51,683 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_179d425b-fe98-4c1b-baf8-0e59a76d87ce/bin/uautomizer/data/4acb14bbd/9648b2cf32fb4c76a6e8f3d787e50eb7/FLAG3c2080a3a [2020-11-30 01:10:52,112 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:10:52,112 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_179d425b-fe98-4c1b-baf8-0e59a76d87ce/sv-benchmarks/c/termination-restricted-15/Log.c [2020-11-30 01:10:52,118 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_179d425b-fe98-4c1b-baf8-0e59a76d87ce/bin/uautomizer/data/4acb14bbd/9648b2cf32fb4c76a6e8f3d787e50eb7/FLAG3c2080a3a [2020-11-30 01:10:52,529 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_179d425b-fe98-4c1b-baf8-0e59a76d87ce/bin/uautomizer/data/4acb14bbd/9648b2cf32fb4c76a6e8f3d787e50eb7 [2020-11-30 01:10:52,532 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:10:52,534 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:10:52,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:10:52,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:10:52,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:10:52,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:10:52" (1/1) ... [2020-11-30 01:10:52,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cc60016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:52, skipping insertion in model container [2020-11-30 01:10:52,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:10:52" (1/1) ... [2020-11-30 01:10:52,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:10:52,562 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:10:52,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:10:52,699 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:10:52,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:10:52,759 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:10:52,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:52 WrapperNode [2020-11-30 01:10:52,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:10:52,761 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:10:52,762 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:10:52,762 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:10:52,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:52" (1/1) ... [2020-11-30 01:10:52,774 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:52" (1/1) ... [2020-11-30 01:10:52,789 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:10:52,790 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:10:52,790 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:10:52,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:10:52,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:52" (1/1) ... [2020-11-30 01:10:52,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:52" (1/1) ... [2020-11-30 01:10:52,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:52" (1/1) ... [2020-11-30 01:10:52,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:52" (1/1) ... [2020-11-30 01:10:52,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:52" (1/1) ... [2020-11-30 01:10:52,805 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:52" (1/1) ... [2020-11-30 01:10:52,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:52" (1/1) ... [2020-11-30 01:10:52,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:10:52,808 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:10:52,808 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:10:52,808 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:10:52,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_179d425b-fe98-4c1b-baf8-0e59a76d87ce/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 01:10:52,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:10:52,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:10:53,008 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:10:53,009 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-30 01:10:53,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:10:53 BoogieIcfgContainer [2020-11-30 01:10:53,011 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:10:53,012 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 01:10:53,012 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 01:10:53,015 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 01:10:53,016 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:10:53,016 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 01:10:52" (1/3) ... [2020-11-30 01:10:53,018 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2b960da4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 01:10:53, skipping insertion in model container [2020-11-30 01:10:53,018 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:10:53,018 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:52" (2/3) ... [2020-11-30 01:10:53,019 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2b960da4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 01:10:53, skipping insertion in model container [2020-11-30 01:10:53,019 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:10:53,019 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:10:53" (3/3) ... [2020-11-30 01:10:53,021 INFO L373 chiAutomizerObserver]: Analyzing ICFG Log.c [2020-11-30 01:10:53,070 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 01:10:53,070 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 01:10:53,070 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 01:10:53,071 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:10:53,071 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:10:53,071 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 01:10:53,071 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:10:53,071 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 01:10:53,084 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-30 01:10:53,101 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 01:10:53,101 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:10:53,101 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:10:53,108 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-30 01:10:53,108 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 01:10:53,108 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 01:10:53,108 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-30 01:10:53,109 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 01:10:53,110 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:10:53,110 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:10:53,110 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-30 01:10:53,110 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 01:10:53,118 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~xtmp~0, main_~res~0, main_~restmp~0;havoc main_~x~0;havoc main_~xtmp~0;havoc main_~res~0;havoc main_~restmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~res~0 := 0; 6#L13-2true [2020-11-30 01:10:53,118 INFO L796 eck$LassoCheckResult]: Loop: 6#L13-2true assume !!(main_~x~0 > 1);main_~xtmp~0 := main_~x~0;main_~restmp~0 := 0; 3#L17-2true assume !(main_~xtmp~0 > 1); 10#L17-3true main_~x~0 := main_~xtmp~0;main_~res~0 := 1 + main_~res~0; 6#L13-2true [2020-11-30 01:10:53,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:53,125 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-30 01:10:53,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:10:53,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369802765] [2020-11-30 01:10:53,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:10:53,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:53,213 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:53,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:53,218 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:53,233 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:10:53,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:53,235 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2020-11-30 01:10:53,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:10:53,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684082573] [2020-11-30 01:10:53,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:10:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:10:53,351 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 01:10:53,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684082573] [2020-11-30 01:10:53,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:10:53,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:10:53,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327811174] [2020-11-30 01:10:53,362 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-30 01:10:53,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:10:53,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:10:53,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:10:53,391 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 3 states. [2020-11-30 01:10:53,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:10:53,434 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2020-11-30 01:10:53,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:10:53,437 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2020-11-30 01:10:53,438 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-30 01:10:53,441 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 5 states and 6 transitions. [2020-11-30 01:10:53,442 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-11-30 01:10:53,443 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-11-30 01:10:53,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 6 transitions. [2020-11-30 01:10:53,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 01:10:53,444 INFO L691 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2020-11-30 01:10:53,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states and 6 transitions. [2020-11-30 01:10:53,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2020-11-30 01:10:53,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-30 01:10:53,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 6 transitions. [2020-11-30 01:10:53,491 INFO L714 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2020-11-30 01:10:53,492 INFO L594 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2020-11-30 01:10:53,492 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 01:10:53,492 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 6 transitions. [2020-11-30 01:10:53,492 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-30 01:10:53,493 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:10:53,493 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:10:53,493 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-30 01:10:53,493 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-30 01:10:53,493 INFO L794 eck$LassoCheckResult]: Stem: 28#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~xtmp~0, main_~res~0, main_~restmp~0;havoc main_~x~0;havoc main_~xtmp~0;havoc main_~res~0;havoc main_~restmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~res~0 := 0; 29#L13-2 [2020-11-30 01:10:53,494 INFO L796 eck$LassoCheckResult]: Loop: 29#L13-2 assume !!(main_~x~0 > 1);main_~xtmp~0 := main_~x~0;main_~restmp~0 := 0; 26#L17-2 assume !!(main_~xtmp~0 > 1);main_~xtmp~0 := main_~xtmp~0 - 2;main_~restmp~0 := 1 + main_~restmp~0; 27#L17-2 assume !(main_~xtmp~0 > 1); 30#L17-3 main_~x~0 := main_~xtmp~0;main_~res~0 := 1 + main_~res~0; 29#L13-2 [2020-11-30 01:10:53,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:53,495 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2020-11-30 01:10:53,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:10:53,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041716015] [2020-11-30 01:10:53,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:10:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:53,517 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:53,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:53,520 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:53,521 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:10:53,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:53,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1240240, now seen corresponding path program 1 times [2020-11-30 01:10:53,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:10:53,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263186041] [2020-11-30 01:10:53,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:10:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:53,551 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:53,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:53,574 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:53,576 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:10:53,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:53,578 INFO L82 PathProgramCache]: Analyzing trace with hash 29869391, now seen corresponding path program 1 times [2020-11-30 01:10:53,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:10:53,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107301574] [2020-11-30 01:10:53,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:10:53,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:53,596 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:53,617 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:53,619 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:10:53,738 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 24 [2020-11-30 01:10:53,809 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:10:53,810 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:10:53,811 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:10:53,811 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:10:53,811 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 01:10:53,811 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:53,812 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:10:53,812 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:10:53,812 INFO L133 ssoRankerPreferences]: Filename of dumped script: Log.c_Iteration2_Loop [2020-11-30 01:10:53,812 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:10:53,813 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:10:53,834 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 01:10:53,853 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 01:10:53,861 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 01:10:53,872 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 01:10:53,880 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 01:10:54,046 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:10:54,047 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_179d425b-fe98-4c1b-baf8-0e59a76d87ce/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 [2020-11-30 01:10:54,058 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:10:54,058 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:10:54,066 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:10:54,066 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_179d425b-fe98-4c1b-baf8-0e59a76d87ce/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 01:10:54,096 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:10:54,096 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:10:54,099 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:10:54,099 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_179d425b-fe98-4c1b-baf8-0e59a76d87ce/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 01:10:54,145 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:10:54,145 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 [2020-11-30 01:10:54,152 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:10:54,152 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~restmp~0=1} Honda state: {ULTIMATE.start_main_~restmp~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_179d425b-fe98-4c1b-baf8-0e59a76d87ce/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) [2020-11-30 01:10:54,183 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:10:54,183 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 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_179d425b-fe98-4c1b-baf8-0e59a76d87ce/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:54,223 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 01:10:54,223 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:10:54,244 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:10:54,245 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~res~0=0} Honda state: {ULTIMATE.start_main_~res~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~res~0=-5}, {ULTIMATE.start_main_~res~0=6}, {ULTIMATE.start_main_~res~0=0}] Lambdas: [1, 1, 0] Nus: [0, 1] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_179d425b-fe98-4c1b-baf8-0e59a76d87ce/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 01:10:54,293 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:10:54,293 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_179d425b-fe98-4c1b-baf8-0e59a76d87ce/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 01:10:54,342 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 01:10:54,342 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:55,297 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 01:10:55,298 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:10:55,299 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:10:55,299 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:10:55,299 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:10:55,299 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:10:55,299 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:55,299 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:10:55,299 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:10:55,299 INFO L133 ssoRankerPreferences]: Filename of dumped script: Log.c_Iteration2_Loop [2020-11-30 01:10:55,299 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:10:55,299 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:10:55,301 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 01:10:55,307 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 01:10:55,314 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 01:10:55,318 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 01:10:55,334 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 01:10:55,437 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:10:55,443 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_179d425b-fe98-4c1b-baf8-0e59a76d87ce/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 01:10:55,449 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 01:10:55,453 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:55,454 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:55,454 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:55,454 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:55,463 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:10:55,463 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:55,472 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_179d425b-fe98-4c1b-baf8-0e59a76d87ce/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 [2020-11-30 01:10:55,506 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 01:10:55,508 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:55,508 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:55,508 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:55,508 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:55,516 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:10:55,516 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:10:55,520 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_179d425b-fe98-4c1b-baf8-0e59a76d87ce/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 01:10:55,557 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:55,559 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:55,559 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:10:55,560 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:55,560 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:55,560 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:55,561 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:10:55,561 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:10:55,562 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_179d425b-fe98-4c1b-baf8-0e59a76d87ce/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 [2020-11-30 01:10:55,585 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 01:10:55,586 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:55,586 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:10:55,587 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:55,587 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:55,587 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:55,589 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:10:55,589 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:10:55,596 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:10:55,601 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 01:10:55,601 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_179d425b-fe98-4c1b-baf8-0e59a76d87ce/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 01:10:55,621 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 01:10:55,622 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 01:10:55,622 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:10:55,622 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-11-30 01:10:55,666 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:55,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:55,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:10:55,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:10:55,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:10:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:10:55,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 01:10:55,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:10:55,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 01:10:55,798 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 01:10:55,799 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 5 states and 6 transitions. cyclomatic complexity: 2 Second operand 4 states. [2020-11-30 01:10:55,876 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 5 states and 6 transitions. cyclomatic complexity: 2. Second operand 4 states. Result 9 states and 12 transitions. Complement of second has 6 states. [2020-11-30 01:10:55,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-30 01:10:55,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-30 01:10:55,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 5 transitions. [2020-11-30 01:10:55,881 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 1 letters. Loop has 4 letters. [2020-11-30 01:10:55,881 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:10:55,881 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 5 letters. Loop has 4 letters. [2020-11-30 01:10:55,882 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:10:55,882 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 1 letters. Loop has 8 letters. [2020-11-30 01:10:55,882 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:10:55,882 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 12 transitions. [2020-11-30 01:10:55,883 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-30 01:10:55,884 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 8 states and 11 transitions. [2020-11-30 01:10:55,884 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-11-30 01:10:55,884 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-11-30 01:10:55,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2020-11-30 01:10:55,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:10:55,884 INFO L691 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2020-11-30 01:10:55,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2020-11-30 01:10:55,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2020-11-30 01:10:55,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-30 01:10:55,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2020-11-30 01:10:55,886 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-11-30 01:10:55,886 INFO L594 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-11-30 01:10:55,886 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-30 01:10:55,886 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2020-11-30 01:10:55,886 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-30 01:10:55,886 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:10:55,887 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:10:55,887 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-30 01:10:55,887 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-30 01:10:55,887 INFO L794 eck$LassoCheckResult]: Stem: 84#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~xtmp~0, main_~res~0, main_~restmp~0;havoc main_~x~0;havoc main_~xtmp~0;havoc main_~res~0;havoc main_~restmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~res~0 := 0; 85#L13-2 assume !!(main_~x~0 > 1);main_~xtmp~0 := main_~x~0;main_~restmp~0 := 0; 81#L17-2 [2020-11-30 01:10:55,887 INFO L796 eck$LassoCheckResult]: Loop: 81#L17-2 assume !!(main_~xtmp~0 > 1);main_~xtmp~0 := main_~xtmp~0 - 2;main_~restmp~0 := 1 + main_~restmp~0; 81#L17-2 [2020-11-30 01:10:55,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:55,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-11-30 01:10:55,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:10:55,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114146715] [2020-11-30 01:10:55,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:10:55,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:55,904 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:55,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:55,918 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:55,919 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:10:55,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:55,921 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2020-11-30 01:10:55,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:10:55,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706775680] [2020-11-30 01:10:55,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:10:55,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:55,934 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:55,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:55,939 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:55,940 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:10:55,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:55,942 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2020-11-30 01:10:55,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:10:55,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608991650] [2020-11-30 01:10:55,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:10:55,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:55,951 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:55,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:55,964 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:55,966 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:10:55,983 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:10:55,983 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:10:55,983 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:10:55,984 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:10:55,984 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 01:10:55,984 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:55,984 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:10:55,984 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:10:55,984 INFO L133 ssoRankerPreferences]: Filename of dumped script: Log.c_Iteration3_Loop [2020-11-30 01:10:55,984 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:10:55,984 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:10:55,986 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 01:10:55,991 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 01:10:55,996 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 01:10:56,003 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 01:10:56,080 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:10:56,080 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_179d425b-fe98-4c1b-baf8-0e59a76d87ce/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) [2020-11-30 01:10:56,085 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:10:56,086 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:56,090 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:10:56,090 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_179d425b-fe98-4c1b-baf8-0e59a76d87ce/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:10:56,130 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:10:56,130 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_179d425b-fe98-4c1b-baf8-0e59a76d87ce/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:10:56,176 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 01:10:56,177 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:56,195 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:10:56,195 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~restmp~0=0} Honda state: {ULTIMATE.start_main_~restmp~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~restmp~0=-3}, {ULTIMATE.start_main_~restmp~0=-1}, {ULTIMATE.start_main_~restmp~0=5}] Lambdas: [1, 6, 1] Nus: [0, 1] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_179d425b-fe98-4c1b-baf8-0e59a76d87ce/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:10:56,238 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:10:56,238 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:56,242 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:10:56,242 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_179d425b-fe98-4c1b-baf8-0e59a76d87ce/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 [2020-11-30 01:10:56,287 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:10:56,287 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_179d425b-fe98-4c1b-baf8-0e59a76d87ce/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 [2020-11-30 01:10:56,318 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 01:10:56,319 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:10:56,345 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 01:10:56,346 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:10:56,347 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:10:56,347 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:10:56,347 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:10:56,347 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:10:56,347 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:56,347 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:10:56,347 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:10:56,347 INFO L133 ssoRankerPreferences]: Filename of dumped script: Log.c_Iteration3_Loop [2020-11-30 01:10:56,347 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:10:56,347 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:10:56,348 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 01:10:56,352 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 01:10:56,359 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 01:10:56,362 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 01:10:56,422 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:10:56,422 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_179d425b-fe98-4c1b-baf8-0e59a76d87ce/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) [2020-11-30 01:10:56,445 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 01:10:56,447 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:56,447 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:56,447 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:56,447 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:56,450 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:10:56,451 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 [2020-11-30 01:10:56,455 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_179d425b-fe98-4c1b-baf8-0e59a76d87ce/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:10:56,504 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 01:10:56,505 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:56,506 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:10:56,506 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:56,506 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:56,506 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:56,507 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:10:56,507 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:56,510 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_179d425b-fe98-4c1b-baf8-0e59a76d87ce/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:56,546 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 01:10:56,548 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:56,548 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:56,548 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:56,548 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:56,551 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:10:56,551 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:10:56,559 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_179d425b-fe98-4c1b-baf8-0e59a76d87ce/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:56,583 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 01:10:56,585 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:56,585 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:10:56,592 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:56,592 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:56,592 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:56,594 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:10:56,594 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:10:56,596 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:10:56,599 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 01:10:56,599 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_179d425b-fe98-4c1b-baf8-0e59a76d87ce/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:10:56,602 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 01:10:56,602 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 01:10:56,602 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:10:56,602 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0) = 1*ULTIMATE.start_main_~xtmp~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:56,625 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 01:10:56,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:56,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:10:56,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:10:56,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:10:56,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:10:56,666 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:10:56,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:10:56,667 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 01:10:56,667 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 01:10:56,668 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 2 states. [2020-11-30 01:10:56,689 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 15 states and 20 transitions. Complement of second has 5 states. [2020-11-30 01:10:56,691 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 [2020-11-30 01:10:56,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-30 01:10:56,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2020-11-30 01:10:56,691 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 1 letters. [2020-11-30 01:10:56,692 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:10:56,692 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2020-11-30 01:10:56,692 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:10:56,692 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2020-11-30 01:10:56,692 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:10:56,692 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 20 transitions. [2020-11-30 01:10:56,693 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-30 01:10:56,694 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 11 states and 15 transitions. [2020-11-30 01:10:56,694 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-11-30 01:10:56,694 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2020-11-30 01:10:56,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 15 transitions. [2020-11-30 01:10:56,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:10:56,695 INFO L691 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2020-11-30 01:10:56,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 15 transitions. [2020-11-30 01:10:56,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 7. [2020-11-30 01:10:56,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-30 01:10:56,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2020-11-30 01:10:56,696 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2020-11-30 01:10:56,696 INFO L594 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2020-11-30 01:10:56,696 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-30 01:10:56,696 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2020-11-30 01:10:56,697 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-30 01:10:56,697 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:10:56,697 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:10:56,697 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2020-11-30 01:10:56,697 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-30 01:10:56,697 INFO L794 eck$LassoCheckResult]: Stem: 135#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~xtmp~0, main_~res~0, main_~restmp~0;havoc main_~x~0;havoc main_~xtmp~0;havoc main_~res~0;havoc main_~restmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~res~0 := 0; 136#L13-2 assume !!(main_~x~0 > 1);main_~xtmp~0 := main_~x~0;main_~restmp~0 := 0; 133#L17-2 assume !!(main_~xtmp~0 > 1);main_~xtmp~0 := main_~xtmp~0 - 2;main_~restmp~0 := 1 + main_~restmp~0; 134#L17-2 assume !(main_~xtmp~0 > 1); 138#L17-3 main_~x~0 := main_~xtmp~0;main_~res~0 := 1 + main_~res~0; 137#L13-2 assume !!(main_~x~0 > 1);main_~xtmp~0 := main_~x~0;main_~restmp~0 := 0; 132#L17-2 [2020-11-30 01:10:56,698 INFO L796 eck$LassoCheckResult]: Loop: 132#L17-2 assume !!(main_~xtmp~0 > 1);main_~xtmp~0 := main_~xtmp~0 - 2;main_~restmp~0 := 1 + main_~restmp~0; 132#L17-2 [2020-11-30 01:10:56,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:56,698 INFO L82 PathProgramCache]: Analyzing trace with hash 925951131, now seen corresponding path program 2 times [2020-11-30 01:10:56,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:10:56,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973432580] [2020-11-30 01:10:56,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:10:56,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:10:56,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 01:10:56,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973432580] [2020-11-30 01:10:56,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:10:56,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:10:56,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141960715] [2020-11-30 01:10:56,764 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-30 01:10:56,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:56,765 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2020-11-30 01:10:56,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:10:56,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313205450] [2020-11-30 01:10:56,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:10:56,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:56,769 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:56,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:56,772 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:56,773 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:10:56,788 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:10:56,788 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:10:56,788 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:10:56,789 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:10:56,789 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 01:10:56,789 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:56,789 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:10:56,789 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:10:56,789 INFO L133 ssoRankerPreferences]: Filename of dumped script: Log.c_Iteration4_Loop [2020-11-30 01:10:56,789 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:10:56,789 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:10:56,791 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 01:10:56,797 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:56,804 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 01:10:56,808 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 01:10:56,867 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:10:56,867 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_179d425b-fe98-4c1b-baf8-0e59a76d87ce/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:56,876 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:10:56,876 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:10:56,880 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:10:56,880 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_179d425b-fe98-4c1b-baf8-0e59a76d87ce/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:56,905 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:10:56,905 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_179d425b-fe98-4c1b-baf8-0e59a76d87ce/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:56,929 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 01:10:56,929 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:10:56,964 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 01:10:56,965 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:10:56,965 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:10:56,966 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:10:56,966 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:10:56,966 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:10:56,966 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:56,966 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:10:56,966 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:10:56,966 INFO L133 ssoRankerPreferences]: Filename of dumped script: Log.c_Iteration4_Loop [2020-11-30 01:10:56,966 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:10:56,966 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:10:56,967 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:10:56,971 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 01:10:56,976 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 01:10:56,980 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 01:10:57,040 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:10:57,041 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_179d425b-fe98-4c1b-baf8-0e59a76d87ce/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:10:57,049 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 01:10:57,050 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:57,050 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:57,051 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:57,051 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:57,053 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:10:57,053 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:57,057 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_179d425b-fe98-4c1b-baf8-0e59a76d87ce/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:10:57,095 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 01:10:57,096 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:10:57,096 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:10:57,097 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:10:57,097 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:10:57,097 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:10:57,098 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:10:57,098 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:57,101 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:10:57,104 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 01:10:57,104 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_179d425b-fe98-4c1b-baf8-0e59a76d87ce/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:10:57,107 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 01:10:57,107 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 01:10:57,108 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:10:57,108 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0) = 1*ULTIMATE.start_main_~xtmp~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:10:57,137 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 01:10:57,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:57,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:10:57,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:10:57,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:10:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:10:57,182 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:10:57,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:10:57,182 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 01:10:57,183 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 01:10:57,183 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 2 states. [2020-11-30 01:10:57,201 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 13 states and 17 transitions. Complement of second has 5 states. [2020-11-30 01:10:57,202 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 [2020-11-30 01:10:57,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-30 01:10:57,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2020-11-30 01:10:57,202 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 6 letters. Loop has 1 letters. [2020-11-30 01:10:57,203 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:10:57,203 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 01:10:57,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:57,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:10:57,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:10:57,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:10:57,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:10:57,231 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:10:57,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:10:57,231 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 01:10:57,232 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 [2020-11-30 01:10:57,232 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 2 states. [2020-11-30 01:10:57,245 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 13 states and 17 transitions. Complement of second has 5 states. [2020-11-30 01:10:57,247 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 [2020-11-30 01:10:57,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-30 01:10:57,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2020-11-30 01:10:57,248 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 6 letters. Loop has 1 letters. [2020-11-30 01:10:57,248 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:10:57,248 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 01:10:57,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:57,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:10:57,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:10:57,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:10:57,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:10:57,279 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:10:57,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:10:57,279 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 01:10:57,280 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 [2020-11-30 01:10:57,280 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 2 states. [2020-11-30 01:10:57,296 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 10 states and 12 transitions. Complement of second has 4 states. [2020-11-30 01:10:57,298 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 [2020-11-30 01:10:57,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-30 01:10:57,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-11-30 01:10:57,299 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 1 letters. [2020-11-30 01:10:57,299 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:10:57,300 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 1 letters. [2020-11-30 01:10:57,300 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:10:57,300 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 2 letters. [2020-11-30 01:10:57,300 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:10:57,300 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2020-11-30 01:10:57,301 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 01:10:57,301 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2020-11-30 01:10:57,301 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-30 01:10:57,301 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-30 01:10:57,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-30 01:10:57,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 01:10:57,302 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:10:57,302 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:10:57,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:10:57,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:10:57,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:10:57,303 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 4 states. [2020-11-30 01:10:57,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:10:57,303 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-11-30 01:10:57,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:10:57,303 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-11-30 01:10:57,303 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 01:10:57,303 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 01:10:57,303 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-30 01:10:57,303 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-30 01:10:57,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-30 01:10:57,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 01:10:57,304 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:10:57,304 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:10:57,304 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:10:57,304 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-30 01:10:57,304 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-30 01:10:57,304 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 01:10:57,304 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-30 01:10:57,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 01:10:57 BoogieIcfgContainer [2020-11-30 01:10:57,311 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 01:10:57,312 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:10:57,312 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:10:57,312 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:10:57,313 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:10:53" (3/4) ... [2020-11-30 01:10:57,315 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 01:10:57,315 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:10:57,317 INFO L168 Benchmark]: Toolchain (without parser) took 4782.34 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 81.4 MB in the beginning and 46.5 MB in the end (delta: 34.9 MB). Peak memory consumption was 58.8 MB. Max. memory is 16.1 GB. [2020-11-30 01:10:57,318 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 109.1 MB. Free memory was 66.7 MB in the beginning and 66.6 MB in the end (delta: 47.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:10:57,319 INFO L168 Benchmark]: CACSL2BoogieTranslator took 224.88 ms. Allocated memory is still 109.1 MB. Free memory was 81.4 MB in the beginning and 87.0 MB in the end (delta: -5.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:10:57,324 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.75 ms. Allocated memory is still 109.1 MB. Free memory was 87.0 MB in the beginning and 85.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:10:57,325 INFO L168 Benchmark]: Boogie Preprocessor took 17.19 ms. Allocated memory is still 109.1 MB. Free memory was 85.8 MB in the beginning and 85.0 MB in the end (delta: 754.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:10:57,326 INFO L168 Benchmark]: RCFGBuilder took 203.06 ms. Allocated memory is still 109.1 MB. Free memory was 85.0 MB in the beginning and 76.7 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:10:57,326 INFO L168 Benchmark]: BuchiAutomizer took 4299.70 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 76.7 MB in the beginning and 46.5 MB in the end (delta: 30.2 MB). Peak memory consumption was 56.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:10:57,327 INFO L168 Benchmark]: Witness Printer took 3.83 ms. Allocated memory is still 132.1 MB. Free memory is still 46.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:10:57,338 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 109.1 MB. Free memory was 66.7 MB in the beginning and 66.6 MB in the end (delta: 47.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 224.88 ms. Allocated memory is still 109.1 MB. Free memory was 81.4 MB in the beginning and 87.0 MB in the end (delta: -5.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 27.75 ms. Allocated memory is still 109.1 MB. Free memory was 87.0 MB in the beginning and 85.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.19 ms. Allocated memory is still 109.1 MB. Free memory was 85.8 MB in the beginning and 85.0 MB in the end (delta: 754.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 203.06 ms. Allocated memory is still 109.1 MB. Free memory was 85.0 MB in the beginning and 76.7 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 4299.70 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 76.7 MB in the beginning and 46.5 MB in the end (delta: 30.2 MB). Peak memory consumption was 56.1 MB. Max. memory is 16.1 GB. * Witness Printer took 3.83 ms. Allocated memory is still 132.1 MB. Free memory is still 46.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function xtmp and consists of 3 locations. One nondeterministic module has affine ranking function xtmp and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.2s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 3.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 26 SDtfs, 21 SDslu, 6 SDs, 0 SdLazy, 35 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax167 hnf97 lsp40 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq158 hnf93 smp100 dnf100 smp100 tf111 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 28ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...