./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/MinusUserDefined.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_b4696432-d6b3-40d0-bb07-42426ff1b3e4/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b4696432-d6b3-40d0-bb07-42426ff1b3e4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b4696432-d6b3-40d0-bb07-42426ff1b3e4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b4696432-d6b3-40d0-bb07-42426ff1b3e4/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/MinusUserDefined.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b4696432-d6b3-40d0-bb07-42426ff1b3e4/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b4696432-d6b3-40d0-bb07-42426ff1b3e4/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 2e63fdedc7f36bfa4d0d39679a5a7ea76cc5ddf1 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:16:29,756 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:16:29,758 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:16:29,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:16:29,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:16:29,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:16:29,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:16:29,807 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:16:29,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:16:29,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:16:29,812 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:16:29,814 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:16:29,814 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:16:29,816 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:16:29,817 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:16:29,818 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:16:29,820 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:16:29,822 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:16:29,824 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:16:29,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:16:29,833 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:16:29,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:16:29,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:16:29,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:16:29,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:16:29,845 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:16:29,846 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:16:29,848 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:16:29,848 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:16:29,855 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:16:29,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:16:29,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:16:29,858 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:16:29,860 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:16:29,861 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:16:29,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:16:29,863 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:16:29,863 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:16:29,863 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:16:29,864 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:16:29,865 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:16:29,867 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b4696432-d6b3-40d0-bb07-42426ff1b3e4/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-28 03:16:29,908 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:16:29,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:16:29,910 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:16:29,910 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:16:29,910 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:16:29,911 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 03:16:29,911 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 03:16:29,911 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 03:16:29,911 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 03:16:29,911 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 03:16:29,912 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 03:16:29,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:16:29,913 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:16:29,913 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:16:29,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:16:29,914 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 03:16:29,914 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 03:16:29,914 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 03:16:29,914 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:16:29,914 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 03:16:29,915 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:16:29,915 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 03:16:29,915 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:16:29,915 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:16:29,916 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 03:16:29,916 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:16:29,916 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:16:29,916 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:16:29,917 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 03:16:29,919 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 03:16:29,919 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_b4696432-d6b3-40d0-bb07-42426ff1b3e4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b4696432-d6b3-40d0-bb07-42426ff1b3e4/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e63fdedc7f36bfa4d0d39679a5a7ea76cc5ddf1 [2020-11-28 03:16:30,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:16:30,214 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:16:30,216 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:16:30,217 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:16:30,217 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:16:30,218 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b4696432-d6b3-40d0-bb07-42426ff1b3e4/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/MinusUserDefined.c [2020-11-28 03:16:30,330 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b4696432-d6b3-40d0-bb07-42426ff1b3e4/bin/uautomizer/data/911b76195/dcecf03f04d74681a4f48f8f4e12280b/FLAGe56ef6b1e [2020-11-28 03:16:30,747 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:16:30,748 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b4696432-d6b3-40d0-bb07-42426ff1b3e4/sv-benchmarks/c/termination-restricted-15/MinusUserDefined.c [2020-11-28 03:16:30,753 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b4696432-d6b3-40d0-bb07-42426ff1b3e4/bin/uautomizer/data/911b76195/dcecf03f04d74681a4f48f8f4e12280b/FLAGe56ef6b1e [2020-11-28 03:16:31,156 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b4696432-d6b3-40d0-bb07-42426ff1b3e4/bin/uautomizer/data/911b76195/dcecf03f04d74681a4f48f8f4e12280b [2020-11-28 03:16:31,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:16:31,160 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:16:31,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:16:31,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:16:31,166 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:16:31,167 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:16:31" (1/1) ... [2020-11-28 03:16:31,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18a03bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:31, skipping insertion in model container [2020-11-28 03:16:31,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:16:31" (1/1) ... [2020-11-28 03:16:31,177 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:16:31,192 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:16:31,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:16:31,341 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:16:31,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:16:31,396 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:16:31,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:31 WrapperNode [2020-11-28 03:16:31,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:16:31,399 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:16:31,399 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:16:31,400 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:16:31,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:31" (1/1) ... [2020-11-28 03:16:31,415 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:31" (1/1) ... [2020-11-28 03:16:31,436 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:16:31,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:16:31,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:16:31,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:16:31,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:31" (1/1) ... [2020-11-28 03:16:31,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:31" (1/1) ... [2020-11-28 03:16:31,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:31" (1/1) ... [2020-11-28 03:16:31,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:31" (1/1) ... [2020-11-28 03:16:31,454 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:31" (1/1) ... [2020-11-28 03:16:31,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:31" (1/1) ... [2020-11-28 03:16:31,466 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:31" (1/1) ... [2020-11-28 03:16:31,478 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:16:31,479 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:16:31,479 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:16:31,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:16:31,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b4696432-d6b3-40d0-bb07-42426ff1b3e4/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:31,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:16:31,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:16:31,672 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:16:31,672 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-28 03:16:31,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:31 BoogieIcfgContainer [2020-11-28 03:16:31,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:16:31,674 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 03:16:31,674 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 03:16:31,677 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 03:16:31,678 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:16:31,678 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 03:16:31" (1/3) ... [2020-11-28 03:16:31,679 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6a9c2bc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:16:31, skipping insertion in model container [2020-11-28 03:16:31,680 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:16:31,680 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:31" (2/3) ... [2020-11-28 03:16:31,680 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6a9c2bc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:16:31, skipping insertion in model container [2020-11-28 03:16:31,680 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:16:31,680 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:31" (3/3) ... [2020-11-28 03:16:31,682 INFO L373 chiAutomizerObserver]: Analyzing ICFG MinusUserDefined.c [2020-11-28 03:16:31,727 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 03:16:31,727 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 03:16:31,727 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 03:16:31,728 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:16:31,728 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:16:31,728 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 03:16:31,728 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:16:31,728 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 03:16:31,740 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-28 03:16:31,756 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2020-11-28 03:16:31,756 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:16:31,756 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:16:31,761 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-28 03:16:31,762 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 03:16:31,762 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 03:16:31,762 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-28 03:16:31,763 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2020-11-28 03:16:31,763 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:16:31,763 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:16:31,763 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-28 03:16:31,764 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 03:16:31,770 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 4#L13-2true [2020-11-28 03:16:31,771 INFO L796 eck$LassoCheckResult]: Loop: 4#L13-2true assume !!(main_~x~0 > 0 && main_~y~0 > 0);main_~x~0 := main_~x~0 - 1;main_~y~0 := main_~y~0 - 1; 4#L13-2true [2020-11-28 03:16:31,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:31,777 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-28 03:16:31,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:31,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097618842] [2020-11-28 03:16:31,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:31,859 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:31,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:31,863 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:31,877 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:16:31,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:31,879 INFO L82 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2020-11-28 03:16:31,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:31,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009137425] [2020-11-28 03:16:31,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:31,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:31,888 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:31,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:31,892 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:31,894 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:16:31,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:31,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-11-28 03:16:31,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:31,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62104124] [2020-11-28 03:16:31,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:31,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:31,904 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:31,910 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:31,912 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:16:32,034 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-11-28 03:16:32,103 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:16:32,103 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:16:32,104 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:16:32,104 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:16:32,104 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:16:32,104 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:32,104 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:16:32,104 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:16:32,104 INFO L133 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined.c_Iteration1_Loop [2020-11-28 03:16:32,105 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:16:32,105 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:16:32,125 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:32,142 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:32,148 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:32,155 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:32,266 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:16:32,270 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b4696432-d6b3-40d0-bb07-42426ff1b3e4/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:16:32,291 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:16:32,291 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b4696432-d6b3-40d0-bb07-42426ff1b3e4/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:32,325 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:16:32,325 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:16:32,370 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:16:32,371 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:16:32,371 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:16:32,371 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:16:32,371 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:16:32,371 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:16:32,372 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:32,372 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:16:32,372 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:16:32,372 INFO L133 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined.c_Iteration1_Loop [2020-11-28 03:16:32,372 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:16:32,372 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:16:32,374 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:32,400 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:32,406 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:32,412 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:32,567 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-11-28 03:16:32,677 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:16:32,684 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b4696432-d6b3-40d0-bb07-42426ff1b3e4/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) [2020-11-28 03:16:32,689 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:16:32,695 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:16:32,695 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:16:32,695 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:16:32,696 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:16:32,696 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:16:32,700 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:16:32,701 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:32,706 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:16:32,714 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:16:32,714 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_b4696432-d6b3-40d0-bb07-42426ff1b3e4/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:16:32,723 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:16:32,724 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:16:32,724 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:16:32,725 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:32,763 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:16:32,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:32,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:32,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:16:32,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:32,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:32,819 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:16:32,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:32,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:32,835 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-28 03:16:32,836 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 2 states. [2020-11-28 03:16:32,897 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 2 states. Result 23 states and 39 transitions. Complement of second has 5 states. [2020-11-28 03:16:32,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:16:32,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-28 03:16:32,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2020-11-28 03:16:32,901 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 1 letters. Loop has 1 letters. [2020-11-28 03:16:32,902 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:16:32,902 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 2 letters. Loop has 1 letters. [2020-11-28 03:16:32,902 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:16:32,902 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 1 letters. Loop has 2 letters. [2020-11-28 03:16:32,903 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:16:32,903 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 39 transitions. [2020-11-28 03:16:32,906 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 03:16:32,910 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 9 states and 16 transitions. [2020-11-28 03:16:32,911 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-11-28 03:16:32,912 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-11-28 03:16:32,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 16 transitions. [2020-11-28 03:16:32,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:16:32,913 INFO L691 BuchiCegarLoop]: Abstraction has 9 states and 16 transitions. [2020-11-28 03:16:32,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 16 transitions. [2020-11-28 03:16:32,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2020-11-28 03:16:32,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-28 03:16:32,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 15 transitions. [2020-11-28 03:16:32,938 INFO L714 BuchiCegarLoop]: Abstraction has 8 states and 15 transitions. [2020-11-28 03:16:32,938 INFO L594 BuchiCegarLoop]: Abstraction has 8 states and 15 transitions. [2020-11-28 03:16:32,939 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-28 03:16:32,939 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 15 transitions. [2020-11-28 03:16:32,940 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 03:16:32,940 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:16:32,940 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:16:32,940 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-28 03:16:32,940 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 03:16:32,941 INFO L794 eck$LassoCheckResult]: Stem: 60#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 61#L13-2 assume !(main_~x~0 > 0 && main_~y~0 > 0); 63#L21-3 [2020-11-28 03:16:32,941 INFO L796 eck$LassoCheckResult]: Loop: 63#L21-3 assume !!(main_~x~0 > 0);main_~y~0 := 1 + main_~y~0;main_~res~0 := 1 + main_~res~0; 65#L21-2 assume !(main_~x~0 > 0 && main_~y~0 > 0); 63#L21-3 [2020-11-28 03:16:32,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:32,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1000, now seen corresponding path program 1 times [2020-11-28 03:16:32,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:32,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786737291] [2020-11-28 03:16:32,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:32,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:32,948 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:32,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:32,951 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:32,953 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:16:32,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:32,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1640, now seen corresponding path program 1 times [2020-11-28 03:16:32,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:32,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831966027] [2020-11-28 03:16:32,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:32,962 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:32,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:32,965 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:32,967 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:16:32,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:32,968 INFO L82 PathProgramCache]: Analyzing trace with hash 961679, now seen corresponding path program 1 times [2020-11-28 03:16:32,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:32,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252180089] [2020-11-28 03:16:32,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:32,974 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:32,980 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:32,985 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:16:33,037 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:16:33,037 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:16:33,037 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:16:33,038 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:16:33,038 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:16:33,038 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:33,038 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:16:33,038 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:16:33,038 INFO L133 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined.c_Iteration2_Loop [2020-11-28 03:16:33,038 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:16:33,038 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:16:33,040 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:33,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:33,060 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:33,065 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:33,069 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:33,200 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:16:33,200 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b4696432-d6b3-40d0-bb07-42426ff1b3e4/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 [2020-11-28 03:16:33,208 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:16:33,208 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:16:33,212 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:16:33,212 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_b4696432-d6b3-40d0-bb07-42426ff1b3e4/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:33,234 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:16:33,235 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b4696432-d6b3-40d0-bb07-42426ff1b3e4/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:33,258 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:16:33,258 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:16:33,326 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:16:33,328 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:16:33,328 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:16:33,328 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:16:33,329 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:16:33,329 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:16:33,329 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:33,329 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:16:33,329 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:16:33,329 INFO L133 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined.c_Iteration2_Loop [2020-11-28 03:16:33,329 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:16:33,329 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:16:33,330 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:33,349 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:33,358 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:33,380 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:33,385 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:33,461 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:16:33,461 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b4696432-d6b3-40d0-bb07-42426ff1b3e4/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) [2020-11-28 03:16:33,470 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:16:33,472 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:16:33,473 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:16:33,473 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:16:33,473 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:16:33,481 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:16:33,482 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 [2020-11-28 03:16:33,490 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b4696432-d6b3-40d0-bb07-42426ff1b3e4/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 [2020-11-28 03:16:33,534 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:16:33,536 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:16:33,537 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:16:33,537 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:16:33,537 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:16:33,537 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:16:33,540 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:16:33,540 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:16:33,543 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:16:33,572 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:16:33,572 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_b4696432-d6b3-40d0-bb07-42426ff1b3e4/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:33,599 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:16:33,599 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:16:33,599 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:16:33,599 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = -1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-11-28 03:16:33,619 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:16:33,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:33,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:33,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:16:33,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:33,686 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:16:33,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:33,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:33,732 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-28 03:16:33,733 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 15 transitions. cyclomatic complexity: 10 Second operand 3 states. [2020-11-28 03:16:33,787 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 15 transitions. cyclomatic complexity: 10. Second operand 3 states. Result 22 states and 34 transitions. Complement of second has 7 states. [2020-11-28 03:16:33,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-28 03:16:33,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:16:33,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2020-11-28 03:16:33,790 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 2 letters. [2020-11-28 03:16:33,790 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:16:33,790 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2020-11-28 03:16:33,790 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:16:33,790 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 4 letters. [2020-11-28 03:16:33,790 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:16:33,791 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 34 transitions. [2020-11-28 03:16:33,792 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 03:16:33,793 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 15 states and 23 transitions. [2020-11-28 03:16:33,793 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-11-28 03:16:33,793 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-11-28 03:16:33,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 23 transitions. [2020-11-28 03:16:33,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:16:33,793 INFO L691 BuchiCegarLoop]: Abstraction has 15 states and 23 transitions. [2020-11-28 03:16:33,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 23 transitions. [2020-11-28 03:16:33,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-28 03:16:33,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-28 03:16:33,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 23 transitions. [2020-11-28 03:16:33,801 INFO L714 BuchiCegarLoop]: Abstraction has 15 states and 23 transitions. [2020-11-28 03:16:33,801 INFO L594 BuchiCegarLoop]: Abstraction has 15 states and 23 transitions. [2020-11-28 03:16:33,801 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-28 03:16:33,802 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 23 transitions. [2020-11-28 03:16:33,804 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 03:16:33,804 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:16:33,804 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:16:33,805 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2020-11-28 03:16:33,805 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 03:16:33,805 INFO L794 eck$LassoCheckResult]: Stem: 126#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 127#L13-2 assume !(main_~x~0 > 0 && main_~y~0 > 0); 128#L21-3 assume !!(main_~x~0 > 0);main_~y~0 := 1 + main_~y~0;main_~res~0 := 1 + main_~res~0; 140#L21-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0);main_~x~0 := main_~x~0 - 1;main_~y~0 := main_~y~0 - 1; 137#L21-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0);main_~x~0 := main_~x~0 - 1;main_~y~0 := main_~y~0 - 1; 135#L21-2 assume !(main_~x~0 > 0 && main_~y~0 > 0); 130#L21-3 [2020-11-28 03:16:33,806 INFO L796 eck$LassoCheckResult]: Loop: 130#L21-3 assume !!(main_~x~0 > 0);main_~y~0 := 1 + main_~y~0;main_~res~0 := 1 + main_~res~0; 131#L21-2 assume !(main_~x~0 > 0 && main_~y~0 > 0); 130#L21-3 [2020-11-28 03:16:33,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:33,806 INFO L82 PathProgramCache]: Analyzing trace with hash 924176399, now seen corresponding path program 1 times [2020-11-28 03:16:33,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:33,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436003914] [2020-11-28 03:16:33,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:33,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:33,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:33,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436003914] [2020-11-28 03:16:33,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:33,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:16:33,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793817784] [2020-11-28 03:16:33,902 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-28 03:16:33,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:33,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1640, now seen corresponding path program 2 times [2020-11-28 03:16:33,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:33,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212295774] [2020-11-28 03:16:33,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:33,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:33,916 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:33,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:33,919 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:33,920 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:16:33,955 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:16:33,955 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:16:33,955 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:16:33,955 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:16:33,955 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:16:33,955 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:33,955 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:16:33,955 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:16:33,955 INFO L133 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined.c_Iteration3_Loop [2020-11-28 03:16:33,956 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:16:33,956 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:16:33,957 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:33,964 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:33,976 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:33,980 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:33,988 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:34,100 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:16:34,100 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b4696432-d6b3-40d0-bb07-42426ff1b3e4/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 [2020-11-28 03:16:34,110 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:16:34,110 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:16:34,113 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:16:34,113 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_b4696432-d6b3-40d0-bb07-42426ff1b3e4/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:34,139 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:16:34,139 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b4696432-d6b3-40d0-bb07-42426ff1b3e4/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) [2020-11-28 03:16:34,163 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:16:34,164 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 [2020-11-28 03:16:34,239 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:16:34,241 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:16:34,241 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:16:34,241 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:16:34,241 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:16:34,241 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:16:34,241 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:34,241 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:16:34,241 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:16:34,241 INFO L133 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined.c_Iteration3_Loop [2020-11-28 03:16:34,242 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:16:34,242 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:16:34,243 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:34,262 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:34,270 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:34,275 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:34,279 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:34,335 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:16:34,336 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b4696432-d6b3-40d0-bb07-42426ff1b3e4/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:16:34,343 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:16:34,345 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:16:34,345 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:16:34,345 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:16:34,345 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:16:34,350 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:16:34,350 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:34,357 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b4696432-d6b3-40d0-bb07-42426ff1b3e4/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:16:34,396 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:16:34,398 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:16:34,398 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:16:34,398 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:16:34,398 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:16:34,398 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:16:34,403 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:16:34,404 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:34,406 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:16:34,415 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-28 03:16:34,415 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b4696432-d6b3-40d0-bb07-42426ff1b3e4/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:16:34,423 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:16:34,423 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:16:34,423 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:16:34,423 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = -1*ULTIMATE.start_main_~y~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:34,456 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:16:34,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:34,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:34,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:16:34,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:34,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:34,498 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:16:34,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:34,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:34,524 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-28 03:16:34,524 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 23 transitions. cyclomatic complexity: 13 Second operand 3 states. [2020-11-28 03:16:34,571 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 23 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 43 states and 65 transitions. Complement of second has 7 states. [2020-11-28 03:16:34,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-28 03:16:34,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:16:34,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-11-28 03:16:34,572 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 2 letters. [2020-11-28 03:16:34,572 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:16:34,572 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 8 letters. Loop has 2 letters. [2020-11-28 03:16:34,572 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:16:34,573 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 4 letters. [2020-11-28 03:16:34,573 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:16:34,573 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 65 transitions. [2020-11-28 03:16:34,576 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 03:16:34,577 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 30 states and 45 transitions. [2020-11-28 03:16:34,578 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-11-28 03:16:34,578 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-11-28 03:16:34,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 45 transitions. [2020-11-28 03:16:34,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:16:34,578 INFO L691 BuchiCegarLoop]: Abstraction has 30 states and 45 transitions. [2020-11-28 03:16:34,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 45 transitions. [2020-11-28 03:16:34,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 19. [2020-11-28 03:16:34,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-28 03:16:34,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 30 transitions. [2020-11-28 03:16:34,581 INFO L714 BuchiCegarLoop]: Abstraction has 19 states and 30 transitions. [2020-11-28 03:16:34,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:34,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:16:34,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:16:34,585 INFO L87 Difference]: Start difference. First operand 19 states and 30 transitions. Second operand 5 states. [2020-11-28 03:16:34,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:34,647 INFO L93 Difference]: Finished difference Result 13 states and 18 transitions. [2020-11-28 03:16:34,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:16:34,648 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 18 transitions. [2020-11-28 03:16:34,649 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:16:34,649 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 0 states and 0 transitions. [2020-11-28 03:16:34,649 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-28 03:16:34,649 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-28 03:16:34,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-28 03:16:34,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:16:34,650 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:16:34,650 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:16:34,650 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:16:34,650 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-28 03:16:34,650 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:16:34,650 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:16:34,650 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-28 03:16:34,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 03:16:34 BoogieIcfgContainer [2020-11-28 03:16:34,658 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 03:16:34,658 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:16:34,658 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:16:34,659 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:16:34,659 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:31" (3/4) ... [2020-11-28 03:16:34,662 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:16:34,662 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:16:34,665 INFO L168 Benchmark]: Toolchain (without parser) took 3502.77 ms. Allocated memory was 92.3 MB in the beginning and 132.1 MB in the end (delta: 39.8 MB). Free memory was 59.6 MB in the beginning and 67.2 MB in the end (delta: -7.6 MB). Peak memory consumption was 31.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:34,667 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 92.3 MB. Free memory was 67.9 MB in the beginning and 67.9 MB in the end (delta: 28.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:16:34,674 INFO L168 Benchmark]: CACSL2BoogieTranslator took 235.55 ms. Allocated memory is still 92.3 MB. Free memory was 59.4 MB in the beginning and 71.4 MB in the end (delta: -12.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:34,675 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.82 ms. Allocated memory is still 92.3 MB. Free memory was 71.4 MB in the beginning and 70.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:16:34,675 INFO L168 Benchmark]: Boogie Preprocessor took 39.64 ms. Allocated memory is still 92.3 MB. Free memory was 70.0 MB in the beginning and 68.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:34,676 INFO L168 Benchmark]: RCFGBuilder took 194.52 ms. Allocated memory is still 92.3 MB. Free memory was 68.8 MB in the beginning and 60.4 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:34,676 INFO L168 Benchmark]: BuchiAutomizer took 2983.64 ms. Allocated memory was 92.3 MB in the beginning and 132.1 MB in the end (delta: 39.8 MB). Free memory was 60.0 MB in the beginning and 68.3 MB in the end (delta: -8.3 MB). Peak memory consumption was 32.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:34,680 INFO L168 Benchmark]: Witness Printer took 4.18 ms. Allocated memory is still 132.1 MB. Free memory was 68.2 MB in the beginning and 67.2 MB in the end (delta: 963.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:34,689 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 92.3 MB. Free memory was 67.9 MB in the beginning and 67.9 MB in the end (delta: 28.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 235.55 ms. Allocated memory is still 92.3 MB. Free memory was 59.4 MB in the beginning and 71.4 MB in the end (delta: -12.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.82 ms. Allocated memory is still 92.3 MB. Free memory was 71.4 MB in the beginning and 70.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.64 ms. Allocated memory is still 92.3 MB. Free memory was 70.0 MB in the beginning and 68.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 194.52 ms. Allocated memory is still 92.3 MB. Free memory was 68.8 MB in the beginning and 60.4 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2983.64 ms. Allocated memory was 92.3 MB in the beginning and 132.1 MB in the end (delta: 39.8 MB). Free memory was 60.0 MB in the beginning and 68.3 MB in the end (delta: -8.3 MB). Peak memory consumption was 32.6 MB. Max. memory is 16.1 GB. * Witness Printer took 4.18 ms. Allocated memory is still 132.1 MB. Free memory was 68.2 MB in the beginning and 67.2 MB in the end (delta: 963.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function -1 * y and consists of 4 locations. One deterministic module has affine ranking function -1 * y and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.9s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 2.3s. Construction of modules took 0.1s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 12 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 15 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 16 SDtfs, 18 SDslu, 3 SDs, 0 SdLazy, 43 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax164 hnf97 lsp33 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 28ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...