./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/Nested-2.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_8ba44a58-7f3f-4edf-b833-6daa23ddbd2c/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8ba44a58-7f3f-4edf-b833-6daa23ddbd2c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8ba44a58-7f3f-4edf-b833-6daa23ddbd2c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8ba44a58-7f3f-4edf-b833-6daa23ddbd2c/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/Nested-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8ba44a58-7f3f-4edf-b833-6daa23ddbd2c/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8ba44a58-7f3f-4edf-b833-6daa23ddbd2c/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 5f36db653fc1ba72ccbb6cf21df7b84599ee28f0 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 22:07:03,888 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:07:03,892 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:07:03,998 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:07:03,999 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:07:04,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:07:04,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:07:04,025 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:07:04,027 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:07:04,029 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:07:04,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:07:04,032 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:07:04,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:07:04,039 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:07:04,041 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:07:04,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:07:04,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:07:04,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:07:04,048 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:07:04,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:07:04,060 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:07:04,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:07:04,070 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:07:04,072 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:07:04,081 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:07:04,081 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:07:04,082 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:07:04,092 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:07:04,092 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:07:04,094 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:07:04,095 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:07:04,096 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:07:04,099 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:07:04,101 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:07:04,103 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:07:04,103 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:07:04,104 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:07:04,105 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:07:04,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:07:04,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:07:04,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:07:04,111 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8ba44a58-7f3f-4edf-b833-6daa23ddbd2c/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-29 22:07:04,164 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:07:04,164 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:07:04,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:07:04,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:07:04,167 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:07:04,168 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 22:07:04,168 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 22:07:04,168 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 22:07:04,168 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 22:07:04,169 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 22:07:04,170 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 22:07:04,170 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:07:04,171 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 22:07:04,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:07:04,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:07:04,172 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 22:07:04,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 22:07:04,172 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 22:07:04,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 22:07:04,173 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 22:07:04,173 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:07:04,173 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 22:07:04,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:07:04,174 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:07:04,174 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 22:07:04,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:07:04,175 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 22:07:04,175 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:07:04,175 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 22:07:04,177 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 22:07:04,177 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_8ba44a58-7f3f-4edf-b833-6daa23ddbd2c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8ba44a58-7f3f-4edf-b833-6daa23ddbd2c/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5f36db653fc1ba72ccbb6cf21df7b84599ee28f0 [2020-11-29 22:07:04,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:07:04,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:07:04,641 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:07:04,644 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:07:04,645 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:07:04,646 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8ba44a58-7f3f-4edf-b833-6daa23ddbd2c/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/Nested-2.c [2020-11-29 22:07:04,743 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8ba44a58-7f3f-4edf-b833-6daa23ddbd2c/bin/uautomizer/data/be78cfca4/cd9c1a5ebad74061991aa0cf6bbb89ac/FLAG6e1db8f14 [2020-11-29 22:07:05,324 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:07:05,326 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8ba44a58-7f3f-4edf-b833-6daa23ddbd2c/sv-benchmarks/c/termination-restricted-15/Nested-2.c [2020-11-29 22:07:05,351 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8ba44a58-7f3f-4edf-b833-6daa23ddbd2c/bin/uautomizer/data/be78cfca4/cd9c1a5ebad74061991aa0cf6bbb89ac/FLAG6e1db8f14 [2020-11-29 22:07:05,694 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8ba44a58-7f3f-4edf-b833-6daa23ddbd2c/bin/uautomizer/data/be78cfca4/cd9c1a5ebad74061991aa0cf6bbb89ac [2020-11-29 22:07:05,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:07:05,701 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 22:07:05,706 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:07:05,706 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:07:05,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:07:05,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:07:05" (1/1) ... [2020-11-29 22:07:05,714 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2553e8bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:07:05, skipping insertion in model container [2020-11-29 22:07:05,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:07:05" (1/1) ... [2020-11-29 22:07:05,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:07:05,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:07:05,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:07:05,993 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:07:06,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:07:06,047 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:07:06,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:07:06 WrapperNode [2020-11-29 22:07:06,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:07:06,050 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 22:07:06,050 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 22:07:06,050 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 22:07:06,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:07:06" (1/1) ... [2020-11-29 22:07:06,067 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:07:06" (1/1) ... [2020-11-29 22:07:06,086 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 22:07:06,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:07:06,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:07:06,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:07:06,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:07:06" (1/1) ... [2020-11-29 22:07:06,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:07:06" (1/1) ... [2020-11-29 22:07:06,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:07:06" (1/1) ... [2020-11-29 22:07:06,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:07:06" (1/1) ... [2020-11-29 22:07:06,099 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:07:06" (1/1) ... [2020-11-29 22:07:06,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:07:06" (1/1) ... [2020-11-29 22:07:06,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:07:06" (1/1) ... [2020-11-29 22:07:06,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:07:06,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:07:06,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:07:06,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:07:06,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:07:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8ba44a58-7f3f-4edf-b833-6daa23ddbd2c/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:07:06,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:07:06,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:07:06,372 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:07:06,373 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-29 22:07:06,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:07:06 BoogieIcfgContainer [2020-11-29 22:07:06,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:07:06,376 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 22:07:06,376 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 22:07:06,380 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 22:07:06,381 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 22:07:06,382 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 10:07:05" (1/3) ... [2020-11-29 22:07:06,383 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@69652f6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 10:07:06, skipping insertion in model container [2020-11-29 22:07:06,384 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 22:07:06,384 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:07:06" (2/3) ... [2020-11-29 22:07:06,384 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@69652f6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 10:07:06, skipping insertion in model container [2020-11-29 22:07:06,385 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 22:07:06,385 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:07:06" (3/3) ... [2020-11-29 22:07:06,387 INFO L373 chiAutomizerObserver]: Analyzing ICFG Nested-2.c [2020-11-29 22:07:06,457 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 22:07:06,458 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 22:07:06,458 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 22:07:06,458 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:07:06,458 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:07:06,458 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 22:07:06,459 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:07:06,459 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 22:07:06,475 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-29 22:07:06,497 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 22:07:06,497 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:07:06,498 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:07:06,505 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 22:07:06,505 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 22:07:06,505 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 22:07:06,506 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-29 22:07:06,507 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 22:07:06,508 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:07:06,508 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:07:06,509 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 22:07:06,509 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 22:07:06,517 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_~i~0, main_~j~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0;main_~j~0 := 3; 9#L11-2true [2020-11-29 22:07:06,518 INFO L796 eck$LassoCheckResult]: Loop: 9#L11-2true assume !!(main_~i~0 < 10); 3#L12-2true assume !(main_~j~0 < 12); 10#L12-3true main_~i~0 := 1 + main_~i~0; 9#L11-2true [2020-11-29 22:07:06,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:07:06,530 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-29 22:07:06,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:07:06,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125799282] [2020-11-29 22:07:06,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:07:06,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:07:06,645 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:07:06,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:07:06,662 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:07:06,680 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:07:06,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:07:06,687 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2020-11-29 22:07:06,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:07:06,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596881256] [2020-11-29 22:07:06,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:07:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:07:06,719 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:07:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:07:06,729 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:07:06,734 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:07:06,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:07:06,737 INFO L82 PathProgramCache]: Analyzing trace with hash 963472, now seen corresponding path program 1 times [2020-11-29 22:07:06,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:07:06,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665622055] [2020-11-29 22:07:06,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:07:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:07:06,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:07:06,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665622055] [2020-11-29 22:07:06,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:07:06,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 22:07:06,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795296779] [2020-11-29 22:07:07,040 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:07:07,041 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:07:07,041 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:07:07,041 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:07:07,041 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 22:07:07,042 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:07:07,042 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:07:07,042 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:07:07,042 INFO L133 ssoRankerPreferences]: Filename of dumped script: Nested-2.c_Iteration1_Loop [2020-11-29 22:07:07,043 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:07:07,043 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:07:07,069 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:07:07,090 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:07:07,097 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:07:07,108 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:07:07,235 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:07:07,236 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8ba44a58-7f3f-4edf-b833-6daa23ddbd2c/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) [2020-11-29 22:07:07,251 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 22:07:07,251 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:07:07,264 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 22:07:07,264 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_8ba44a58-7f3f-4edf-b833-6daa23ddbd2c/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:07:07,345 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 22:07:07,345 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:07:07,352 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 22:07:07,352 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_8ba44a58-7f3f-4edf-b833-6daa23ddbd2c/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:07:07,405 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 22:07:07,406 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 22:07:07,411 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 22:07:07,411 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~j~0=12} Honda state: {ULTIMATE.start_main_~j~0=12} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8ba44a58-7f3f-4edf-b833-6daa23ddbd2c/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:07:07,447 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 22:07:07,447 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8ba44a58-7f3f-4edf-b833-6daa23ddbd2c/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:07:07,480 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 22:07:07,480 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 22:07:07,535 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 22:07:07,537 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:07:07,537 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:07:07,538 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:07:07,538 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:07:07,538 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 22:07:07,538 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:07:07,538 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:07:07,538 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:07:07,539 INFO L133 ssoRankerPreferences]: Filename of dumped script: Nested-2.c_Iteration1_Loop [2020-11-29 22:07:07,539 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:07:07,539 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:07:07,541 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:07:07,557 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:07:07,566 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:07:07,571 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:07:07,732 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2020-11-29 22:07:07,842 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:07:07,848 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8ba44a58-7f3f-4edf-b833-6daa23ddbd2c/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:07:07,857 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:07:07,860 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:07:07,860 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:07:07,861 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:07:07,861 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:07:07,867 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:07:07,867 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:07:07,899 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8ba44a58-7f3f-4edf-b833-6daa23ddbd2c/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 [2020-11-29 22:07:07,945 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:07:07,946 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:07:07,947 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:07:07,947 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:07:07,947 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:07:07,947 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:07:07,950 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:07:07,950 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:07:07,952 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8ba44a58-7f3f-4edf-b833-6daa23ddbd2c/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:07:08,012 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:07:08,015 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:07:08,015 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:07:08,015 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:07:08,015 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:07:08,020 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:07:08,020 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 [2020-11-29 22:07:08,027 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8ba44a58-7f3f-4edf-b833-6daa23ddbd2c/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:07:08,078 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:07:08,081 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:07:08,081 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:07:08,081 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:07:08,081 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:07:08,081 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:07:08,083 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:07:08,083 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:07:08,087 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 22:07:08,095 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 22:07:08,096 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8ba44a58-7f3f-4edf-b833-6daa23ddbd2c/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) [2020-11-29 22:07:08,131 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 22:07:08,132 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 22:07:08,132 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 22:07:08,133 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 19 Supporting invariants [] Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:07:08,164 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 22:07:08,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:07:08,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:07:08,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 22:07:08,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:07:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:07:08,258 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 22:07:08,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:07:08,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:07:08,295 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-29 22:07:08,296 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2020-11-29 22:07:08,360 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 23 states and 35 transitions. Complement of second has 7 states. [2020-11-29 22:07:08,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 22:07:08,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 22:07:08,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2020-11-29 22:07:08,369 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 3 letters. [2020-11-29 22:07:08,370 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:07:08,370 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 4 letters. Loop has 3 letters. [2020-11-29 22:07:08,371 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:07:08,371 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 6 letters. [2020-11-29 22:07:08,371 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:07:08,372 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 35 transitions. [2020-11-29 22:07:08,382 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 22:07:08,387 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2020-11-29 22:07:08,388 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-11-29 22:07:08,388 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-11-29 22:07:08,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2020-11-29 22:07:08,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 22:07:08,390 INFO L691 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-11-29 22:07:08,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2020-11-29 22:07:08,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2020-11-29 22:07:08,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-29 22:07:08,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2020-11-29 22:07:08,420 INFO L714 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2020-11-29 22:07:08,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:07:08,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:07:08,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:07:08,429 INFO L87 Difference]: Start difference. First operand 6 states and 9 transitions. Second operand 3 states. [2020-11-29 22:07:08,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:07:08,442 INFO L93 Difference]: Finished difference Result 8 states and 11 transitions. [2020-11-29 22:07:08,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:07:08,444 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 11 transitions. [2020-11-29 22:07:08,445 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 22:07:08,445 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 8 states and 11 transitions. [2020-11-29 22:07:08,445 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-11-29 22:07:08,445 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-11-29 22:07:08,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2020-11-29 22:07:08,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 22:07:08,446 INFO L691 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2020-11-29 22:07:08,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2020-11-29 22:07:08,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2020-11-29 22:07:08,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-29 22:07:08,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2020-11-29 22:07:08,448 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-11-29 22:07:08,448 INFO L594 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-11-29 22:07:08,448 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 22:07:08,448 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2020-11-29 22:07:08,449 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 22:07:08,449 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:07:08,449 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:07:08,450 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-29 22:07:08,450 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-29 22:07:08,450 INFO L794 eck$LassoCheckResult]: Stem: 88#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0;main_~j~0 := 3; 89#L11-2 assume !!(main_~i~0 < 10); 85#L12-2 [2020-11-29 22:07:08,450 INFO L796 eck$LassoCheckResult]: Loop: 85#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~j~0 := 2 + main_~j~0; 85#L12-2 [2020-11-29 22:07:08,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:07:08,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-11-29 22:07:08,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:07:08,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889008641] [2020-11-29 22:07:08,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:07:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:07:08,464 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:07:08,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:07:08,469 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:07:08,471 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:07:08,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:07:08,473 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2020-11-29 22:07:08,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:07:08,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523058701] [2020-11-29 22:07:08,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:07:08,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:07:08,483 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:07:08,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:07:08,488 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:07:08,490 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:07:08,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:07:08,491 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2020-11-29 22:07:08,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:07:08,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117203984] [2020-11-29 22:07:08,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:07:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:07:08,512 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:07:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:07:08,516 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:07:08,517 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:07:08,541 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:07:08,541 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:07:08,541 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:07:08,542 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:07:08,542 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 22:07:08,542 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:07:08,542 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:07:08,542 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:07:08,542 INFO L133 ssoRankerPreferences]: Filename of dumped script: Nested-2.c_Iteration2_Loop [2020-11-29 22:07:08,542 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:07:08,543 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:07:08,544 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:07:08,559 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:07:08,580 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:07:08,729 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:07:08,730 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8ba44a58-7f3f-4edf-b833-6daa23ddbd2c/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:07:08,734 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 22:07:08,734 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 22:07:08,739 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 22:07:08,739 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_8ba44a58-7f3f-4edf-b833-6daa23ddbd2c/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:07:08,771 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 22:07:08,772 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8ba44a58-7f3f-4edf-b833-6daa23ddbd2c/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:07:08,807 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 22:07:08,807 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 22:07:08,840 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 22:07:08,841 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:07:08,842 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:07:08,842 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:07:08,842 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:07:08,842 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 22:07:08,842 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:07:08,842 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:07:08,842 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:07:08,842 INFO L133 ssoRankerPreferences]: Filename of dumped script: Nested-2.c_Iteration2_Loop [2020-11-29 22:07:08,842 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:07:08,842 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:07:08,844 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:07:08,865 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:07:08,885 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:07:08,937 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:07:08,938 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8ba44a58-7f3f-4edf-b833-6daa23ddbd2c/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) [2020-11-29 22:07:08,947 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:07:08,949 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:07:08,949 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:07:08,949 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:07:08,950 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:07:08,956 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:07:08,959 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 [2020-11-29 22:07:08,965 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8ba44a58-7f3f-4edf-b833-6daa23ddbd2c/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:07:09,006 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:07:09,007 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:07:09,008 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:07:09,008 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:07:09,008 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:07:09,008 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:07:09,010 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:07:09,010 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:07:09,013 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 22:07:09,017 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 22:07:09,017 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8ba44a58-7f3f-4edf-b833-6daa23ddbd2c/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) [2020-11-29 22:07:09,027 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 22:07:09,027 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 22:07:09,027 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 22:07:09,028 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = -2*ULTIMATE.start_main_~j~0 + 23 Supporting invariants [] Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:07:09,053 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 22:07:09,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:07:09,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:07:09,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 22:07:09,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:07:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:07:09,103 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 22:07:09,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:07:09,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:07:09,105 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-29 22:07:09,105 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 2 states. [2020-11-29 22:07:09,116 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 14 states and 19 transitions. Complement of second has 4 states. [2020-11-29 22:07:09,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 22:07:09,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-29 22:07:09,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2020-11-29 22:07:09,117 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 2 letters. Loop has 1 letters. [2020-11-29 22:07:09,118 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:07:09,118 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 3 letters. Loop has 1 letters. [2020-11-29 22:07:09,118 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:07:09,118 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 2 letters. Loop has 2 letters. [2020-11-29 22:07:09,118 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:07:09,119 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2020-11-29 22:07:09,120 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 22:07:09,120 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 0 states and 0 transitions. [2020-11-29 22:07:09,120 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 22:07:09,120 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 22:07:09,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 22:07:09,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 22:07:09,121 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:07:09,121 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:07:09,121 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:07:09,121 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 22:07:09,121 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 22:07:09,121 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 22:07:09,121 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 22:07:09,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 10:07:09 BoogieIcfgContainer [2020-11-29 22:07:09,128 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 22:07:09,129 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:07:09,129 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:07:09,129 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:07:09,129 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:07:06" (3/4) ... [2020-11-29 22:07:09,133 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 22:07:09,133 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:07:09,135 INFO L168 Benchmark]: Toolchain (without parser) took 3433.23 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 51.7 MB in the beginning and 47.4 MB in the end (delta: 4.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 16.1 GB. [2020-11-29 22:07:09,136 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 79.7 MB. Free memory was 36.2 MB in the beginning and 36.2 MB in the end (delta: 34.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:07:09,137 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.16 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 51.7 MB in the beginning and 76.5 MB in the end (delta: -24.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:07:09,138 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.89 ms. Allocated memory is still 96.5 MB. Free memory was 76.5 MB in the beginning and 75.6 MB in the end (delta: 863.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:07:09,139 INFO L168 Benchmark]: Boogie Preprocessor took 17.91 ms. Allocated memory is still 96.5 MB. Free memory was 75.1 MB in the beginning and 74.5 MB in the end (delta: 560.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:07:09,139 INFO L168 Benchmark]: RCFGBuilder took 268.88 ms. Allocated memory is still 96.5 MB. Free memory was 74.5 MB in the beginning and 66.1 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:07:09,140 INFO L168 Benchmark]: BuchiAutomizer took 2751.93 ms. Allocated memory is still 96.5 MB. Free memory was 66.1 MB in the beginning and 47.4 MB in the end (delta: 18.7 MB). Peak memory consumption was 21.9 MB. Max. memory is 16.1 GB. [2020-11-29 22:07:09,141 INFO L168 Benchmark]: Witness Printer took 4.61 ms. Allocated memory is still 96.5 MB. Free memory is still 47.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:07:09,145 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 79.7 MB. Free memory was 36.2 MB in the beginning and 36.2 MB in the end (delta: 34.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 343.16 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 51.7 MB in the beginning and 76.5 MB in the end (delta: -24.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.89 ms. Allocated memory is still 96.5 MB. Free memory was 76.5 MB in the beginning and 75.6 MB in the end (delta: 863.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.91 ms. Allocated memory is still 96.5 MB. Free memory was 75.1 MB in the beginning and 74.5 MB in the end (delta: 560.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 268.88 ms. Allocated memory is still 96.5 MB. Free memory was 74.5 MB in the beginning and 66.1 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2751.93 ms. Allocated memory is still 96.5 MB. Free memory was 66.1 MB in the beginning and 47.4 MB in the end (delta: 18.7 MB). Peak memory consumption was 21.9 MB. Max. memory is 16.1 GB. * Witness Printer took 4.61 ms. Allocated memory is still 96.5 MB. Free memory is still 47.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * i + 19 and consists of 5 locations. One deterministic module has affine ranking function -2 * j + 23 and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.6s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 2.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 14 SDtfs, 13 SDslu, 12 SDs, 0 SdLazy, 12 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax202 hnf98 lsp42 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 50ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...