./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/WhileDecr.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_d9dd8335-1049-4fa7-9547-f92d94f5dc80/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d9dd8335-1049-4fa7-9547-f92d94f5dc80/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d9dd8335-1049-4fa7-9547-f92d94f5dc80/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d9dd8335-1049-4fa7-9547-f92d94f5dc80/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/WhileDecr.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d9dd8335-1049-4fa7-9547-f92d94f5dc80/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d9dd8335-1049-4fa7-9547-f92d94f5dc80/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 a76a93feca7c314bf25e39b953063fea01fd6c04 ................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:59:44,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:59:44,230 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:59:44,303 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:59:44,304 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:59:44,309 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:59:44,313 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:59:44,319 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:59:44,325 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:59:44,333 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:59:44,335 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:59:44,337 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:59:44,338 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:59:44,341 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:59:44,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:59:44,345 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:59:44,346 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:59:44,350 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:59:44,353 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:59:44,359 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:59:44,363 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:59:44,365 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:59:44,368 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:59:44,369 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:59:44,378 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:59:44,381 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:59:44,382 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:59:44,383 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:59:44,384 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:59:44,386 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:59:44,386 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:59:44,388 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:59:44,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:59:44,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:59:44,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:59:44,394 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:59:44,395 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:59:44,395 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:59:44,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:59:44,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:59:44,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:59:44,400 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d9dd8335-1049-4fa7-9547-f92d94f5dc80/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-28 02:59:44,424 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:59:44,425 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:59:44,426 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:59:44,426 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:59:44,427 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:59:44,427 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 02:59:44,427 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 02:59:44,427 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 02:59:44,428 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 02:59:44,428 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 02:59:44,428 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 02:59:44,428 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:59:44,429 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 02:59:44,429 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:59:44,429 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:59:44,429 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 02:59:44,429 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 02:59:44,430 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 02:59:44,430 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:59:44,430 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 02:59:44,430 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:59:44,431 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 02:59:44,431 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:59:44,431 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:59:44,431 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 02:59:44,432 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:59:44,432 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:59:44,432 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:59:44,432 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 02:59:44,433 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 02:59:44,434 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_d9dd8335-1049-4fa7-9547-f92d94f5dc80/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d9dd8335-1049-4fa7-9547-f92d94f5dc80/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a76a93feca7c314bf25e39b953063fea01fd6c04 [2020-11-28 02:59:44,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:59:44,715 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:59:44,718 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:59:44,719 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:59:44,731 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:59:44,732 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d9dd8335-1049-4fa7-9547-f92d94f5dc80/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/WhileDecr.c [2020-11-28 02:59:44,827 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d9dd8335-1049-4fa7-9547-f92d94f5dc80/bin/uautomizer/data/f6ff011eb/92cb52f40f884c2c929f622018f24abd/FLAG922de8943 [2020-11-28 02:59:45,296 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:59:45,297 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d9dd8335-1049-4fa7-9547-f92d94f5dc80/sv-benchmarks/c/termination-restricted-15/WhileDecr.c [2020-11-28 02:59:45,305 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d9dd8335-1049-4fa7-9547-f92d94f5dc80/bin/uautomizer/data/f6ff011eb/92cb52f40f884c2c929f622018f24abd/FLAG922de8943 [2020-11-28 02:59:45,796 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d9dd8335-1049-4fa7-9547-f92d94f5dc80/bin/uautomizer/data/f6ff011eb/92cb52f40f884c2c929f622018f24abd [2020-11-28 02:59:45,798 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:59:45,800 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:59:45,802 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:59:45,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:59:45,807 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:59:45,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:59:45" (1/1) ... [2020-11-28 02:59:45,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71dc502 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:45, skipping insertion in model container [2020-11-28 02:59:45,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:59:45" (1/1) ... [2020-11-28 02:59:45,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:59:45,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:59:46,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:59:46,058 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:59:46,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:59:46,086 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:59:46,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:46 WrapperNode [2020-11-28 02:59:46,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:59:46,089 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:59:46,089 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:59:46,091 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:59:46,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:46" (1/1) ... [2020-11-28 02:59:46,104 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:46" (1/1) ... [2020-11-28 02:59:46,122 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:59:46,123 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:59:46,124 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:59:46,124 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:59:46,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:46" (1/1) ... [2020-11-28 02:59:46,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:46" (1/1) ... [2020-11-28 02:59:46,133 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:46" (1/1) ... [2020-11-28 02:59:46,133 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:46" (1/1) ... [2020-11-28 02:59:46,135 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:46" (1/1) ... [2020-11-28 02:59:46,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:46" (1/1) ... [2020-11-28 02:59:46,140 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:46" (1/1) ... [2020-11-28 02:59:46,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:59:46,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:59:46,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:59:46,142 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:59:46,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9dd8335-1049-4fa7-9547-f92d94f5dc80/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 02:59:46,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:59:46,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:59:46,310 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:59:46,310 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-28 02:59:46,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:59:46 BoogieIcfgContainer [2020-11-28 02:59:46,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:59:46,313 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 02:59:46,313 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 02:59:46,317 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 02:59:46,317 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:59:46,318 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 02:59:45" (1/3) ... [2020-11-28 02:59:46,319 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@588c66cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:59:46, skipping insertion in model container [2020-11-28 02:59:46,319 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:59:46,319 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:46" (2/3) ... [2020-11-28 02:59:46,319 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@588c66cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:59:46, skipping insertion in model container [2020-11-28 02:59:46,319 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:59:46,320 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:59:46" (3/3) ... [2020-11-28 02:59:46,321 INFO L373 chiAutomizerObserver]: Analyzing ICFG WhileDecr.c [2020-11-28 02:59:46,369 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 02:59:46,369 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 02:59:46,369 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 02:59:46,369 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:59:46,370 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:59:46,370 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 02:59:46,370 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:59:46,370 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 02:59:46,379 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2020-11-28 02:59:46,392 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 02:59:46,393 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:59:46,393 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:59:46,397 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-28 02:59:46,397 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 02:59:46,397 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 02:59:46,398 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2020-11-28 02:59:46,398 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 02:59:46,398 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:59:46,398 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:59:46,398 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-28 02:59:46,398 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 02:59:46,404 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 5#L9-2true [2020-11-28 02:59:46,404 INFO L796 eck$LassoCheckResult]: Loop: 5#L9-2true assume !!(main_~i~0 > 5);main_~i~0 := main_~i~0 - 1; 5#L9-2true [2020-11-28 02:59:46,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:46,410 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-28 02:59:46,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:46,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503191915] [2020-11-28 02:59:46,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:46,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:59:46,476 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:59:46,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:59:46,480 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:59:46,500 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:59:46,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:46,502 INFO L82 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2020-11-28 02:59:46,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:46,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569124354] [2020-11-28 02:59:46,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:46,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:59:46,523 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:59:46,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:59:46,535 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:59:46,537 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:59:46,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:46,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-11-28 02:59:46,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:46,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316514955] [2020-11-28 02:59:46,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:46,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:59:46,555 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:59:46,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:59:46,560 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:59:46,561 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:59:46,627 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:59:46,627 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:59:46,627 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:59:46,628 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:59:46,628 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 02:59:46,628 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:46,628 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:59:46,628 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:59:46,629 INFO L133 ssoRankerPreferences]: Filename of dumped script: WhileDecr.c_Iteration1_Loop [2020-11-28 02:59:46,629 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:59:46,629 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:59:46,650 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 02:59:46,660 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 02:59:46,702 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 02:59:46,791 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:59:46,792 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9dd8335-1049-4fa7-9547-f92d94f5dc80/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 02:59:46,810 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 02:59:46,810 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 [2020-11-28 02:59:46,820 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 02:59:46,820 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_d9dd8335-1049-4fa7-9547-f92d94f5dc80/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) [2020-11-28 02:59:46,877 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 02:59:46,877 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 [2020-11-28 02:59:46,895 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 02:59:46,895 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_d9dd8335-1049-4fa7-9547-f92d94f5dc80/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 [2020-11-28 02:59:46,932 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 02:59:46,933 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9dd8335-1049-4fa7-9547-f92d94f5dc80/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 [2020-11-28 02:59:46,961 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 02:59:46,961 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 02:59:46,997 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 02:59:46,998 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:59:46,999 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:59:46,999 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:59:46,999 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:59:46,999 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 02:59:46,999 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:46,999 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:59:46,999 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:59:46,999 INFO L133 ssoRankerPreferences]: Filename of dumped script: WhileDecr.c_Iteration1_Loop [2020-11-28 02:59:46,999 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:59:46,999 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:59:47,002 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 02:59:47,027 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 02:59:47,034 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 02:59:47,122 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:59:47,127 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9dd8335-1049-4fa7-9547-f92d94f5dc80/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:59:47,135 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 02:59:47,138 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:59:47,139 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:59:47,139 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:59:47,139 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:59:47,151 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:59:47,151 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:47,159 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9dd8335-1049-4fa7-9547-f92d94f5dc80/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 02:59:47,186 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 02:59:47,188 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:59:47,188 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:59:47,188 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:59:47,188 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:59:47,194 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:59:47,194 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:59:47,205 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9dd8335-1049-4fa7-9547-f92d94f5dc80/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:59:47,247 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 02:59:47,249 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:59:47,249 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:59:47,250 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:59:47,250 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:59:47,250 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:47,262 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:59:47,262 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:59:47,264 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 02:59:47,269 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 02:59:47,269 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_d9dd8335-1049-4fa7-9547-f92d94f5dc80/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:47,310 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 02:59:47,310 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 02:59:47,310 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 02:59:47,310 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-11-28 02:59:47,334 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 02:59:47,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:47,408 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 02:59:47,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:59:47,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:47,422 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 02:59:47,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:59:47,423 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 02:59:47,444 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 02:59:47,445 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states. Second operand 2 states. [2020-11-28 02:59:47,488 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states.. Second operand 2 states. Result 15 states and 18 transitions. Complement of second has 5 states. [2020-11-28 02:59:47,491 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 02:59:47,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-28 02:59:47,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2020-11-28 02:59:47,495 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 1 letters. [2020-11-28 02:59:47,495 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:59:47,496 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 1 letters. [2020-11-28 02:59:47,496 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:59:47,496 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 2 letters. [2020-11-28 02:59:47,497 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:59:47,498 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 18 transitions. [2020-11-28 02:59:47,503 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 02:59:47,506 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 0 states and 0 transitions. [2020-11-28 02:59:47,507 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-28 02:59:47,507 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-28 02:59:47,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-28 02:59:47,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 02:59:47,508 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:59:47,508 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:59:47,509 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:59:47,509 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-28 02:59:47,509 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:59:47,509 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 02:59:47,509 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-28 02:59:47,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 02:59:47 BoogieIcfgContainer [2020-11-28 02:59:47,515 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 02:59:47,516 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:59:47,516 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:59:47,516 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:59:47,517 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:59:46" (3/4) ... [2020-11-28 02:59:47,520 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 02:59:47,520 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:59:47,523 INFO L168 Benchmark]: Toolchain (without parser) took 1721.31 ms. Allocated memory is still 104.9 MB. Free memory was 73.4 MB in the beginning and 73.0 MB in the end (delta: 432.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:59:47,525 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 73.4 MB. Free memory was 35.2 MB in the beginning and 35.2 MB in the end (delta: 38.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:59:47,526 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.17 ms. Allocated memory is still 104.9 MB. Free memory was 73.2 MB in the beginning and 83.5 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:47,527 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.61 ms. Allocated memory is still 104.9 MB. Free memory was 83.5 MB in the beginning and 82.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:59:47,527 INFO L168 Benchmark]: Boogie Preprocessor took 17.46 ms. Allocated memory is still 104.9 MB. Free memory was 81.6 MB in the beginning and 80.8 MB in the end (delta: 840.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:47,528 INFO L168 Benchmark]: RCFGBuilder took 169.93 ms. Allocated memory is still 104.9 MB. Free memory was 80.8 MB in the beginning and 73.3 MB in the end (delta: 7.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:47,529 INFO L168 Benchmark]: BuchiAutomizer took 1202.97 ms. Allocated memory is still 104.9 MB. Free memory was 73.3 MB in the beginning and 73.0 MB in the end (delta: 353.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:47,529 INFO L168 Benchmark]: Witness Printer took 4.37 ms. Allocated memory is still 104.9 MB. Free memory is still 73.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:59:47,533 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 73.4 MB. Free memory was 35.2 MB in the beginning and 35.2 MB in the end (delta: 38.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 285.17 ms. Allocated memory is still 104.9 MB. Free memory was 73.2 MB in the beginning and 83.5 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.61 ms. Allocated memory is still 104.9 MB. Free memory was 83.5 MB in the beginning and 82.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.46 ms. Allocated memory is still 104.9 MB. Free memory was 81.6 MB in the beginning and 80.8 MB in the end (delta: 840.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 169.93 ms. Allocated memory is still 104.9 MB. Free memory was 80.8 MB in the beginning and 73.3 MB in the end (delta: 7.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1202.97 ms. Allocated memory is still 104.9 MB. Free memory was 73.3 MB in the beginning and 73.0 MB in the end (delta: 353.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Witness Printer took 4.37 ms. Allocated memory is still 104.9 MB. Free memory is still 73.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function i and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.1s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 4 SDtfs, 4 SDslu, 3 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital10 mio100 ax220 hnf100 lsp45 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 31ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...