./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig1.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_3bf8f602-1ed4-4f17-b207-a684b9d6dd41/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3bf8f602-1ed4-4f17-b207-a684b9d6dd41/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3bf8f602-1ed4-4f17-b207-a684b9d6dd41/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3bf8f602-1ed4-4f17-b207-a684b9d6dd41/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3bf8f602-1ed4-4f17-b207-a684b9d6dd41/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3bf8f602-1ed4-4f17-b207-a684b9d6dd41/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 bbffee41c5a3e36a7439f4e96877154fc3cf2a16 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:18:16,322 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:18:16,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:18:16,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:18:16,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:18:16,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:18:16,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:18:16,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:18:16,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:18:16,401 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:18:16,402 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:18:16,403 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:18:16,404 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:18:16,405 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:18:16,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:18:16,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:18:16,409 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:18:16,410 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:18:16,413 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:18:16,415 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:18:16,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:18:16,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:18:16,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:18:16,421 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:18:16,425 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:18:16,426 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:18:16,426 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:18:16,427 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:18:16,428 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:18:16,429 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:18:16,429 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:18:16,430 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:18:16,431 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:18:16,432 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:18:16,433 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:18:16,434 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:18:16,434 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:18:16,435 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:18:16,435 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:18:16,436 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:18:16,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:18:16,438 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3bf8f602-1ed4-4f17-b207-a684b9d6dd41/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-28 03:18:16,461 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:18:16,461 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:18:16,463 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:18:16,463 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:18:16,463 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:18:16,463 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 03:18:16,463 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 03:18:16,463 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 03:18:16,464 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 03:18:16,464 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 03:18:16,464 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 03:18:16,464 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:18:16,464 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:18:16,465 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:18:16,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:18:16,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 03:18:16,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 03:18:16,470 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 03:18:16,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:18:16,470 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 03:18:16,470 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:18:16,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 03:18:16,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:18:16,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:18:16,472 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 03:18:16,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:18:16,472 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:18:16,472 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:18:16,473 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 03:18:16,476 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 03:18:16,477 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_3bf8f602-1ed4-4f17-b207-a684b9d6dd41/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3bf8f602-1ed4-4f17-b207-a684b9d6dd41/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bbffee41c5a3e36a7439f4e96877154fc3cf2a16 [2020-11-28 03:18:16,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:18:16,767 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:18:16,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:18:16,773 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:18:16,774 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:18:16,775 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3bf8f602-1ed4-4f17-b207-a684b9d6dd41/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig1.c [2020-11-28 03:18:16,852 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3bf8f602-1ed4-4f17-b207-a684b9d6dd41/bin/uautomizer/data/05b7f06ae/7e0a1bdbdd9d449a943282489b014a52/FLAGdc1879ace [2020-11-28 03:18:17,303 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:18:17,304 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3bf8f602-1ed4-4f17-b207-a684b9d6dd41/sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig1.c [2020-11-28 03:18:17,312 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3bf8f602-1ed4-4f17-b207-a684b9d6dd41/bin/uautomizer/data/05b7f06ae/7e0a1bdbdd9d449a943282489b014a52/FLAGdc1879ace [2020-11-28 03:18:17,698 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3bf8f602-1ed4-4f17-b207-a684b9d6dd41/bin/uautomizer/data/05b7f06ae/7e0a1bdbdd9d449a943282489b014a52 [2020-11-28 03:18:17,701 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:18:17,702 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:18:17,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:18:17,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:18:17,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:18:17,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:18:17" (1/1) ... [2020-11-28 03:18:17,717 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1331dd55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:17, skipping insertion in model container [2020-11-28 03:18:17,717 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:18:17" (1/1) ... [2020-11-28 03:18:17,725 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:18:17,737 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:18:17,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:18:17,872 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:18:17,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:18:17,916 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:18:17,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:17 WrapperNode [2020-11-28 03:18:17,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:18:17,921 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:18:17,922 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:18:17,922 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:18:17,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:17" (1/1) ... [2020-11-28 03:18:17,937 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:17" (1/1) ... [2020-11-28 03:18:17,960 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:18:17,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:18:17,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:18:17,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:18:17,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:17" (1/1) ... [2020-11-28 03:18:17,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:17" (1/1) ... [2020-11-28 03:18:17,972 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:17" (1/1) ... [2020-11-28 03:18:17,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:17" (1/1) ... [2020-11-28 03:18:17,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:17" (1/1) ... [2020-11-28 03:18:17,985 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:17" (1/1) ... [2020-11-28 03:18:17,986 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:17" (1/1) ... [2020-11-28 03:18:17,987 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:18:17,988 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:18:17,988 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:18:17,989 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:18:17,990 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3bf8f602-1ed4-4f17-b207-a684b9d6dd41/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:18:18,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:18:18,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:18:18,200 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:18:18,200 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-28 03:18:18,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:18:18 BoogieIcfgContainer [2020-11-28 03:18:18,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:18:18,203 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 03:18:18,203 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 03:18:18,206 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 03:18:18,207 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:18:18,207 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 03:18:17" (1/3) ... [2020-11-28 03:18:18,210 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@394e0849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:18:18, skipping insertion in model container [2020-11-28 03:18:18,210 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:18:18,210 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:17" (2/3) ... [2020-11-28 03:18:18,211 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@394e0849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:18:18, skipping insertion in model container [2020-11-28 03:18:18,211 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:18:18,211 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:18:18" (3/3) ... [2020-11-28 03:18:18,212 INFO L373 chiAutomizerObserver]: Analyzing ICFG Urban-WST2013-Fig1.c [2020-11-28 03:18:18,275 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 03:18:18,275 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 03:18:18,275 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 03:18:18,275 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:18:18,275 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:18:18,276 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 03:18:18,276 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:18:18,276 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 03:18:18,292 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-11-28 03:18:18,310 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 03:18:18,310 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:18:18,310 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:18:18,316 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-28 03:18:18,316 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 03:18:18,316 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 03:18:18,317 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-11-28 03:18:18,317 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 03:18:18,318 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:18:18,318 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:18:18,318 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-28 03:18:18,318 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 03:18:18,325 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~x~0;havoc main_~x~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0; 5#L18-2true [2020-11-28 03:18:18,325 INFO L796 eck$LassoCheckResult]: Loop: 5#L18-2true assume !!(main_~x~0 <= 10); 8#L18true assume main_~x~0 > 6;main_~x~0 := 2 + main_~x~0; 5#L18-2true [2020-11-28 03:18:18,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:18,332 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-28 03:18:18,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:18,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413963984] [2020-11-28 03:18:18,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:18,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:18:18,416 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:18:18,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:18:18,425 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:18:18,439 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:18:18,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:18,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2020-11-28 03:18:18,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:18,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345560169] [2020-11-28 03:18:18,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:18,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:18:18,457 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:18:18,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:18:18,467 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:18:18,469 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:18:18,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:18,471 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2020-11-28 03:18:18,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:18,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68644074] [2020-11-28 03:18:18,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:18,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:18:18,478 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:18:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:18:18,488 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:18:18,492 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:18:18,647 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:18:18,648 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:18:18,648 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:18:18,648 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:18:18,648 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:18:18,649 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:18:18,649 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:18:18,649 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:18:18,649 INFO L133 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig1.c_Iteration1_Loop [2020-11-28 03:18:18,649 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:18:18,650 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:18:18,674 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:18:18,683 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:18:18,688 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:18:18,823 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:18:18,823 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3bf8f602-1ed4-4f17-b207-a684b9d6dd41/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:18:18,830 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:18:18,830 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:18:18,839 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:18:18,839 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_3bf8f602-1ed4-4f17-b207-a684b9d6dd41/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 03:18:18,886 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:18:18,886 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 03:18:18,890 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:18:18,890 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_3bf8f602-1ed4-4f17-b207-a684b9d6dd41/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 03:18:18,918 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:18:18,918 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3bf8f602-1ed4-4f17-b207-a684b9d6dd41/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:18:18,964 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:18:18,964 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:18:18,985 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:18:19,019 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:18:19,019 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:18:19,019 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:18:19,020 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:18:19,020 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:18:19,020 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:18:19,020 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:18:19,020 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:18:19,020 INFO L133 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig1.c_Iteration1_Loop [2020-11-28 03:18:19,021 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:18:19,021 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:18:19,023 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:18:19,032 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:18:19,046 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:18:19,136 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:18:19,141 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3bf8f602-1ed4-4f17-b207-a684b9d6dd41/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 03:18:19,150 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:18:19,152 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:18:19,152 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:18:19,152 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:18:19,152 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:18:19,161 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:18:19,164 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 03:18:19,176 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3bf8f602-1ed4-4f17-b207-a684b9d6dd41/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:18:19,204 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:18:19,205 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:18:19,206 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:18:19,206 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:18:19,206 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:18:19,210 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:18:19,210 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:18:19,219 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3bf8f602-1ed4-4f17-b207-a684b9d6dd41/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:18:19,241 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:18:19,242 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:18:19,242 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:18:19,243 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:18:19,243 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:18:19,243 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:18:19,245 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:18:19,245 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:18:19,248 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:18:19,258 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:18:19,258 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_3bf8f602-1ed4-4f17-b207-a684b9d6dd41/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 03:18:19,277 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:18:19,285 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:18:19,285 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:18:19,286 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~x~0 + 11 Supporting invariants [] [2020-11-28 03:18:19,322 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:18:19,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:19,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:19,366 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:18:19,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:18:19,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:19,379 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:18:19,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:18:19,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:19,412 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-28 03:18:19,413 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2020-11-28 03:18:19,493 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 20 states and 28 transitions. Complement of second has 7 states. [2020-11-28 03:18:19,495 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 [2020-11-28 03:18:19,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:18:19,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2020-11-28 03:18:19,499 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 1 letters. Loop has 2 letters. [2020-11-28 03:18:19,500 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:18:19,500 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 3 letters. Loop has 2 letters. [2020-11-28 03:18:19,500 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:18:19,500 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 1 letters. Loop has 4 letters. [2020-11-28 03:18:19,500 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:18:19,501 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 28 transitions. [2020-11-28 03:18:19,503 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 03:18:19,510 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 8 states and 11 transitions. [2020-11-28 03:18:19,511 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-11-28 03:18:19,512 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-11-28 03:18:19,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2020-11-28 03:18:19,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:18:19,513 INFO L691 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2020-11-28 03:18:19,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2020-11-28 03:18:19,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2020-11-28 03:18:19,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-28 03:18:19,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2020-11-28 03:18:19,537 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-11-28 03:18:19,537 INFO L594 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-11-28 03:18:19,537 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-28 03:18:19,537 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2020-11-28 03:18:19,539 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 03:18:19,539 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:18:19,539 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:18:19,539 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-28 03:18:19,539 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 03:18:19,539 INFO L794 eck$LassoCheckResult]: Stem: 63#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0;havoc main_~x~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0; 64#L18-2 assume !!(main_~x~0 <= 10); 66#L18 [2020-11-28 03:18:19,540 INFO L796 eck$LassoCheckResult]: Loop: 66#L18 assume !(main_~x~0 > 6); 65#L18-2 assume !!(main_~x~0 <= 10); 66#L18 [2020-11-28 03:18:19,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:19,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-11-28 03:18:19,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:19,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813733992] [2020-11-28 03:18:19,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:19,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:18:19,550 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:18:19,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:18:19,554 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:18:19,556 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:18:19,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:19,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 1 times [2020-11-28 03:18:19,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:19,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958315989] [2020-11-28 03:18:19,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:19,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:18:19,566 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:18:19,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:18:19,570 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:18:19,571 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:18:19,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:19,572 INFO L82 PathProgramCache]: Analyzing trace with hash 963397, now seen corresponding path program 1 times [2020-11-28 03:18:19,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:19,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889458093] [2020-11-28 03:18:19,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:18:19,579 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:18:19,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:18:19,581 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:18:19,582 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:18:19,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 03:18:19 BoogieIcfgContainer [2020-11-28 03:18:19,625 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 03:18:19,625 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:18:19,625 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:18:19,626 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:18:19,626 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:18:18" (3/4) ... [2020-11-28 03:18:19,632 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-28 03:18:19,662 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3bf8f602-1ed4-4f17-b207-a684b9d6dd41/bin/uautomizer/witness.graphml [2020-11-28 03:18:19,662 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:18:19,664 INFO L168 Benchmark]: Toolchain (without parser) took 1961.04 ms. Allocated memory was 92.3 MB in the beginning and 113.2 MB in the end (delta: 21.0 MB). Free memory was 56.7 MB in the beginning and 68.9 MB in the end (delta: -12.2 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:19,665 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 92.3 MB. Free memory is still 73.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:18:19,666 INFO L168 Benchmark]: CACSL2BoogieTranslator took 206.19 ms. Allocated memory is still 92.3 MB. Free memory was 56.5 MB in the beginning and 71.0 MB in the end (delta: -14.4 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:19,666 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.34 ms. Allocated memory is still 92.3 MB. Free memory was 70.8 MB in the beginning and 69.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:18:19,667 INFO L168 Benchmark]: Boogie Preprocessor took 24.46 ms. Allocated memory is still 92.3 MB. Free memory was 69.6 MB in the beginning and 68.8 MB in the end (delta: 830.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:18:19,667 INFO L168 Benchmark]: RCFGBuilder took 214.10 ms. Allocated memory is still 92.3 MB. Free memory was 68.8 MB in the beginning and 61.1 MB in the end (delta: 7.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:19,668 INFO L168 Benchmark]: BuchiAutomizer took 1421.82 ms. Allocated memory was 92.3 MB in the beginning and 113.2 MB in the end (delta: 21.0 MB). Free memory was 61.1 MB in the beginning and 71.0 MB in the end (delta: -9.9 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:19,669 INFO L168 Benchmark]: Witness Printer took 37.22 ms. Allocated memory is still 113.2 MB. Free memory was 71.0 MB in the beginning and 68.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:19,672 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 92.3 MB. Free memory is still 73.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 206.19 ms. Allocated memory is still 92.3 MB. Free memory was 56.5 MB in the beginning and 71.0 MB in the end (delta: -14.4 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.34 ms. Allocated memory is still 92.3 MB. Free memory was 70.8 MB in the beginning and 69.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.46 ms. Allocated memory is still 92.3 MB. Free memory was 69.6 MB in the beginning and 68.8 MB in the end (delta: 830.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 214.10 ms. Allocated memory is still 92.3 MB. Free memory was 68.8 MB in the beginning and 61.1 MB in the end (delta: 7.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1421.82 ms. Allocated memory was 92.3 MB in the beginning and 113.2 MB in the end (delta: 21.0 MB). Free memory was 61.1 MB in the beginning and 71.0 MB in the end (delta: -9.9 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.1 GB. * Witness Printer took 37.22 ms. Allocated memory is still 113.2 MB. Free memory was 71.0 MB in the beginning and 68.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * x + 11 and consists of 5 locations. The remainder module has 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.3s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 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 [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 4 SDtfs, 7 SDslu, 6 SDs, 0 SdLazy, 10 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax192 hnf100 lsp51 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq146 hnf94 smp100 dnf100 smp100 tf111 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 34ms 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: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 18]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@53c69599=0, \result=0, x=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 18]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L15] int x; [L16] x = __VERIFIER_nondet_int() [L17] COND TRUE x <= 10 Loop: [L18] COND FALSE !(x > 6) [L17] COND TRUE x <= 10 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...