./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/NO_02.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_4515b28b-7fa1-4533-9944-7dbb987caaef/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4515b28b-7fa1-4533-9944-7dbb987caaef/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4515b28b-7fa1-4533-9944-7dbb987caaef/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4515b28b-7fa1-4533-9944-7dbb987caaef/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/NO_02.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4515b28b-7fa1-4533-9944-7dbb987caaef/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4515b28b-7fa1-4533-9944-7dbb987caaef/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 9c3e090d52ebca0d111383f72b5851cb29661ded ................................................................................................................................................................................................................................................................................................................................. 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 [2020-11-29 19:46:24,900 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:46:24,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:46:24,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:46:24,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:46:24,978 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:46:24,981 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:46:24,986 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:46:24,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:46:24,995 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:46:24,996 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:46:24,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:46:24,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:46:25,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:46:25,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:46:25,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:46:25,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:46:25,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:46:25,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:46:25,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:46:25,027 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:46:25,029 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:46:25,031 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:46:25,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:46:25,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:46:25,042 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:46:25,043 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:46:25,045 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:46:25,046 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:46:25,047 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:46:25,048 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:46:25,049 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:46:25,051 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:46:25,052 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:46:25,054 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:46:25,054 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:46:25,055 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:46:25,055 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:46:25,055 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:46:25,057 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:46:25,057 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:46:25,060 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4515b28b-7fa1-4533-9944-7dbb987caaef/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-29 19:46:25,102 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:46:25,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:46:25,104 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:46:25,104 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:46:25,104 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:46:25,105 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 19:46:25,105 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 19:46:25,105 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 19:46:25,105 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 19:46:25,106 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 19:46:25,107 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 19:46:25,107 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:46:25,107 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 19:46:25,108 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:46:25,108 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:46:25,108 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 19:46:25,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 19:46:25,108 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 19:46:25,109 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:46:25,109 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 19:46:25,109 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:46:25,109 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 19:46:25,110 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:46:25,110 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:46:25,110 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 19:46:25,110 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:46:25,111 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:46:25,111 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:46:25,111 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 19:46:25,112 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 19:46:25,113 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_4515b28b-7fa1-4533-9944-7dbb987caaef/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4515b28b-7fa1-4533-9944-7dbb987caaef/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c3e090d52ebca0d111383f72b5851cb29661ded [2020-11-29 19:46:25,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:46:25,415 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:46:25,418 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:46:25,419 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:46:25,424 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:46:25,426 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4515b28b-7fa1-4533-9944-7dbb987caaef/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/NO_02.c [2020-11-29 19:46:25,501 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4515b28b-7fa1-4533-9944-7dbb987caaef/bin/uautomizer/data/976ef2c2d/afa44cc2194744b28037d315dac48141/FLAGac6437f74 [2020-11-29 19:46:25,943 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:46:25,943 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4515b28b-7fa1-4533-9944-7dbb987caaef/sv-benchmarks/c/termination-restricted-15/NO_02.c [2020-11-29 19:46:25,949 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4515b28b-7fa1-4533-9944-7dbb987caaef/bin/uautomizer/data/976ef2c2d/afa44cc2194744b28037d315dac48141/FLAGac6437f74 [2020-11-29 19:46:26,355 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4515b28b-7fa1-4533-9944-7dbb987caaef/bin/uautomizer/data/976ef2c2d/afa44cc2194744b28037d315dac48141 [2020-11-29 19:46:26,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:46:26,359 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:46:26,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:46:26,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:46:26,369 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:46:26,370 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:46:26" (1/1) ... [2020-11-29 19:46:26,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c9a685d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:46:26, skipping insertion in model container [2020-11-29 19:46:26,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:46:26" (1/1) ... [2020-11-29 19:46:26,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:46:26,397 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:46:26,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:46:26,530 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:46:26,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:46:26,579 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:46:26,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:46:26 WrapperNode [2020-11-29 19:46:26,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:46:26,581 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:46:26,582 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:46:26,582 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:46:26,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:46:26" (1/1) ... [2020-11-29 19:46:26,602 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:46:26" (1/1) ... [2020-11-29 19:46:26,621 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:46:26,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:46:26,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:46:26,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:46:26,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:46:26" (1/1) ... [2020-11-29 19:46:26,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:46:26" (1/1) ... [2020-11-29 19:46:26,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:46:26" (1/1) ... [2020-11-29 19:46:26,631 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:46:26" (1/1) ... [2020-11-29 19:46:26,632 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:46:26" (1/1) ... [2020-11-29 19:46:26,637 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:46:26" (1/1) ... [2020-11-29 19:46:26,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:46:26" (1/1) ... [2020-11-29 19:46:26,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:46:26,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:46:26,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:46:26,640 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:46:26,641 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:46:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4515b28b-7fa1-4533-9944-7dbb987caaef/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:46:26,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:46:26,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:46:26,845 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:46:26,845 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-29 19:46:26,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:46:26 BoogieIcfgContainer [2020-11-29 19:46:26,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:46:26,847 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 19:46:26,848 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 19:46:26,851 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 19:46:26,852 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:46:26,852 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 07:46:26" (1/3) ... [2020-11-29 19:46:26,853 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1c39c317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:46:26, skipping insertion in model container [2020-11-29 19:46:26,853 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:46:26,854 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:46:26" (2/3) ... [2020-11-29 19:46:26,854 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1c39c317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:46:26, skipping insertion in model container [2020-11-29 19:46:26,854 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:46:26,854 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:46:26" (3/3) ... [2020-11-29 19:46:26,855 INFO L373 chiAutomizerObserver]: Analyzing ICFG NO_02.c [2020-11-29 19:46:26,907 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 19:46:26,908 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 19:46:26,908 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 19:46:26,908 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:46:26,908 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:46:26,908 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 19:46:26,908 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:46:26,908 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 19:46:26,920 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-29 19:46:26,938 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 19:46:26,938 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:46:26,939 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:46:26,944 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 19:46:26,945 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 19:46:26,945 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 19:46:26,945 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-29 19:46:26,946 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 19:46:26,946 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:46:26,946 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:46:26,947 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 19:46:26,947 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 19:46:26,954 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_~i~0, main_~j~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 8#L10-2true [2020-11-29 19:46:26,954 INFO L796 eck$LassoCheckResult]: Loop: 8#L10-2true assume !!(main_~i~0 < 100);main_~j~0 := 0; 3#L12-2true assume !(main_~j~0 < 1); 10#L12-3true main_~i~0 := 1 + main_~i~0; 8#L10-2true [2020-11-29 19:46:26,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:46:26,960 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-29 19:46:26,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:46:26,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367176720] [2020-11-29 19:46:26,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:46:27,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:46:27,048 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:46:27,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:46:27,053 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:46:27,068 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:46:27,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:46:27,071 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2020-11-29 19:46:27,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:46:27,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587725137] [2020-11-29 19:46:27,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:46:27,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:46:27,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:46:27,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587725137] [2020-11-29 19:46:27,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:46:27,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:46:27,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892545934] [2020-11-29 19:46:27,141 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 19:46:27,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:46:27,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:46:27,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:46:27,160 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 3 states. [2020-11-29 19:46:27,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:46:27,292 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2020-11-29 19:46:27,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:46:27,294 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 7 transitions. [2020-11-29 19:46:27,295 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 19:46:27,299 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 3 states and 3 transitions. [2020-11-29 19:46:27,300 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-11-29 19:46:27,300 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2020-11-29 19:46:27,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 3 transitions. [2020-11-29 19:46:27,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 19:46:27,301 INFO L691 BuchiCegarLoop]: Abstraction has 3 states and 3 transitions. [2020-11-29 19:46:27,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3 states and 3 transitions. [2020-11-29 19:46:27,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3 to 3. [2020-11-29 19:46:27,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 19:46:27,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3 transitions. [2020-11-29 19:46:27,332 INFO L714 BuchiCegarLoop]: Abstraction has 3 states and 3 transitions. [2020-11-29 19:46:27,333 INFO L594 BuchiCegarLoop]: Abstraction has 3 states and 3 transitions. [2020-11-29 19:46:27,333 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 19:46:27,333 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states and 3 transitions. [2020-11-29 19:46:27,333 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 19:46:27,334 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:46:27,334 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:46:27,334 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-29 19:46:27,334 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-29 19:46:27,335 INFO L794 eck$LassoCheckResult]: Stem: 25#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 26#L10-2 assume !!(main_~i~0 < 100);main_~j~0 := 0; 24#L12-2 [2020-11-29 19:46:27,335 INFO L796 eck$LassoCheckResult]: Loop: 24#L12-2 assume !!(main_~j~0 < 1);main_~j~0 := main_~j~0; 24#L12-2 [2020-11-29 19:46:27,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:46:27,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-11-29 19:46:27,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:46:27,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643473204] [2020-11-29 19:46:27,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:46:27,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:46:27,346 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:46:27,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:46:27,353 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:46:27,354 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:46:27,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:46:27,355 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2020-11-29 19:46:27,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:46:27,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603658350] [2020-11-29 19:46:27,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:46:27,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:46:27,361 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:46:27,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:46:27,365 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:46:27,366 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:46:27,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:46:27,368 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2020-11-29 19:46:27,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:46:27,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972871995] [2020-11-29 19:46:27,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:46:27,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:46:27,378 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:46:27,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:46:27,382 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:46:27,384 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:46:27,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 07:46:27 BoogieIcfgContainer [2020-11-29 19:46:27,527 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 19:46:27,529 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:46:27,529 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:46:27,530 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:46:27,530 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:46:26" (3/4) ... [2020-11-29 19:46:27,533 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-29 19:46:27,581 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4515b28b-7fa1-4533-9944-7dbb987caaef/bin/uautomizer/witness.graphml [2020-11-29 19:46:27,581 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:46:27,583 INFO L168 Benchmark]: Toolchain (without parser) took 1223.11 ms. Allocated memory is still 111.1 MB. Free memory was 83.9 MB in the beginning and 87.0 MB in the end (delta: -3.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:46:27,584 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 83.9 MB. Free memory was 42.1 MB in the beginning and 42.0 MB in the end (delta: 78.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:46:27,585 INFO L168 Benchmark]: CACSL2BoogieTranslator took 219.30 ms. Allocated memory is still 111.1 MB. Free memory was 83.6 MB in the beginning and 90.4 MB in the end (delta: -6.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:46:27,586 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.09 ms. Allocated memory is still 111.1 MB. Free memory was 90.0 MB in the beginning and 88.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:46:27,587 INFO L168 Benchmark]: Boogie Preprocessor took 16.77 ms. Allocated memory is still 111.1 MB. Free memory was 88.9 MB in the beginning and 88.1 MB in the end (delta: 866.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:46:27,588 INFO L168 Benchmark]: RCFGBuilder took 206.70 ms. Allocated memory is still 111.1 MB. Free memory was 88.1 MB in the beginning and 80.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:46:27,589 INFO L168 Benchmark]: BuchiAutomizer took 680.09 ms. Allocated memory is still 111.1 MB. Free memory was 80.1 MB in the beginning and 88.9 MB in the end (delta: -8.8 MB). Peak memory consumption was 28.9 MB. Max. memory is 16.1 GB. [2020-11-29 19:46:27,590 INFO L168 Benchmark]: Witness Printer took 52.24 ms. Allocated memory is still 111.1 MB. Free memory was 88.9 MB in the beginning and 87.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:46:27,596 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 83.9 MB. Free memory was 42.1 MB in the beginning and 42.0 MB in the end (delta: 78.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 219.30 ms. Allocated memory is still 111.1 MB. Free memory was 83.6 MB in the beginning and 90.4 MB in the end (delta: -6.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.09 ms. Allocated memory is still 111.1 MB. Free memory was 90.0 MB in the beginning and 88.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 16.77 ms. Allocated memory is still 111.1 MB. Free memory was 88.9 MB in the beginning and 88.1 MB in the end (delta: 866.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 206.70 ms. Allocated memory is still 111.1 MB. Free memory was 88.1 MB in the beginning and 80.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 680.09 ms. Allocated memory is still 111.1 MB. Free memory was 80.1 MB in the beginning and 88.9 MB in the end (delta: -8.8 MB). Peak memory consumption was 28.9 MB. Max. memory is 16.1 GB. * Witness Printer took 52.24 ms. Allocated memory is still 111.1 MB. Free memory was 88.9 MB in the beginning and 87.0 MB in the end (delta: 1.9 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 (1 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.1 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.6s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.3s. Construction of modules took 0.1s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 3 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 6 SDtfs, 0 SDslu, 4 SDs, 0 SdLazy, 2 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 12]: 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 {\result=0, i=0, j=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 12]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int j; [L8] i = 0 [L10] COND TRUE i < 100 [L11] j = 0 Loop: [L12] COND TRUE j < 1 [L13] j = j+0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...