./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/Rotation180-1.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_a42dda72-a0c5-463b-b361-c73eefad07d7/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a42dda72-a0c5-463b-b361-c73eefad07d7/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a42dda72-a0c5-463b-b361-c73eefad07d7/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a42dda72-a0c5-463b-b361-c73eefad07d7/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Rotation180-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a42dda72-a0c5-463b-b361-c73eefad07d7/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a42dda72-a0c5-463b-b361-c73eefad07d7/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 2c72d82c532a02e29872b33df90bf95e27cdfe45 .................................................................................................................................................................................................................................................................................. 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 18:26:50,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 18:26:50,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 18:26:50,055 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 18:26:50,057 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 18:26:50,058 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 18:26:50,060 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 18:26:50,063 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 18:26:50,065 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 18:26:50,066 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 18:26:50,067 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 18:26:50,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 18:26:50,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 18:26:50,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 18:26:50,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 18:26:50,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 18:26:50,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 18:26:50,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 18:26:50,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 18:26:50,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 18:26:50,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 18:26:50,087 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 18:26:50,089 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 18:26:50,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 18:26:50,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 18:26:50,098 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 18:26:50,099 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 18:26:50,101 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 18:26:50,101 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 18:26:50,105 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 18:26:50,109 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 18:26:50,110 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 18:26:50,111 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 18:26:50,113 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 18:26:50,114 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 18:26:50,115 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 18:26:50,116 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 18:26:50,116 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 18:26:50,117 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 18:26:50,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 18:26:50,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 18:26:50,120 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a42dda72-a0c5-463b-b361-c73eefad07d7/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-29 18:26:50,165 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 18:26:50,165 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 18:26:50,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 18:26:50,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 18:26:50,167 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 18:26:50,168 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 18:26:50,168 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 18:26:50,168 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 18:26:50,168 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 18:26:50,169 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 18:26:50,170 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 18:26:50,170 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 18:26:50,170 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 18:26:50,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 18:26:50,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 18:26:50,171 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 18:26:50,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 18:26:50,171 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 18:26:50,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 18:26:50,172 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 18:26:50,172 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 18:26:50,172 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 18:26:50,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 18:26:50,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 18:26:50,173 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 18:26:50,173 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 18:26:50,173 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 18:26:50,174 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 18:26:50,174 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 18:26:50,176 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 18:26:50,177 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_a42dda72-a0c5-463b-b361-c73eefad07d7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a42dda72-a0c5-463b-b361-c73eefad07d7/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c72d82c532a02e29872b33df90bf95e27cdfe45 [2020-11-29 18:26:50,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 18:26:50,482 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 18:26:50,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 18:26:50,486 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 18:26:50,487 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 18:26:50,488 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a42dda72-a0c5-463b-b361-c73eefad07d7/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/Rotation180-1.c [2020-11-29 18:26:50,555 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a42dda72-a0c5-463b-b361-c73eefad07d7/bin/uautomizer/data/5a9f22ec6/3177fb486c2c41199bd1baabf4ac0dea/FLAG3e1970486 [2020-11-29 18:26:50,974 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 18:26:50,975 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a42dda72-a0c5-463b-b361-c73eefad07d7/sv-benchmarks/c/termination-crafted/Rotation180-1.c [2020-11-29 18:26:50,980 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a42dda72-a0c5-463b-b361-c73eefad07d7/bin/uautomizer/data/5a9f22ec6/3177fb486c2c41199bd1baabf4ac0dea/FLAG3e1970486 [2020-11-29 18:26:51,381 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a42dda72-a0c5-463b-b361-c73eefad07d7/bin/uautomizer/data/5a9f22ec6/3177fb486c2c41199bd1baabf4ac0dea [2020-11-29 18:26:51,384 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 18:26:51,385 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 18:26:51,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 18:26:51,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 18:26:51,390 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 18:26:51,391 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:26:51" (1/1) ... [2020-11-29 18:26:51,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55a71875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:26:51, skipping insertion in model container [2020-11-29 18:26:51,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:26:51" (1/1) ... [2020-11-29 18:26:51,400 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 18:26:51,412 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 18:26:51,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:26:51,552 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 18:26:51,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:26:51,604 INFO L208 MainTranslator]: Completed translation [2020-11-29 18:26:51,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:26:51 WrapperNode [2020-11-29 18:26:51,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 18:26:51,606 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 18:26:51,616 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 18:26:51,616 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 18:26:51,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:26:51" (1/1) ... [2020-11-29 18:26:51,630 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:26:51" (1/1) ... [2020-11-29 18:26:51,651 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 18:26:51,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 18:26:51,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 18:26:51,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 18:26:51,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:26:51" (1/1) ... [2020-11-29 18:26:51,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:26:51" (1/1) ... [2020-11-29 18:26:51,663 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:26:51" (1/1) ... [2020-11-29 18:26:51,664 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:26:51" (1/1) ... [2020-11-29 18:26:51,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:26:51" (1/1) ... [2020-11-29 18:26:51,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:26:51" (1/1) ... [2020-11-29 18:26:51,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:26:51" (1/1) ... [2020-11-29 18:26:51,673 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 18:26:51,674 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 18:26:51,674 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 18:26:51,675 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 18:26:51,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:26:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a42dda72-a0c5-463b-b361-c73eefad07d7/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 18:26:51,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 18:26:51,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 18:26:51,916 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 18:26:51,917 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-29 18:26:51,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:26:51 BoogieIcfgContainer [2020-11-29 18:26:51,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 18:26:51,919 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 18:26:51,919 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 18:26:51,922 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 18:26:51,922 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 18:26:51,922 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 06:26:51" (1/3) ... [2020-11-29 18:26:51,924 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2dfa0712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 06:26:51, skipping insertion in model container [2020-11-29 18:26:51,924 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 18:26:51,924 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:26:51" (2/3) ... [2020-11-29 18:26:51,924 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2dfa0712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 06:26:51, skipping insertion in model container [2020-11-29 18:26:51,924 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 18:26:51,925 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:26:51" (3/3) ... [2020-11-29 18:26:51,926 INFO L373 chiAutomizerObserver]: Analyzing ICFG Rotation180-1.c [2020-11-29 18:26:51,977 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 18:26:51,978 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 18:26:51,978 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 18:26:51,978 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 18:26:51,978 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 18:26:51,978 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 18:26:51,979 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 18:26:51,979 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 18:26:51,998 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-29 18:26:52,014 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 18:26:52,014 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:26:52,014 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:26:52,020 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-29 18:26:52,020 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-29 18:26:52,020 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 18:26:52,021 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-29 18:26:52,022 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 18:26:52,022 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:26:52,022 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:26:52,022 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-29 18:26:52,023 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-29 18:26:52,029 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~oldx~0, main_~x~0, main_~y~0;havoc main_~oldx~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 3#L21true assume !!(main_~x~0 >= -2147483647); 6#L22true assume !!(main_~y~0 >= -2147483647); 4#L23-2true [2020-11-29 18:26:52,030 INFO L796 eck$LassoCheckResult]: Loop: 4#L23-2true assume !!(0 != ~unnamed0~0~true);main_~oldx~0 := main_~x~0;main_~x~0 := -main_~y~0;main_~y~0 := main_~oldx~0; 4#L23-2true [2020-11-29 18:26:52,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:26:52,036 INFO L82 PathProgramCache]: Analyzing trace with hash 30949, now seen corresponding path program 1 times [2020-11-29 18:26:52,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:26:52,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457006012] [2020-11-29 18:26:52,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:26:52,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:26:52,112 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:26:52,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:26:52,118 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:26:52,135 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:26:52,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:26:52,138 INFO L82 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 1 times [2020-11-29 18:26:52,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:26:52,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617209695] [2020-11-29 18:26:52,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:26:52,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:26:52,148 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:26:52,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:26:52,152 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:26:52,154 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:26:52,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:26:52,156 INFO L82 PathProgramCache]: Analyzing trace with hash 959439, now seen corresponding path program 1 times [2020-11-29 18:26:52,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:26:52,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013996979] [2020-11-29 18:26:52,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:26:52,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:26:52,165 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:26:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:26:52,171 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:26:52,173 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:26:52,343 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 10 [2020-11-29 18:26:52,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 06:26:52 BoogieIcfgContainer [2020-11-29 18:26:52,470 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 18:26:52,471 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 18:26:52,471 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 18:26:52,471 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 18:26:52,471 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:26:51" (3/4) ... [2020-11-29 18:26:52,479 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-29 18:26:52,538 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a42dda72-a0c5-463b-b361-c73eefad07d7/bin/uautomizer/witness.graphml [2020-11-29 18:26:52,538 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 18:26:52,540 INFO L168 Benchmark]: Toolchain (without parser) took 1153.95 ms. Allocated memory is still 111.1 MB. Free memory was 81.9 MB in the beginning and 57.8 MB in the end (delta: 24.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:26:52,541 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 81.8 MB. Free memory is still 39.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:26:52,546 INFO L168 Benchmark]: CACSL2BoogieTranslator took 218.58 ms. Allocated memory is still 111.1 MB. Free memory was 81.7 MB in the beginning and 90.2 MB in the end (delta: -8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 18:26:52,547 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.67 ms. Allocated memory is still 111.1 MB. Free memory was 90.2 MB in the beginning and 88.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:26:52,548 INFO L168 Benchmark]: Boogie Preprocessor took 19.51 ms. Allocated memory is still 111.1 MB. Free memory was 88.8 MB in the beginning and 88.0 MB in the end (delta: 854.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:26:52,549 INFO L168 Benchmark]: RCFGBuilder took 244.37 ms. Allocated memory is still 111.1 MB. Free memory was 88.0 MB in the beginning and 80.0 MB in the end (delta: 7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 18:26:52,549 INFO L168 Benchmark]: BuchiAutomizer took 550.70 ms. Allocated memory is still 111.1 MB. Free memory was 79.6 MB in the beginning and 59.5 MB in the end (delta: 20.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-29 18:26:52,553 INFO L168 Benchmark]: Witness Printer took 67.53 ms. Allocated memory is still 111.1 MB. Free memory was 59.5 MB in the beginning and 57.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:26:52,558 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 81.8 MB. Free memory is still 39.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 218.58 ms. Allocated memory is still 111.1 MB. Free memory was 81.7 MB in the beginning and 90.2 MB in the end (delta: -8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.67 ms. Allocated memory is still 111.1 MB. Free memory was 90.2 MB in the beginning and 88.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.51 ms. Allocated memory is still 111.1 MB. Free memory was 88.8 MB in the beginning and 88.0 MB in the end (delta: 854.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 244.37 ms. Allocated memory is still 111.1 MB. Free memory was 88.0 MB in the beginning and 80.0 MB in the end (delta: 7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 550.70 ms. Allocated memory is still 111.1 MB. Free memory was 79.6 MB in the beginning and 59.5 MB in the end (delta: 20.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 67.53 ms. Allocated memory is still 111.1 MB. Free memory was 59.5 MB in the beginning and 57.8 MB in the end (delta: 1.7 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 Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.4s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: No data available LassoAnalysisResults: nont1 unkn0 SFLI0 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: 23]: 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 {oldx=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2cd6bf4=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@47ab1053=0, x=0, y=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 23]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L15] int oldx; [L16] int x; [L17] int y; [L18] x = __VERIFIER_nondet_int() [L19] y = __VERIFIER_nondet_int() [L21] COND FALSE !(!(x>=-2147483647)) [L22] COND FALSE !(!(y>=-2147483647)) Loop: [L23] COND TRUE \read(true) [L24] oldx = x [L25] x = -y [L26] y = oldx End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...