./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/TwoFloatInterv.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_245be4c4-00d3-4134-9572-4f8211f3bf4d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_245be4c4-00d3-4134-9572-4f8211f3bf4d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_245be4c4-00d3-4134-9572-4f8211f3bf4d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_245be4c4-00d3-4134-9572-4f8211f3bf4d/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/TwoFloatInterv.c -s /tmp/vcloud-vcloud-master/worker/run_dir_245be4c4-00d3-4134-9572-4f8211f3bf4d/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_245be4c4-00d3-4134-9572-4f8211f3bf4d/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 c81b642bdc34318660f50d5b284278ba8988a3d4 ................................................................................................................................................................................................................................................................................................................... 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 0.1.24-6b5699a [2019-11-25 08:56:20,082 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:56:20,084 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:56:20,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:56:20,099 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:56:20,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:56:20,102 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:56:20,110 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:56:20,114 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:56:20,117 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:56:20,118 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:56:20,119 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:56:20,119 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:56:20,121 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:56:20,122 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:56:20,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:56:20,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:56:20,125 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:56:20,127 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:56:20,130 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:56:20,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:56:20,136 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:56:20,137 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:56:20,138 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:56:20,140 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:56:20,140 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:56:20,140 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:56:20,142 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:56:20,142 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:56:20,143 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:56:20,144 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:56:20,144 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:56:20,145 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:56:20,146 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:56:20,146 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:56:20,146 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:56:20,147 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:56:20,147 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:56:20,147 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:56:20,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:56:20,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:56:20,150 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_245be4c4-00d3-4134-9572-4f8211f3bf4d/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-25 08:56:20,174 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:56:20,175 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:56:20,176 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:56:20,176 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:56:20,176 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:56:20,176 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-25 08:56:20,176 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-25 08:56:20,176 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-25 08:56:20,177 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-25 08:56:20,177 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-25 08:56:20,177 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-25 08:56:20,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:56:20,177 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:56:20,178 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:56:20,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:56:20,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-25 08:56:20,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-25 08:56:20,178 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-25 08:56:20,178 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:56:20,179 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-25 08:56:20,179 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:56:20,179 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-25 08:56:20,179 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:56:20,179 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:56:20,179 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-25 08:56:20,180 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:56:20,180 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:56:20,180 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-25 08:56:20,192 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-25 08:56:20,192 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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_245be4c4-00d3-4134-9572-4f8211f3bf4d/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 -> c81b642bdc34318660f50d5b284278ba8988a3d4 [2019-11-25 08:56:20,321 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:56:20,331 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:56:20,334 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:56:20,335 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:56:20,335 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:56:20,336 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_245be4c4-00d3-4134-9572-4f8211f3bf4d/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/TwoFloatInterv.c [2019-11-25 08:56:20,388 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_245be4c4-00d3-4134-9572-4f8211f3bf4d/bin/uautomizer/data/3fb779617/ba5afff3106347d8acf7aae6956ad0b5/FLAGf3f3b11bf [2019-11-25 08:56:20,801 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:56:20,801 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_245be4c4-00d3-4134-9572-4f8211f3bf4d/sv-benchmarks/c/termination-restricted-15/TwoFloatInterv.c [2019-11-25 08:56:20,808 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_245be4c4-00d3-4134-9572-4f8211f3bf4d/bin/uautomizer/data/3fb779617/ba5afff3106347d8acf7aae6956ad0b5/FLAGf3f3b11bf [2019-11-25 08:56:21,169 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_245be4c4-00d3-4134-9572-4f8211f3bf4d/bin/uautomizer/data/3fb779617/ba5afff3106347d8acf7aae6956ad0b5 [2019-11-25 08:56:21,172 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:56:21,173 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:56:21,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:56:21,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:56:21,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:56:21,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:56:21" (1/1) ... [2019-11-25 08:56:21,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57ca8f1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:21, skipping insertion in model container [2019-11-25 08:56:21,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:56:21" (1/1) ... [2019-11-25 08:56:21,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:56:21,194 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:56:21,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:56:21,314 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:56:21,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:56:21,402 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:56:21,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:21 WrapperNode [2019-11-25 08:56:21,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:56:21,403 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:56:21,403 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:56:21,403 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:56:21,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:21" (1/1) ... [2019-11-25 08:56:21,415 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:21" (1/1) ... [2019-11-25 08:56:21,429 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:56:21,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:56:21,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:56:21,430 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:56:21,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:21" (1/1) ... [2019-11-25 08:56:21,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:21" (1/1) ... [2019-11-25 08:56:21,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:21" (1/1) ... [2019-11-25 08:56:21,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:21" (1/1) ... [2019-11-25 08:56:21,444 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:21" (1/1) ... [2019-11-25 08:56:21,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:21" (1/1) ... [2019-11-25 08:56:21,449 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:21" (1/1) ... [2019-11-25 08:56:21,450 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:56:21,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:56:21,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:56:21,451 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:56:21,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_245be4c4-00d3-4134-9572-4f8211f3bf4d/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 [2019-11-25 08:56:21,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:56:21,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:56:21,670 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:56:21,670 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-25 08:56:21,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:21 BoogieIcfgContainer [2019-11-25 08:56:21,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:56:21,671 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-25 08:56:21,671 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-25 08:56:21,674 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-25 08:56:21,674 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:56:21,674 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 25.11 08:56:21" (1/3) ... [2019-11-25 08:56:21,675 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@42b57a26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:56:21, skipping insertion in model container [2019-11-25 08:56:21,675 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:56:21,675 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:21" (2/3) ... [2019-11-25 08:56:21,676 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@42b57a26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:56:21, skipping insertion in model container [2019-11-25 08:56:21,676 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:56:21,676 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:21" (3/3) ... [2019-11-25 08:56:21,677 INFO L371 chiAutomizerObserver]: Analyzing ICFG TwoFloatInterv.c [2019-11-25 08:56:21,714 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-25 08:56:21,714 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-25 08:56:21,714 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-25 08:56:21,714 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:56:21,715 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:56:21,715 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-25 08:56:21,715 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:56:21,715 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-25 08:56:21,727 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2019-11-25 08:56:21,745 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-25 08:56:21,745 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:56:21,745 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:56:21,751 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-25 08:56:21,751 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:56:21,751 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-25 08:56:21,751 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2019-11-25 08:56:21,752 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-25 08:56:21,753 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:56:21,753 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:56:21,753 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-25 08:56:21,753 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:56:21,759 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 3#L16-1true [2019-11-25 08:56:21,759 INFO L796 eck$LassoCheckResult]: Loop: 3#L16-1true assume !!(main_~i~0 > 0 && main_~i~0 < 50); 4#L10true assume main_~i~0 < 20;main_~i~0 := main_~i~0 - 1; 10#L10-2true assume main_~i~0 > 10;main_~i~0 := 1 + main_~i~0; 7#L13-1true assume 30 <= main_~i~0 && main_~i~0 <= 40;main_~i~0 := main_~i~0 - 1; 3#L16-1true [2019-11-25 08:56:21,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:21,763 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-25 08:56:21,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:21,770 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631764984] [2019-11-25 08:56:21,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:21,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:21,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:21,845 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:21,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:21,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1234538, now seen corresponding path program 1 times [2019-11-25 08:56:21,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:21,846 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895805091] [2019-11-25 08:56:21,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:21,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:21,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:21,911 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895805091] [2019-11-25 08:56:21,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:21,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-25 08:56:21,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999048568] [2019-11-25 08:56:21,917 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-25 08:56:21,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:21,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:56:21,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:56:21,930 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 4 states. [2019-11-25 08:56:22,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:22,005 INFO L93 Difference]: Finished difference Result 20 states and 25 transitions. [2019-11-25 08:56:22,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:56:22,007 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 25 transitions. [2019-11-25 08:56:22,009 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2019-11-25 08:56:22,012 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 12 states and 16 transitions. [2019-11-25 08:56:22,013 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2019-11-25 08:56:22,014 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-11-25 08:56:22,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 16 transitions. [2019-11-25 08:56:22,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:56:22,015 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2019-11-25 08:56:22,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 16 transitions. [2019-11-25 08:56:22,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 9. [2019-11-25 08:56:22,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-25 08:56:22,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 13 transitions. [2019-11-25 08:56:22,038 INFO L711 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2019-11-25 08:56:22,038 INFO L591 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2019-11-25 08:56:22,038 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-25 08:56:22,038 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 13 transitions. [2019-11-25 08:56:22,039 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-11-25 08:56:22,039 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:56:22,039 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:56:22,040 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-25 08:56:22,040 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:56:22,040 INFO L794 eck$LassoCheckResult]: Stem: 42#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 43#L16-1 [2019-11-25 08:56:22,040 INFO L796 eck$LassoCheckResult]: Loop: 43#L16-1 assume !!(main_~i~0 > 0 && main_~i~0 < 50); 45#L10 assume !(main_~i~0 < 20); 46#L10-2 assume main_~i~0 > 10;main_~i~0 := 1 + main_~i~0; 47#L13-1 assume 30 <= main_~i~0 && main_~i~0 <= 40;main_~i~0 := main_~i~0 - 1; 43#L16-1 [2019-11-25 08:56:22,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:22,041 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2019-11-25 08:56:22,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:22,041 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429136956] [2019-11-25 08:56:22,041 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:22,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:22,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:22,046 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:22,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:22,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1236460, now seen corresponding path program 1 times [2019-11-25 08:56:22,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:22,047 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103436639] [2019-11-25 08:56:22,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:22,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:22,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:22,057 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:22,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:22,058 INFO L82 PathProgramCache]: Analyzing trace with hash 29865611, now seen corresponding path program 1 times [2019-11-25 08:56:22,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:22,058 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332335652] [2019-11-25 08:56:22,058 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:22,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:22,069 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:22,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 25.11 08:56:22 BoogieIcfgContainer [2019-11-25 08:56:22,189 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-25 08:56:22,189 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:56:22,189 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:56:22,189 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:56:22,190 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:21" (3/4) ... [2019-11-25 08:56:22,192 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-11-25 08:56:22,220 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_245be4c4-00d3-4134-9572-4f8211f3bf4d/bin/uautomizer/witness.graphml [2019-11-25 08:56:22,220 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:56:22,222 INFO L168 Benchmark]: Toolchain (without parser) took 1048.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -112.0 MB). Peak memory consumption was 12.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:22,223 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:56:22,223 INFO L168 Benchmark]: CACSL2BoogieTranslator took 229.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -169.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:22,224 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.55 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:56:22,224 INFO L168 Benchmark]: Boogie Preprocessor took 20.36 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:56:22,225 INFO L168 Benchmark]: RCFGBuilder took 220.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:22,225 INFO L168 Benchmark]: BuchiAutomizer took 517.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 35.6 MB). Peak memory consumption was 35.6 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:22,226 INFO L168 Benchmark]: Witness Printer took 31.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:22,229 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 229.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -169.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.55 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.36 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 220.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 517.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 35.6 MB). Peak memory consumption was 35.6 MB. Max. memory is 11.5 GB. * Witness Printer took 31.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 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 4 locations. The remainder module has 9 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.4s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.3s. Construction of modules took 0.0s. 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, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 9 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 12 SDtfs, 8 SDslu, 6 SDs, 0 SdLazy, 25 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s 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: 9]: 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@622c0daa=0, \result=0, i=29} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 9]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() Loop: [L9] COND TRUE i > 0 && i < 50 [L10] COND FALSE !(i < 20) [L13] COND TRUE i > 10 [L14] i = i+1 [L16] COND TRUE 30 <= i && i <= 40 [L17] i = i-1 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...