./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/GCD2.c --full-output -ea --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-restricted-15/GCD2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 f19bc75dcbe901d738916f7ca817c5a4f2f97f97 ........................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.25-8bd4bc6 [2020-07-29 01:29:56,099 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-29 01:29:56,101 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-29 01:29:56,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-29 01:29:56,113 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-29 01:29:56,115 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-29 01:29:56,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-29 01:29:56,118 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-29 01:29:56,120 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-29 01:29:56,120 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-29 01:29:56,121 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-29 01:29:56,123 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-29 01:29:56,123 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-29 01:29:56,124 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-29 01:29:56,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-29 01:29:56,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-29 01:29:56,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-29 01:29:56,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-29 01:29:56,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-29 01:29:56,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-29 01:29:56,138 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-29 01:29:56,139 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-29 01:29:56,141 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-29 01:29:56,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-29 01:29:56,144 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-29 01:29:56,144 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-29 01:29:56,144 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-29 01:29:56,145 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-29 01:29:56,146 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-29 01:29:56,147 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-29 01:29:56,147 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-29 01:29:56,148 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-29 01:29:56,148 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-29 01:29:56,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-29 01:29:56,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-29 01:29:56,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-29 01:29:56,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-29 01:29:56,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-29 01:29:56,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-29 01:29:56,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-29 01:29:56,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-29 01:29:56,154 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-07-29 01:29:56,170 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-29 01:29:56,170 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-29 01:29:56,171 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-29 01:29:56,172 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-29 01:29:56,172 INFO L138 SettingsManager]: * Use SBE=true [2020-07-29 01:29:56,172 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-29 01:29:56,172 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-07-29 01:29:56,172 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-29 01:29:56,173 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-29 01:29:56,173 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-29 01:29:56,173 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-29 01:29:56,173 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-29 01:29:56,174 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-29 01:29:56,174 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-29 01:29:56,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-29 01:29:56,174 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-07-29 01:29:56,174 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-07-29 01:29:56,175 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-07-29 01:29:56,175 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-29 01:29:56,175 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-29 01:29:56,175 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-29 01:29:56,175 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-07-29 01:29:56,176 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-29 01:29:56,176 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-29 01:29:56,176 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-29 01:29:56,176 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-29 01:29:56,176 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-29 01:29:56,177 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-29 01:29:56,177 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-07-29 01:29:56,178 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-07-29 01:29:56,178 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> f19bc75dcbe901d738916f7ca817c5a4f2f97f97 [2020-07-29 01:29:56,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-29 01:29:56,534 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-29 01:29:56,538 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-29 01:29:56,541 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-29 01:29:56,541 INFO L275 PluginConnector]: CDTParser initialized [2020-07-29 01:29:56,542 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/GCD2.c [2020-07-29 01:29:56,609 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2917f58b8/4f0017d5c36d4ed4ae0bef5be56ba6e1/FLAG72400e9c9 [2020-07-29 01:29:57,035 INFO L306 CDTParser]: Found 1 translation units. [2020-07-29 01:29:57,036 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/GCD2.c [2020-07-29 01:29:57,042 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2917f58b8/4f0017d5c36d4ed4ae0bef5be56ba6e1/FLAG72400e9c9 [2020-07-29 01:29:57,451 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2917f58b8/4f0017d5c36d4ed4ae0bef5be56ba6e1 [2020-07-29 01:29:57,455 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-29 01:29:57,458 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-29 01:29:57,459 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-29 01:29:57,459 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-29 01:29:57,463 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-29 01:29:57,464 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:29:57" (1/1) ... [2020-07-29 01:29:57,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a81b1ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:29:57, skipping insertion in model container [2020-07-29 01:29:57,468 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:29:57" (1/1) ... [2020-07-29 01:29:57,476 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-29 01:29:57,495 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-29 01:29:57,660 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:29:57,665 INFO L203 MainTranslator]: Completed pre-run [2020-07-29 01:29:57,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:29:57,696 INFO L208 MainTranslator]: Completed translation [2020-07-29 01:29:57,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:29:57 WrapperNode [2020-07-29 01:29:57,697 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-29 01:29:57,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-29 01:29:57,698 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-29 01:29:57,698 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-29 01:29:57,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:29:57" (1/1) ... [2020-07-29 01:29:57,711 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:29:57" (1/1) ... [2020-07-29 01:29:57,787 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-29 01:29:57,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-29 01:29:57,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-29 01:29:57,788 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-29 01:29:57,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:29:57" (1/1) ... [2020-07-29 01:29:57,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:29:57" (1/1) ... [2020-07-29 01:29:57,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:29:57" (1/1) ... [2020-07-29 01:29:57,800 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:29:57" (1/1) ... [2020-07-29 01:29:57,802 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:29:57" (1/1) ... [2020-07-29 01:29:57,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:29:57" (1/1) ... [2020-07-29 01:29:57,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:29:57" (1/1) ... [2020-07-29 01:29:57,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-29 01:29:57,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-29 01:29:57,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-29 01:29:57,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-29 01:29:57,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:29:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-07-29 01:29:57,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-29 01:29:57,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-29 01:29:58,084 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-29 01:29:58,084 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-29 01:29:58,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:29:58 BoogieIcfgContainer [2020-07-29 01:29:58,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-29 01:29:58,088 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-29 01:29:58,088 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-29 01:29:58,091 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-29 01:29:58,092 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-29 01:29:58,092 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.07 01:29:57" (1/3) ... [2020-07-29 01:29:58,093 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@56006fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.07 01:29:58, skipping insertion in model container [2020-07-29 01:29:58,093 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-29 01:29:58,094 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:29:57" (2/3) ... [2020-07-29 01:29:58,094 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@56006fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.07 01:29:58, skipping insertion in model container [2020-07-29 01:29:58,094 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-29 01:29:58,095 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:29:58" (3/3) ... [2020-07-29 01:29:58,096 INFO L371 chiAutomizerObserver]: Analyzing ICFG GCD2.c [2020-07-29 01:29:58,181 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-29 01:29:58,182 INFO L357 BuchiCegarLoop]: Hoare is false [2020-07-29 01:29:58,182 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-29 01:29:58,183 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-29 01:29:58,183 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-29 01:29:58,183 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-29 01:29:58,184 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-29 01:29:58,184 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-29 01:29:58,227 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2020-07-29 01:29:58,264 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-07-29 01:29:58,264 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 01:29:58,264 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 01:29:58,270 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-29 01:29:58,270 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-29 01:29:58,270 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-29 01:29:58,270 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2020-07-29 01:29:58,273 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-07-29 01:29:58,273 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 01:29:58,273 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 01:29:58,274 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-29 01:29:58,274 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-29 01:29:58,280 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 5#L13-2true [2020-07-29 01:29:58,280 INFO L796 eck$LassoCheckResult]: Loop: 5#L13-2true assume !!((0 != main_~y~0 && main_~x~0 >= 0) && main_~y~0 >= 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 6#L17true assume main_~x~0 == main_~y~0;main_~y~0 := 0; 8#L21-3true main_~y~0 := main_~xtmp~0;main_~x~0 := main_~tmp~0; 5#L13-2true [2020-07-29 01:29:58,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:29:58,285 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-07-29 01:29:58,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:29:58,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3347583] [2020-07-29 01:29:58,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:29:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:29:58,364 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:29:58,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:29:58,372 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:29:58,393 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 01:29:58,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:29:58,395 INFO L82 PathProgramCache]: Analyzing trace with hash 39832, now seen corresponding path program 1 times [2020-07-29 01:29:58,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:29:58,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357059292] [2020-07-29 01:29:58,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:29:58,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:29:58,436 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:29:58,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:29:58,460 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:29:58,467 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 01:29:58,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:29:58,473 INFO L82 PathProgramCache]: Analyzing trace with hash 963353, now seen corresponding path program 1 times [2020-07-29 01:29:58,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:29:58,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795418644] [2020-07-29 01:29:58,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:29:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:29:58,484 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:29:58,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:29:58,491 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:29:58,493 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 01:29:58,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.07 01:29:58 BoogieIcfgContainer [2020-07-29 01:29:58,677 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-29 01:29:58,678 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-29 01:29:58,678 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-29 01:29:58,678 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-29 01:29:58,679 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:29:58" (3/4) ... [2020-07-29 01:29:58,682 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-07-29 01:29:58,729 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-29 01:29:58,729 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-29 01:29:58,732 INFO L168 Benchmark]: Toolchain (without parser) took 1275.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 961.6 MB in the beginning and 1.1 GB in the end (delta: -131.4 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. [2020-07-29 01:29:58,733 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 01:29:58,733 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.13 ms. Allocated memory is still 1.0 GB. Free memory was 961.6 MB in the beginning and 950.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-29 01:29:58,734 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 950.8 MB in the beginning and 1.1 GB in the end (delta: -194.7 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2020-07-29 01:29:58,735 INFO L168 Benchmark]: Boogie Preprocessor took 23.42 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2020-07-29 01:29:58,738 INFO L168 Benchmark]: RCFGBuilder took 275.96 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: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2020-07-29 01:29:58,739 INFO L168 Benchmark]: BuchiAutomizer took 589.33 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: 32.7 MB). Peak memory consumption was 32.7 MB. Max. memory is 11.5 GB. [2020-07-29 01:29:58,740 INFO L168 Benchmark]: Witness Printer took 51.67 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. [2020-07-29 01:29:58,743 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 238.13 ms. Allocated memory is still 1.0 GB. Free memory was 961.6 MB in the beginning and 950.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 90.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 950.8 MB in the beginning and 1.1 GB in the end (delta: -194.7 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.42 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 275.96 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: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 589.33 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: 32.7 MB). Peak memory consumption was 32.7 MB. Max. memory is 11.5 GB. * Witness Printer took 51.67 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. * 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 0.5s and 1 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 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: 13]: 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 {xtmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@282be1f=0, tmp=1, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6aa4314b=0, x=1, y=1} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 13]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int x; [L7] int y; [L8] int tmp; [L9] int xtmp; [L10] x = __VERIFIER_nondet_int() [L11] y = __VERIFIER_nondet_int() Loop: [L13] COND TRUE (y != 0 && x >= 0) && y >= 0 [L14] tmp = y [L15] xtmp = x [L17] COND TRUE x == y [L18] y = 0 [L26] y = xtmp [L27] x = tmp End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...