./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted/Bangalore_v2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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-crafted/Bangalore_v2.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 d3e2a15dfa55cea18ccb0a7fc8d29509c935fecf ........................................................................................................................................................................................................................................................................ 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 0.1.25-9a8b2e8 [2020-10-20 06:32:28,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:32:28,538 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:32:28,563 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:32:28,564 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:32:28,565 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:32:28,566 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:32:28,568 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:32:28,570 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:32:28,571 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:32:28,572 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:32:28,574 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:32:28,574 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:32:28,575 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:32:28,576 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:32:28,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:32:28,578 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:32:28,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:32:28,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:32:28,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:32:28,598 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:32:28,599 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:32:28,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:32:28,603 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:32:28,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:32:28,609 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:32:28,609 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:32:28,612 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:32:28,612 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:32:28,615 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:32:28,615 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:32:28,616 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:32:28,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:32:28,620 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:32:28,622 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:32:28,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:32:28,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:32:28,623 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:32:28,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:32:28,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:32:28,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:32:28,626 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-20 06:32:28,653 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:32:28,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:32:28,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:32:28,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:32:28,655 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:32:28,656 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 06:32:28,656 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 06:32:28,656 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 06:32:28,656 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 06:32:28,657 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 06:32:28,657 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 06:32:28,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:32:28,658 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:32:28,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:32:28,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:32:28,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 06:32:28,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 06:32:28,659 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 06:32:28,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:32:28,659 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 06:32:28,660 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:32:28,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 06:32:28,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:32:28,661 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:32:28,661 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 06:32:28,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:32:28,661 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:32:28,662 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:32:28,662 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 06:32:28,663 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 06:32:28,663 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 -> d3e2a15dfa55cea18ccb0a7fc8d29509c935fecf [2020-10-20 06:32:28,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:32:28,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:32:28,897 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:32:28,899 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:32:28,900 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:32:28,900 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Bangalore_v2.c [2020-10-20 06:32:28,978 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce6a2297f/c15b4ba529bc437784f09e532bd4ee08/FLAG704612342 [2020-10-20 06:32:29,541 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:32:29,542 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Bangalore_v2.c [2020-10-20 06:32:29,550 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce6a2297f/c15b4ba529bc437784f09e532bd4ee08/FLAG704612342 [2020-10-20 06:32:29,872 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce6a2297f/c15b4ba529bc437784f09e532bd4ee08 [2020-10-20 06:32:29,876 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:32:29,882 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:32:29,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:32:29,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:32:29,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:32:29,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:32:29" (1/1) ... [2020-10-20 06:32:29,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c131cf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:32:29, skipping insertion in model container [2020-10-20 06:32:29,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:32:29" (1/1) ... [2020-10-20 06:32:29,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:32:29,914 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:32:30,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:32:30,091 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:32:30,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:32:30,116 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:32:30,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:32:30 WrapperNode [2020-10-20 06:32:30,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:32:30,117 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:32:30,117 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:32:30,118 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:32:30,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:32:30" (1/1) ... [2020-10-20 06:32:30,131 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:32:30" (1/1) ... [2020-10-20 06:32:30,146 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:32:30,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:32:30,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:32:30,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:32:30,155 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:32:30" (1/1) ... [2020-10-20 06:32:30,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:32:30" (1/1) ... [2020-10-20 06:32:30,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:32:30" (1/1) ... [2020-10-20 06:32:30,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:32:30" (1/1) ... [2020-10-20 06:32:30,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:32:30" (1/1) ... [2020-10-20 06:32:30,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:32:30" (1/1) ... [2020-10-20 06:32:30,164 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:32:30" (1/1) ... [2020-10-20 06:32:30,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:32:30,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:32:30,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:32:30,166 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:32:30,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:32:30" (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 [2020-10-20 06:32:30,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:32:30,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:32:30,373 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:32:30,373 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-20 06:32:30,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:32:30 BoogieIcfgContainer [2020-10-20 06:32:30,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:32:30,376 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 06:32:30,376 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 06:32:30,380 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 06:32:30,381 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:32:30,381 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 06:32:29" (1/3) ... [2020-10-20 06:32:30,383 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@13eec450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:32:30, skipping insertion in model container [2020-10-20 06:32:30,383 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:32:30,383 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:32:30" (2/3) ... [2020-10-20 06:32:30,384 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@13eec450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:32:30, skipping insertion in model container [2020-10-20 06:32:30,384 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:32:30,384 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:32:30" (3/3) ... [2020-10-20 06:32:30,386 INFO L373 chiAutomizerObserver]: Analyzing ICFG Bangalore_v2.c [2020-10-20 06:32:30,434 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 06:32:30,434 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 06:32:30,435 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 06:32:30,435 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:32:30,435 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:32:30,435 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 06:32:30,435 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:32:30,436 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 06:32:30,451 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-10-20 06:32:30,470 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-20 06:32:30,470 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:32:30,471 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:32:30,476 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-20 06:32:30,476 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-20 06:32:30,477 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 06:32:30,477 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-10-20 06:32:30,478 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-20 06:32:30,478 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:32:30,478 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:32:30,478 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-20 06:32:30,479 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-20 06:32:30,485 INFO L794 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 7#L16true assume main_~y~0 >= 0; 3#L17-2true [2020-10-20 06:32:30,485 INFO L796 eck$LassoCheckResult]: Loop: 3#L17-2true assume !!(main_~x~0 >= 0);main_~x~0 := main_~x~0 - main_~y~0; 3#L17-2true [2020-10-20 06:32:30,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:32:30,491 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2020-10-20 06:32:30,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:32:30,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725902488] [2020-10-20 06:32:30,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:32:30,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:32:30,578 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:32:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:32:30,583 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:32:30,602 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:32:30,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:32:30,604 INFO L82 PathProgramCache]: Analyzing trace with hash 44, now seen corresponding path program 1 times [2020-10-20 06:32:30,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:32:30,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465819067] [2020-10-20 06:32:30,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:32:30,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:32:30,614 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:32:30,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:32:30,617 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:32:30,619 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:32:30,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:32:30,628 INFO L82 PathProgramCache]: Analyzing trace with hash 30889, now seen corresponding path program 1 times [2020-10-20 06:32:30,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:32:30,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466045804] [2020-10-20 06:32:30,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:32:30,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:32:30,648 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:32:30,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:32:30,658 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:32:30,662 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:32:30,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 06:32:30 BoogieIcfgContainer [2020-10-20 06:32:30,983 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 06:32:30,984 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:32:30,984 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:32:30,984 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:32:30,985 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:32:30" (3/4) ... [2020-10-20 06:32:30,988 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-10-20 06:32:31,025 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:32:31,026 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:32:31,028 INFO L168 Benchmark]: Toolchain (without parser) took 1149.59 ms. Allocated memory was 40.9 MB in the beginning and 43.5 MB in the end (delta: 2.6 MB). Free memory was 19.2 MB in the beginning and 16.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 5.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:32:31,029 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 31.5 MB. Free memory was 7.5 MB in the beginning and 7.5 MB in the end (delta: 63.0 kB). Peak memory consumption was 63.0 kB. Max. memory is 14.3 GB. [2020-10-20 06:32:31,031 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.88 ms. Allocated memory was 40.9 MB in the beginning and 41.9 MB in the end (delta: 1.0 MB). Free memory was 18.3 MB in the beginning and 20.7 MB in the end (delta: -2.3 MB). Peak memory consumption was 8.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:32:31,032 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.76 ms. Allocated memory is still 41.9 MB. Free memory was 20.7 MB in the beginning and 19.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:32:31,033 INFO L168 Benchmark]: Boogie Preprocessor took 18.92 ms. Allocated memory is still 41.9 MB. Free memory was 19.2 MB in the beginning and 18.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:32:31,034 INFO L168 Benchmark]: RCFGBuilder took 210.21 ms. Allocated memory was 41.9 MB in the beginning and 43.0 MB in the end (delta: 1.0 MB). Free memory was 18.0 MB in the beginning and 24.1 MB in the end (delta: -6.1 MB). Peak memory consumption was 7.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:32:31,035 INFO L168 Benchmark]: BuchiAutomizer took 607.23 ms. Allocated memory was 43.0 MB in the beginning and 43.5 MB in the end (delta: 524.3 kB). Free memory was 23.9 MB in the beginning and 18.9 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:32:31,035 INFO L168 Benchmark]: Witness Printer took 42.11 ms. Allocated memory is still 43.5 MB. Free memory was 18.9 MB in the beginning and 16.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:32:31,041 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 31.5 MB. Free memory was 7.5 MB in the beginning and 7.5 MB in the end (delta: 63.0 kB). Peak memory consumption was 63.0 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 233.88 ms. Allocated memory was 40.9 MB in the beginning and 41.9 MB in the end (delta: 1.0 MB). Free memory was 18.3 MB in the beginning and 20.7 MB in the end (delta: -2.3 MB). Peak memory consumption was 8.7 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 28.76 ms. Allocated memory is still 41.9 MB. Free memory was 20.7 MB in the beginning and 19.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 18.92 ms. Allocated memory is still 41.9 MB. Free memory was 19.2 MB in the beginning and 18.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 210.21 ms. Allocated memory was 41.9 MB in the beginning and 43.0 MB in the end (delta: 1.0 MB). Free memory was 18.0 MB in the beginning and 24.1 MB in the end (delta: -6.1 MB). Peak memory consumption was 7.9 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 607.23 ms. Allocated memory was 43.0 MB in the beginning and 43.5 MB in the end (delta: 524.3 kB). Free memory was 23.9 MB in the beginning and 18.9 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.6 MB. Max. memory is 14.3 GB. * Witness Printer took 42.11 ms. Allocated memory is still 43.5 MB. Free memory was 18.9 MB in the beginning and 16.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 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 0.4s. 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: 17]: 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@69814607=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4ba3e725=0, x=0, y=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 17]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L12] int x; [L13] int y; [L14] x = __VERIFIER_nondet_int() [L15] y = __VERIFIER_nondet_int() [L16] COND TRUE y >= 0 Loop: [L17] COND TRUE x >= 0 [L18] x = x - y End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...