./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/NO_02.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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/NO_02.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 9c3e090d52ebca0d111383f72b5851cb29661ded ............................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:42:34,704 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:42:34,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:42:34,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:42:34,747 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:42:34,757 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:42:34,759 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:42:34,762 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:42:34,765 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:42:34,767 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:42:34,769 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:42:34,770 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:42:34,770 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:42:34,774 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:42:34,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:42:34,777 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:42:34,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:42:34,779 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:42:34,781 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:42:34,788 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:42:34,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:42:34,791 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:42:34,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:42:34,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:42:34,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:42:34,801 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:42:34,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:42:34,804 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:42:34,804 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:42:34,805 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:42:34,805 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:42:34,806 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:42:34,808 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:42:34,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:42:34,810 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:42:34,810 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:42:34,810 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:42:34,811 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:42:34,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:42:34,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:42:34,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:42:34,815 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-19 18:42:34,855 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:42:34,855 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:42:34,857 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:42:34,857 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:42:34,857 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:42:34,858 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-19 18:42:34,858 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-19 18:42:34,858 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-19 18:42:34,858 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-19 18:42:34,859 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-19 18:42:34,860 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-19 18:42:34,860 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:42:34,860 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:42:34,861 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:42:34,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:42:34,861 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-19 18:42:34,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-19 18:42:34,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-19 18:42:34,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 18:42:34,862 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-19 18:42:34,863 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:42:34,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-19 18:42:34,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:42:34,863 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:42:34,864 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-19 18:42:34,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:42:34,864 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:42:34,865 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:42:34,865 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-19 18:42:34,866 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-19 18:42:34,867 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 -> 9c3e090d52ebca0d111383f72b5851cb29661ded [2020-10-19 18:42:35,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:42:35,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:42:35,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:42:35,212 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:42:35,213 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:42:35,214 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/NO_02.c [2020-10-19 18:42:35,288 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a0a08252/11a8c229fc57405598c245572cc7fcc3/FLAGdaf82ec1e [2020-10-19 18:42:35,759 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:42:35,759 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/NO_02.c [2020-10-19 18:42:35,766 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a0a08252/11a8c229fc57405598c245572cc7fcc3/FLAGdaf82ec1e [2020-10-19 18:42:36,182 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a0a08252/11a8c229fc57405598c245572cc7fcc3 [2020-10-19 18:42:36,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:42:36,193 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 18:42:36,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:42:36,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:42:36,201 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:42:36,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:42:36" (1/1) ... [2020-10-19 18:42:36,206 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40ab4626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:42:36, skipping insertion in model container [2020-10-19 18:42:36,206 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:42:36" (1/1) ... [2020-10-19 18:42:36,215 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:42:36,234 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:42:36,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:42:36,392 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:42:36,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:42:36,423 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:42:36,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:42:36 WrapperNode [2020-10-19 18:42:36,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:42:36,424 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 18:42:36,424 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 18:42:36,425 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 18:42:36,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:42:36" (1/1) ... [2020-10-19 18:42:36,439 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:42:36" (1/1) ... [2020-10-19 18:42:36,458 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 18:42:36,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:42:36,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:42:36,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:42:36,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:42:36" (1/1) ... [2020-10-19 18:42:36,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:42:36" (1/1) ... [2020-10-19 18:42:36,525 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:42:36" (1/1) ... [2020-10-19 18:42:36,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:42:36" (1/1) ... [2020-10-19 18:42:36,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:42:36" (1/1) ... [2020-10-19 18:42:36,532 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:42:36" (1/1) ... [2020-10-19 18:42:36,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:42:36" (1/1) ... [2020-10-19 18:42:36,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:42:36,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:42:36,535 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:42:36,535 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:42:36,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:42:36" (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 [2020-10-19 18:42:36,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:42:36,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:42:36,737 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:42:36,738 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-19 18:42:36,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:42:36 BoogieIcfgContainer [2020-10-19 18:42:36,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:42:36,742 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-19 18:42:36,742 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-19 18:42:36,746 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-19 18:42:36,747 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:42:36,747 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.10 06:42:36" (1/3) ... [2020-10-19 18:42:36,748 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6ed3fb62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 06:42:36, skipping insertion in model container [2020-10-19 18:42:36,748 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:42:36,748 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:42:36" (2/3) ... [2020-10-19 18:42:36,749 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6ed3fb62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 06:42:36, skipping insertion in model container [2020-10-19 18:42:36,749 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:42:36,749 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:42:36" (3/3) ... [2020-10-19 18:42:36,751 INFO L373 chiAutomizerObserver]: Analyzing ICFG NO_02.c [2020-10-19 18:42:36,800 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-19 18:42:36,800 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-19 18:42:36,800 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-19 18:42:36,801 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:42:36,801 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:42:36,801 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-19 18:42:36,801 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:42:36,801 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-19 18:42:36,813 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-10-19 18:42:36,834 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-19 18:42:36,834 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:42:36,834 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:42:36,840 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-19 18:42:36,840 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 18:42:36,840 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-19 18:42:36,840 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-10-19 18:42:36,841 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-19 18:42:36,842 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:42:36,842 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:42:36,842 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-19 18:42:36,842 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 18:42:36,848 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_~i~0, main_~j~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 8#L10-2true [2020-10-19 18:42:36,849 INFO L796 eck$LassoCheckResult]: Loop: 8#L10-2true assume !!(main_~i~0 < 100);main_~j~0 := 0; 3#L12-2true assume !(main_~j~0 < 1); 10#L12-3true main_~i~0 := 1 + main_~i~0; 8#L10-2true [2020-10-19 18:42:36,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:36,854 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-10-19 18:42:36,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:42:36,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327278433] [2020-10-19 18:42:36,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:42:36,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:36,940 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:36,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:36,943 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:36,960 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:42:36,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:36,962 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2020-10-19 18:42:36,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:42:36,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804320710] [2020-10-19 18:42:36,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:42:36,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:42:37,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:42:37,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804320710] [2020-10-19 18:42:37,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:42:37,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 18:42:37,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434896027] [2020-10-19 18:42:37,038 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-19 18:42:37,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:42:37,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:42:37,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:42:37,059 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 3 states. [2020-10-19 18:42:37,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:42:37,101 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2020-10-19 18:42:37,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:42:37,104 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 7 transitions. [2020-10-19 18:42:37,105 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-19 18:42:37,109 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 3 states and 3 transitions. [2020-10-19 18:42:37,112 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-10-19 18:42:37,112 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2020-10-19 18:42:37,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 3 transitions. [2020-10-19 18:42:37,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:42:37,114 INFO L691 BuchiCegarLoop]: Abstraction has 3 states and 3 transitions. [2020-10-19 18:42:37,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3 states and 3 transitions. [2020-10-19 18:42:37,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3 to 3. [2020-10-19 18:42:37,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:42:37,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3 transitions. [2020-10-19 18:42:37,154 INFO L714 BuchiCegarLoop]: Abstraction has 3 states and 3 transitions. [2020-10-19 18:42:37,154 INFO L594 BuchiCegarLoop]: Abstraction has 3 states and 3 transitions. [2020-10-19 18:42:37,155 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-19 18:42:37,155 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states and 3 transitions. [2020-10-19 18:42:37,155 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-19 18:42:37,156 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:42:37,156 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:42:37,156 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-19 18:42:37,157 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-19 18:42:37,157 INFO L794 eck$LassoCheckResult]: Stem: 25#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 26#L10-2 assume !!(main_~i~0 < 100);main_~j~0 := 0; 24#L12-2 [2020-10-19 18:42:37,157 INFO L796 eck$LassoCheckResult]: Loop: 24#L12-2 assume !!(main_~j~0 < 1);main_~j~0 := main_~j~0; 24#L12-2 [2020-10-19 18:42:37,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:37,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-10-19 18:42:37,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:42:37,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137371538] [2020-10-19 18:42:37,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:42:37,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:37,164 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:37,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:37,167 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:37,169 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:42:37,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:37,169 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2020-10-19 18:42:37,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:42:37,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276378303] [2020-10-19 18:42:37,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:42:37,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:37,175 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:37,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:37,178 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:37,180 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:42:37,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:37,181 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2020-10-19 18:42:37,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:42:37,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253312853] [2020-10-19 18:42:37,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:42:37,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:37,190 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:37,195 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:37,197 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:42:37,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.10 06:42:37 BoogieIcfgContainer [2020-10-19 18:42:37,304 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-19 18:42:37,304 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:42:37,305 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:42:37,305 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:42:37,305 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:42:36" (3/4) ... [2020-10-19 18:42:37,308 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-10-19 18:42:37,351 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:42:37,351 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:42:37,354 INFO L168 Benchmark]: Toolchain (without parser) took 1165.71 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 71.3 MB). Free memory was 960.0 MB in the beginning and 1.0 GB in the end (delta: -57.6 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:42:37,355 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:42:37,355 INFO L168 Benchmark]: CACSL2BoogieTranslator took 226.49 ms. Allocated memory is still 1.0 GB. Free memory was 960.0 MB in the beginning and 949.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:42:37,356 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.11 ms. Allocated memory is still 1.0 GB. Free memory is still 949.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:42:37,357 INFO L168 Benchmark]: Boogie Preprocessor took 75.63 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 71.3 MB). Free memory was 949.2 MB in the beginning and 1.1 GB in the end (delta: -117.5 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2020-10-19 18:42:37,358 INFO L168 Benchmark]: RCFGBuilder took 207.00 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. [2020-10-19 18:42:37,359 INFO L168 Benchmark]: BuchiAutomizer took 562.09 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 29.6 MB). Peak memory consumption was 29.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:42:37,359 INFO L168 Benchmark]: Witness Printer took 46.90 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:42:37,363 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 226.49 ms. Allocated memory is still 1.0 GB. Free memory was 960.0 MB in the beginning and 949.2 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 34.11 ms. Allocated memory is still 1.0 GB. Free memory is still 949.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 75.63 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 71.3 MB). Free memory was 949.2 MB in the beginning and 1.1 GB in the end (delta: -117.5 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 207.00 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 562.09 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 29.6 MB). Peak memory consumption was 29.6 MB. Max. memory is 11.5 GB. * Witness Printer took 46.90 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 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 Your program was decomposed into 1 terminating modules (1 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.1 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.5s 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 3 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 6 SDtfs, 0 SDslu, 4 SDs, 0 SdLazy, 2 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s 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: 12]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {\result=0, i=0, j=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 12]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int j; [L8] i = 0 [L10] COND TRUE i < 100 [L11] j = 0 Loop: [L12] COND TRUE j < 1 [L13] j = j+0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...