./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/GCD2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 54858612 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_1.5.800.v20200727-1323.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 0.2.0-5485861 [2020-10-26 04:16:26,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 04:16:26,619 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 04:16:26,654 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 04:16:26,655 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 04:16:26,656 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 04:16:26,658 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 04:16:26,661 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 04:16:26,663 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 04:16:26,664 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 04:16:26,666 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 04:16:26,667 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 04:16:26,668 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 04:16:26,669 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 04:16:26,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 04:16:26,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 04:16:26,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 04:16:26,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 04:16:26,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 04:16:26,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 04:16:26,682 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 04:16:26,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 04:16:26,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 04:16:26,687 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 04:16:26,690 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 04:16:26,691 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 04:16:26,691 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 04:16:26,692 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 04:16:26,693 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 04:16:26,694 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 04:16:26,695 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 04:16:26,696 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 04:16:26,697 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 04:16:26,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 04:16:26,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 04:16:26,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 04:16:26,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 04:16:26,702 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 04:16:26,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 04:16:26,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 04:16:26,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 04:16:26,705 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-26 04:16:26,736 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 04:16:26,737 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 04:16:26,738 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 04:16:26,738 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 04:16:26,739 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 04:16:26,739 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-26 04:16:26,739 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-26 04:16:26,739 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-26 04:16:26,740 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-26 04:16:26,740 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-26 04:16:26,740 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-26 04:16:26,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 04:16:26,740 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 04:16:26,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 04:16:26,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 04:16:26,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-26 04:16:26,741 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-26 04:16:26,741 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-26 04:16:26,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 04:16:26,742 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-26 04:16:26,742 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 04:16:26,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-26 04:16:26,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 04:16:26,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 04:16:26,743 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-26 04:16:26,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 04:16:26,743 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 04:16:26,744 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 04:16:26,744 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-26 04:16:26,745 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-26 04:16:26,746 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f19bc75dcbe901d738916f7ca817c5a4f2f97f97 [2020-10-26 04:16:27,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 04:16:27,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 04:16:27,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 04:16:27,237 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 04:16:27,238 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 04:16:27,239 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/GCD2.c [2020-10-26 04:16:27,318 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c14b5408a/c626558b76dc4f71b2e139802fe8f37f/FLAG79fc80cde [2020-10-26 04:16:27,917 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 04:16:27,918 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/GCD2.c [2020-10-26 04:16:27,927 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c14b5408a/c626558b76dc4f71b2e139802fe8f37f/FLAG79fc80cde [2020-10-26 04:16:28,299 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c14b5408a/c626558b76dc4f71b2e139802fe8f37f [2020-10-26 04:16:28,302 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 04:16:28,309 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 04:16:28,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 04:16:28,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 04:16:28,316 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 04:16:28,317 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:16:28" (1/1) ... [2020-10-26 04:16:28,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2052f5cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:28, skipping insertion in model container [2020-10-26 04:16:28,336 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:16:28" (1/1) ... [2020-10-26 04:16:28,351 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 04:16:28,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 04:16:28,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:16:28,538 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 04:16:28,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:16:28,579 INFO L208 MainTranslator]: Completed translation [2020-10-26 04:16:28,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:28 WrapperNode [2020-10-26 04:16:28,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 04:16:28,581 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 04:16:28,581 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 04:16:28,582 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 04:16:28,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:28" (1/1) ... [2020-10-26 04:16:28,598 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:28" (1/1) ... [2020-10-26 04:16:28,618 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 04:16:28,619 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 04:16:28,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 04:16:28,620 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 04:16:28,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:28" (1/1) ... [2020-10-26 04:16:28,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:28" (1/1) ... [2020-10-26 04:16:28,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:28" (1/1) ... [2020-10-26 04:16:28,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:28" (1/1) ... [2020-10-26 04:16:28,633 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:28" (1/1) ... [2020-10-26 04:16:28,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:28" (1/1) ... [2020-10-26 04:16:28,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:28" (1/1) ... [2020-10-26 04:16:28,640 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 04:16:28,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 04:16:28,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 04:16:28,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 04:16:28,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:28" (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 [2020-10-26 04:16:28,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 04:16:28,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 04:16:28,968 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 04:16:28,969 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-26 04:16:28,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:16:28 BoogieIcfgContainer [2020-10-26 04:16:28,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 04:16:28,973 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-26 04:16:28,974 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-26 04:16:28,979 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-26 04:16:28,980 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:16:28,980 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.10 04:16:28" (1/3) ... [2020-10-26 04:16:28,982 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1d349a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 04:16:28, skipping insertion in model container [2020-10-26 04:16:28,982 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:16:28,982 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:28" (2/3) ... [2020-10-26 04:16:28,984 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1d349a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 04:16:28, skipping insertion in model container [2020-10-26 04:16:28,984 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:16:28,984 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:16:28" (3/3) ... [2020-10-26 04:16:28,987 INFO L373 chiAutomizerObserver]: Analyzing ICFG GCD2.c [2020-10-26 04:16:29,098 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-26 04:16:29,098 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-26 04:16:29,098 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-26 04:16:29,098 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 04:16:29,099 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 04:16:29,099 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-26 04:16:29,099 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 04:16:29,099 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-26 04:16:29,119 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2020-10-26 04:16:29,141 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 04:16:29,141 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:16:29,141 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:16:29,149 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-26 04:16:29,149 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:16:29,149 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-26 04:16:29,150 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2020-10-26 04:16:29,152 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 04:16:29,152 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:16:29,153 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:16:29,153 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-26 04:16:29,153 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:16:29,162 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 [2020-10-26 04:16:29,163 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 [2020-10-26 04:16:29,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:29,173 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-10-26 04:16:29,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:16:29,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294477525] [2020-10-26 04:16:29,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:16:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:29,304 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:29,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:29,318 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:29,338 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:16:29,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:29,344 INFO L82 PathProgramCache]: Analyzing trace with hash 39832, now seen corresponding path program 1 times [2020-10-26 04:16:29,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:16:29,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919316705] [2020-10-26 04:16:29,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:16:29,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:29,383 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:29,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:29,397 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:29,400 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:16:29,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:29,404 INFO L82 PathProgramCache]: Analyzing trace with hash 963353, now seen corresponding path program 1 times [2020-10-26 04:16:29,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:16:29,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564248232] [2020-10-26 04:16:29,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:16:29,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:29,432 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:29,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:29,450 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:29,455 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:16:29,714 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-10-26 04:16:29,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.10 04:16:29 BoogieIcfgContainer [2020-10-26 04:16:29,754 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-26 04:16:29,755 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 04:16:29,755 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 04:16:29,755 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 04:16:29,756 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:16:28" (3/4) ... [2020-10-26 04:16:29,759 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-10-26 04:16:29,802 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 04:16:29,803 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 04:16:29,805 INFO L168 Benchmark]: Toolchain (without parser) took 1500.06 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 21.2 MB in the beginning and 27.1 MB in the end (delta: -5.9 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. [2020-10-26 04:16:29,806 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 44.0 MB. Free memory was 23.8 MB in the beginning and 23.8 MB in the end (delta: 33.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:16:29,807 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.56 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 20.6 MB in the beginning and 31.8 MB in the end (delta: -11.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-10-26 04:16:29,808 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.59 ms. Allocated memory is still 54.5 MB. Free memory was 31.8 MB in the beginning and 30.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 04:16:29,809 INFO L168 Benchmark]: Boogie Preprocessor took 21.35 ms. Allocated memory is still 54.5 MB. Free memory was 30.6 MB in the beginning and 29.7 MB in the end (delta: 945.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:16:29,810 INFO L168 Benchmark]: RCFGBuilder took 330.42 ms. Allocated memory is still 54.5 MB. Free memory was 29.5 MB in the beginning and 34.4 MB in the end (delta: -4.9 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2020-10-26 04:16:29,810 INFO L168 Benchmark]: BuchiAutomizer took 780.72 ms. Allocated memory is still 54.5 MB. Free memory was 34.4 MB in the beginning and 28.9 MB in the end (delta: 5.5 MB). Peak memory consumption was 15.4 MB. Max. memory is 16.1 GB. [2020-10-26 04:16:29,811 INFO L168 Benchmark]: Witness Printer took 48.34 ms. Allocated memory is still 54.5 MB. Free memory was 28.6 MB in the beginning and 27.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 04:16:29,816 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 44.0 MB. Free memory was 23.8 MB in the beginning and 23.8 MB in the end (delta: 33.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 268.56 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 20.6 MB in the beginning and 31.8 MB in the end (delta: -11.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.59 ms. Allocated memory is still 54.5 MB. Free memory was 31.8 MB in the beginning and 30.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.35 ms. Allocated memory is still 54.5 MB. Free memory was 30.6 MB in the beginning and 29.7 MB in the end (delta: 945.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 330.42 ms. Allocated memory is still 54.5 MB. Free memory was 29.5 MB in the beginning and 34.4 MB in the end (delta: -4.9 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 780.72 ms. Allocated memory is still 54.5 MB. Free memory was 34.4 MB in the beginning and 28.9 MB in the end (delta: 5.5 MB). Peak memory consumption was 15.4 MB. Max. memory is 16.1 GB. * Witness Printer took 48.34 ms. Allocated memory is still 54.5 MB. Free memory was 28.6 MB in the beginning and 27.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.6s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.5s. 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@757d72d4=0, tmp=1, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@55210093=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...