./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/termination-crafted/Rotation180_false-termination_true-valid-memsafety.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 91b1670e Calling Ultimate with: 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 /storage/repos/svcomp/c/termination-crafted/Rotation180_false-termination_true-valid-memsafety.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 2c72d82c532a02e29872b33df90bf95e27cdfe45 .................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 23:13:20,621 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:13:20,623 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:13:20,635 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:13:20,636 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:13:20,637 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:13:20,638 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:13:20,641 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:13:20,642 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:13:20,643 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:13:20,644 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:13:20,644 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:13:20,645 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:13:20,646 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:13:20,648 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:13:20,649 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:13:20,650 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:13:20,652 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:13:20,654 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:13:20,656 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:13:20,657 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:13:20,658 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:13:20,661 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:13:20,662 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:13:20,662 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:13:20,663 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:13:20,665 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:13:20,666 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:13:20,667 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:13:20,669 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:13:20,669 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:13:20,669 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:13:20,670 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:13:20,670 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:13:20,671 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:13:20,673 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:13:20,673 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-28 23:13:20,690 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:13:20,690 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:13:20,692 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:13:20,692 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:13:20,692 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:13:20,693 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 23:13:20,693 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 23:13:20,693 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 23:13:20,694 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 23:13:20,694 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 23:13:20,694 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 23:13:20,694 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:13:20,694 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:13:20,694 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:13:20,695 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:13:20,695 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 23:13:20,695 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 23:13:20,695 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 23:13:20,695 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 23:13:20,695 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 23:13:20,697 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:13:20,697 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 23:13:20,698 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:13:20,698 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:13:20,698 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 23:13:20,698 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:13:20,698 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 23:13:20,698 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 23:13:20,700 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 23:13:20,701 INFO L133 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 -> 2c72d82c532a02e29872b33df90bf95e27cdfe45 [2018-11-28 23:13:20,737 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:13:20,750 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:13:20,754 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:13:20,756 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:13:20,757 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:13:20,758 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-crafted/Rotation180_false-termination_true-valid-memsafety.c [2018-11-28 23:13:20,822 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96b9527e1/f772aed4b35042ba83a6f5b6ee8292d4/FLAGb76a0fbfe [2018-11-28 23:13:21,279 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:13:21,280 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-crafted/Rotation180_false-termination_true-valid-memsafety.c [2018-11-28 23:13:21,288 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96b9527e1/f772aed4b35042ba83a6f5b6ee8292d4/FLAGb76a0fbfe [2018-11-28 23:13:21,659 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96b9527e1/f772aed4b35042ba83a6f5b6ee8292d4 [2018-11-28 23:13:21,663 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:13:21,665 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 23:13:21,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:13:21,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:13:21,672 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:13:21,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:13:21" (1/1) ... [2018-11-28 23:13:21,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a954af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:13:21, skipping insertion in model container [2018-11-28 23:13:21,677 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:13:21" (1/1) ... [2018-11-28 23:13:21,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:13:21,706 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:13:21,943 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:13:21,951 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:13:21,971 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:13:21,988 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:13:21,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:13:21 WrapperNode [2018-11-28 23:13:21,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:13:21,990 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 23:13:21,990 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 23:13:21,990 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 23:13:22,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:13:21" (1/1) ... [2018-11-28 23:13:22,006 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:13:21" (1/1) ... [2018-11-28 23:13:22,030 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 23:13:22,031 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:13:22,031 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:13:22,031 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:13:22,041 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:13:21" (1/1) ... [2018-11-28 23:13:22,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:13:21" (1/1) ... [2018-11-28 23:13:22,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:13:21" (1/1) ... [2018-11-28 23:13:22,042 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:13:21" (1/1) ... [2018-11-28 23:13:22,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:13:21" (1/1) ... [2018-11-28 23:13:22,048 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:13:21" (1/1) ... [2018-11-28 23:13:22,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:13:21" (1/1) ... [2018-11-28 23:13:22,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:13:22,050 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:13:22,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:13:22,051 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:13:22,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:13:21" (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 [2018-11-28 23:13:22,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:13:22,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:13:22,335 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:13:22,336 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-11-28 23:13:22,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:13:22 BoogieIcfgContainer [2018-11-28 23:13:22,337 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:13:22,337 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 23:13:22,337 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 23:13:22,341 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 23:13:22,342 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:13:22,342 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 11:13:21" (1/3) ... [2018-11-28 23:13:22,343 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@14d75355 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:13:22, skipping insertion in model container [2018-11-28 23:13:22,343 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:13:22,343 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:13:21" (2/3) ... [2018-11-28 23:13:22,344 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@14d75355 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:13:22, skipping insertion in model container [2018-11-28 23:13:22,344 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:13:22,345 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:13:22" (3/3) ... [2018-11-28 23:13:22,346 INFO L375 chiAutomizerObserver]: Analyzing ICFG Rotation180_false-termination_true-valid-memsafety.c [2018-11-28 23:13:22,417 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:13:22,418 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 23:13:22,418 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 23:13:22,419 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 23:13:22,419 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:13:22,419 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:13:22,419 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 23:13:22,419 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:13:22,419 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 23:13:22,456 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-11-28 23:13:22,515 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-28 23:13:22,520 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:13:22,520 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:13:22,530 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-28 23:13:22,530 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-28 23:13:22,531 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 23:13:22,531 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-11-28 23:13:22,535 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-28 23:13:22,535 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:13:22,535 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:13:22,536 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-28 23:13:22,536 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-28 23:13:22,553 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~oldx~0, main_~x~0, main_~y~0;havoc main_~oldx~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 3#L21true assume !!(main_~x~0 >= -2147483647); 6#L22true assume !!(main_~y~0 >= -2147483647); 4#L23-2true [2018-11-28 23:13:22,553 INFO L796 eck$LassoCheckResult]: Loop: 4#L23-2true assume !!(0 != ~unnamed0~0~true);main_~oldx~0 := main_~x~0;main_~x~0 := -main_~y~0;main_~y~0 := main_~oldx~0; 4#L23-2true [2018-11-28 23:13:22,560 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:13:22,560 INFO L82 PathProgramCache]: Analyzing trace with hash 30949, now seen corresponding path program 1 times [2018-11-28 23:13:22,563 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:13:22,564 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:13:22,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:13:22,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:13:22,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:13:22,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:13:22,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:13:22,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:13:22,679 INFO L82 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 1 times [2018-11-28 23:13:22,679 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:13:22,679 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:13:22,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:13:22,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:13:22,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:13:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:13:22,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:13:22,693 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:13:22,693 INFO L82 PathProgramCache]: Analyzing trace with hash 959439, now seen corresponding path program 1 times [2018-11-28 23:13:22,693 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:13:22,693 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:13:22,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:13:22,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:13:22,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:13:22,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:13:22,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:13:22,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 11:13:22 BoogieIcfgContainer [2018-11-28 23:13:22,906 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 23:13:22,906 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:13:22,907 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:13:22,907 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:13:22,908 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:13:22" (3/4) ... [2018-11-28 23:13:22,912 INFO L141 WitnessPrinter]: Generating witness for non-termination counterexample [2018-11-28 23:13:22,960 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 23:13:22,960 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:13:22,961 INFO L168 Benchmark]: Toolchain (without parser) took 1296.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -147.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:13:22,963 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:13:22,964 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.48 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:13:22,965 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.18 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:13:22,966 INFO L168 Benchmark]: Boogie Preprocessor took 18.90 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:13:22,966 INFO L168 Benchmark]: RCFGBuilder took 286.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -186.4 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. [2018-11-28 23:13:22,967 INFO L168 Benchmark]: BuchiAutomizer took 568.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 11.5 GB. [2018-11-28 23:13:22,969 INFO L168 Benchmark]: Witness Printer took 53.96 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:13:22,975 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 322.48 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.2 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 41.18 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.90 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 286.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -186.4 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 568.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 11.5 GB. * Witness Printer took 53.96 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.5s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: No data available LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 23]: 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 {oldx=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7fe95f25=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5dae2ab1=0, x=0, y=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 23]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L15] int oldx; [L16] int x; [L17] int y; [L18] x = __VERIFIER_nondet_int() [L19] y = __VERIFIER_nondet_int() [L21] COND FALSE !(!(x>=-2147483647)) [L22] COND FALSE !(!(y>=-2147483647)) Loop: [L23] COND TRUE \read(true) [L24] oldx = x [L25] x = -y [L26] y = oldx End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...