./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/loops/while_infinite_loop_3_true-unreach-call_false-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- 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/loops/while_infinite_loop_3_true-unreach-call_false-termination.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-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 32bit --witnessprinter.graph.data.programhash bf39cb82696559ce2a61c1f997102826529c1f07 .................................................................................................................................................................................................................................................................................................................... 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 23:40:56,846 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:40:56,849 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:40:56,868 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:40:56,869 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:40:56,870 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:40:56,871 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:40:56,882 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:40:56,884 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:40:56,885 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:40:56,886 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:40:56,886 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:40:56,888 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:40:56,889 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:40:56,890 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:40:56,891 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:40:56,892 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:40:56,894 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:40:56,897 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:40:56,899 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:40:56,900 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:40:56,901 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:40:56,904 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:40:56,905 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:40:56,905 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:40:56,906 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:40:56,907 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:40:56,908 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:40:56,910 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:40:56,911 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:40:56,911 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:40:56,913 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:40:56,913 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:40:56,913 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:40:56,914 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:40:56,915 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:40:56,916 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-11-28 23:40:56,934 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:40:56,935 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:40:56,936 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:40:56,936 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:40:56,936 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:40:56,937 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 23:40:56,937 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 23:40:56,938 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 23:40:56,938 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 23:40:56,938 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 23:40:56,938 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 23:40:56,938 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:40:56,938 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 23:40:56,939 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:40:56,939 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:40:56,939 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 23:40:56,939 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:40:56,939 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 23:40:56,939 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 23:40:56,941 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 23:40:56,941 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 23:40:56,941 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 23:40:56,942 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 23:40:56,942 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:40:56,942 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 23:40:56,942 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:40:56,942 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:40:56,942 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 23:40:56,944 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:40:56,944 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 23:40:56,944 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 23:40:56,946 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 23:40:56,946 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf39cb82696559ce2a61c1f997102826529c1f07 [2018-11-28 23:40:56,982 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:40:56,995 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:40:56,999 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:40:57,000 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:40:57,001 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:40:57,002 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loops/while_infinite_loop_3_true-unreach-call_false-termination.i [2018-11-28 23:40:57,066 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/043426b94/b62cd338b7264c4cb8b9e363ed7ab19a/FLAG78956c03a [2018-11-28 23:40:57,520 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:40:57,521 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loops/while_infinite_loop_3_true-unreach-call_false-termination.i [2018-11-28 23:40:57,527 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/043426b94/b62cd338b7264c4cb8b9e363ed7ab19a/FLAG78956c03a [2018-11-28 23:40:57,898 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/043426b94/b62cd338b7264c4cb8b9e363ed7ab19a [2018-11-28 23:40:57,902 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:40:57,903 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 23:40:57,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:40:57,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:40:57,911 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:40:57,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:40:57" (1/1) ... [2018-11-28 23:40:57,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45ab5742 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:40:57, skipping insertion in model container [2018-11-28 23:40:57,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:40:57" (1/1) ... [2018-11-28 23:40:57,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:40:57,949 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:40:58,132 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:40:58,139 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:40:58,156 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:40:58,175 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:40:58,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:40:58 WrapperNode [2018-11-28 23:40:58,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:40:58,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 23:40:58,177 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 23:40:58,177 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 23:40:58,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:40:58" (1/1) ... [2018-11-28 23:40:58,198 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:40:58" (1/1) ... [2018-11-28 23:40:58,224 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 23:40:58,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:40:58,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:40:58,226 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:40:58,238 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:40:58" (1/1) ... [2018-11-28 23:40:58,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:40:58" (1/1) ... [2018-11-28 23:40:58,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:40:58" (1/1) ... [2018-11-28 23:40:58,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:40:58" (1/1) ... [2018-11-28 23:40:58,246 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:40:58" (1/1) ... [2018-11-28 23:40:58,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:40:58" (1/1) ... [2018-11-28 23:40:58,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:40:58" (1/1) ... [2018-11-28 23:40:58,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:40:58,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:40:58,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:40:58,264 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:40:58,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:40:58" (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 23:40:58,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:40:58,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:40:58,700 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:40:58,700 INFO L280 CfgBuilder]: Removed 12 assue(true) statements. [2018-11-28 23:40:58,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:40:58 BoogieIcfgContainer [2018-11-28 23:40:58,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:40:58,702 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 23:40:58,702 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 23:40:58,706 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 23:40:58,707 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:40:58,707 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 11:40:57" (1/3) ... [2018-11-28 23:40:58,708 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@413d0828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:40:58, skipping insertion in model container [2018-11-28 23:40:58,708 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:40:58,708 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:40:58" (2/3) ... [2018-11-28 23:40:58,709 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@413d0828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:40:58, skipping insertion in model container [2018-11-28 23:40:58,709 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:40:58,709 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:40:58" (3/3) ... [2018-11-28 23:40:58,711 INFO L375 chiAutomizerObserver]: Analyzing ICFG while_infinite_loop_3_true-unreach-call_false-termination.i [2018-11-28 23:40:58,776 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:40:58,778 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 23:40:58,779 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 23:40:58,779 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 23:40:58,779 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:40:58,779 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:40:58,779 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 23:40:58,779 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:40:58,780 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 23:40:58,799 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2018-11-28 23:40:58,825 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-28 23:40:58,826 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:40:58,826 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:40:58,835 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 23:40:58,835 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-28 23:40:58,835 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 23:40:58,836 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2018-11-28 23:40:58,837 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-28 23:40:58,838 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:40:58,838 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:40:58,839 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 23:40:58,840 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-28 23:40:58,850 INFO L794 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue ~x~0 := 0; 4#L-1true havoc main_#res; 12#L4-2true [2018-11-28 23:40:58,851 INFO L796 eck$LassoCheckResult]: Loop: 12#L4-2true assume !false; 14#L14loopEntrytrue assume false; 10#L14-2true __VERIFIER_assert_#in~cond := (if 0 == ~x~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 16#L4true assume !(0 == __VERIFIER_assert_~cond); 12#L4-2true [2018-11-28 23:40:58,859 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:40:58,859 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-11-28 23:40:58,862 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:40:58,863 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:40:58,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:40:58,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:40:58,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:40:58,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:40:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:40:58,967 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:40:58,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1269327, now seen corresponding path program 1 times [2018-11-28 23:40:58,967 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:40:58,967 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:40:58,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:40:58,969 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:40:58,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:40:58,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:40:58,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:40:59,001 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:40:59,001 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 23:40:59,006 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-28 23:40:59,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 23:40:59,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 23:40:59,026 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2018-11-28 23:40:59,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:40:59,032 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2018-11-28 23:40:59,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 23:40:59,035 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 7 transitions. [2018-11-28 23:40:59,036 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-28 23:40:59,040 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 6 states and 6 transitions. [2018-11-28 23:40:59,042 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2018-11-28 23:40:59,042 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2018-11-28 23:40:59,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 6 transitions. [2018-11-28 23:40:59,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 23:40:59,044 INFO L705 BuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-11-28 23:40:59,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 6 transitions. [2018-11-28 23:40:59,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-11-28 23:40:59,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-11-28 23:40:59,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-11-28 23:40:59,077 INFO L728 BuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-11-28 23:40:59,078 INFO L608 BuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-11-28 23:40:59,078 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 23:40:59,078 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 6 transitions. [2018-11-28 23:40:59,078 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-28 23:40:59,079 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:40:59,079 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:40:59,079 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 23:40:59,079 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-28 23:40:59,080 INFO L794 eck$LassoCheckResult]: Stem: 31#ULTIMATE.startENTRY ~x~0 := 0; 29#L-1 havoc main_#res; 30#L4-2 [2018-11-28 23:40:59,080 INFO L796 eck$LassoCheckResult]: Loop: 30#L4-2 assume !false; 34#L14loopEntry assume !false;~x~0 := 0; 32#L14-2 __VERIFIER_assert_#in~cond := (if 0 == ~x~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 33#L4 assume !(0 == __VERIFIER_assert_~cond); 30#L4-2 [2018-11-28 23:40:59,080 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:40:59,080 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2018-11-28 23:40:59,080 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:40:59,081 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:40:59,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:40:59,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:40:59,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:40:59,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:40:59,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:40:59,087 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:40:59,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1271249, now seen corresponding path program 1 times [2018-11-28 23:40:59,087 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:40:59,087 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:40:59,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:40:59,089 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:40:59,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:40:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:40:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:40:59,105 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:40:59,105 INFO L82 PathProgramCache]: Analyzing trace with hash 889698451, now seen corresponding path program 1 times [2018-11-28 23:40:59,105 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:40:59,105 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:40:59,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:40:59,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:40:59,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:40:59,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:40:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:40:59,262 WARN L180 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 12 [2018-11-28 23:40:59,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 11:40:59 BoogieIcfgContainer [2018-11-28 23:40:59,379 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 23:40:59,380 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:40:59,380 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:40:59,380 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:40:59,381 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:40:58" (3/4) ... [2018-11-28 23:40:59,384 INFO L141 WitnessPrinter]: Generating witness for non-termination counterexample [2018-11-28 23:40:59,427 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 23:40:59,427 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:40:59,428 INFO L168 Benchmark]: Toolchain (without parser) took 1526.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 951.3 MB in the beginning and 1.1 GB in the end (delta: -127.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 11.5 GB. [2018-11-28 23:40:59,430 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:40:59,430 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.78 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:40:59,431 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.32 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:40:59,432 INFO L168 Benchmark]: Boogie Preprocessor took 38.07 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:40:59,432 INFO L168 Benchmark]: RCFGBuilder took 437.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -165.7 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2018-11-28 23:40:59,433 INFO L168 Benchmark]: BuchiAutomizer took 677.24 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: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2018-11-28 23:40:59,434 INFO L168 Benchmark]: Witness Printer took 47.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-11-28 23:40:59,439 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 271.78 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 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 48.32 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 38.07 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 437.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -165.7 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 677.24 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: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Witness Printer took 47.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. 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 2 locations. The remainder module has 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.6s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 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 6 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 7 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 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: 24]: 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 {cond=1, \result=0, \old(cond)=1, x=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 3]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L10] int x=0; Loop: [L24] COND TRUE 1 [L14] COND TRUE 1 [L15] x=0 [L4] COND FALSE !(!(cond)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...