./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/termination-restricted-15/TwoFloatInterv_false-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 2e94e6aa 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-restricted-15/TwoFloatInterv_false-termination_true-no-overflow.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 c81b642bdc34318660f50d5b284278ba8988a3d4 .................................................................................................................................................................................................................................................................................................................... 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 0.1.24-2e94e6a [2019-01-01 21:39:59,791 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-01 21:39:59,794 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-01 21:39:59,807 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-01 21:39:59,807 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-01 21:39:59,808 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-01 21:39:59,810 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-01 21:39:59,812 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-01 21:39:59,814 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-01 21:39:59,815 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-01 21:39:59,816 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-01 21:39:59,817 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-01 21:39:59,818 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-01 21:39:59,819 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-01 21:39:59,821 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-01 21:39:59,821 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-01 21:39:59,823 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-01 21:39:59,825 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-01 21:39:59,827 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-01 21:39:59,829 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-01 21:39:59,831 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-01 21:39:59,832 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-01 21:39:59,835 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-01 21:39:59,836 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-01 21:39:59,836 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-01 21:39:59,837 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-01 21:39:59,838 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-01 21:39:59,839 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-01 21:39:59,840 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-01 21:39:59,842 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-01 21:39:59,842 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-01 21:39:59,843 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-01 21:39:59,843 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-01 21:39:59,844 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-01 21:39:59,845 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-01 21:39:59,846 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-01 21:39:59,846 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-01-01 21:39:59,871 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-01 21:39:59,872 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-01 21:39:59,875 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-01 21:39:59,875 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-01 21:39:59,875 INFO L133 SettingsManager]: * Use SBE=true [2019-01-01 21:39:59,875 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-01-01 21:39:59,875 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-01-01 21:39:59,876 INFO L133 SettingsManager]: * Use old map elimination=false [2019-01-01 21:39:59,876 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2019-01-01 21:39:59,876 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2019-01-01 21:39:59,876 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-01-01 21:39:59,876 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-01 21:39:59,876 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-01 21:39:59,878 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-01 21:39:59,878 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-01 21:39:59,878 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-01-01 21:39:59,878 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-01-01 21:39:59,878 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-01-01 21:39:59,879 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-01 21:39:59,879 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-01-01 21:39:59,879 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-01 21:39:59,879 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-01-01 21:39:59,879 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-01 21:39:59,879 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-01 21:39:59,881 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-01-01 21:39:59,881 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-01 21:39:59,881 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-01 21:39:59,882 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-01-01 21:39:59,884 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-01-01 21:39:59,884 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 -> c81b642bdc34318660f50d5b284278ba8988a3d4 [2019-01-01 21:39:59,942 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-01 21:39:59,959 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-01 21:39:59,966 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-01 21:39:59,968 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-01 21:39:59,968 INFO L276 PluginConnector]: CDTParser initialized [2019-01-01 21:39:59,969 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-restricted-15/TwoFloatInterv_false-termination_true-no-overflow.c [2019-01-01 21:40:00,041 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac71dd344/eef42fb6999945b7a7f8b7feec7b3c80/FLAG9d542acac [2019-01-01 21:40:00,549 INFO L307 CDTParser]: Found 1 translation units. [2019-01-01 21:40:00,550 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-restricted-15/TwoFloatInterv_false-termination_true-no-overflow.c [2019-01-01 21:40:00,555 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac71dd344/eef42fb6999945b7a7f8b7feec7b3c80/FLAG9d542acac [2019-01-01 21:40:00,910 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac71dd344/eef42fb6999945b7a7f8b7feec7b3c80 [2019-01-01 21:40:00,914 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-01 21:40:00,915 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-01 21:40:00,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-01 21:40:00,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-01 21:40:00,921 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-01 21:40:00,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 09:40:00" (1/1) ... [2019-01-01 21:40:00,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b7244c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:40:00, skipping insertion in model container [2019-01-01 21:40:00,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 09:40:00" (1/1) ... [2019-01-01 21:40:00,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-01 21:40:00,952 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-01 21:40:01,169 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 21:40:01,174 INFO L191 MainTranslator]: Completed pre-run [2019-01-01 21:40:01,193 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 21:40:01,209 INFO L195 MainTranslator]: Completed translation [2019-01-01 21:40:01,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:40:01 WrapperNode [2019-01-01 21:40:01,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-01 21:40:01,211 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-01 21:40:01,211 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-01 21:40:01,212 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-01 21:40:01,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:40:01" (1/1) ... [2019-01-01 21:40:01,228 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:40:01" (1/1) ... [2019-01-01 21:40:01,250 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-01 21:40:01,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-01 21:40:01,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-01 21:40:01,251 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-01 21:40:01,263 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:40:01" (1/1) ... [2019-01-01 21:40:01,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:40:01" (1/1) ... [2019-01-01 21:40:01,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:40:01" (1/1) ... [2019-01-01 21:40:01,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:40:01" (1/1) ... [2019-01-01 21:40:01,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:40:01" (1/1) ... [2019-01-01 21:40:01,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:40:01" (1/1) ... [2019-01-01 21:40:01,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:40:01" (1/1) ... [2019-01-01 21:40:01,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-01 21:40:01,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-01 21:40:01,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-01 21:40:01,283 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-01 21:40:01,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:40:01" (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 [2019-01-01 21:40:01,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-01 21:40:01,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-01 21:40:01,663 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-01 21:40:01,664 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2019-01-01 21:40:01,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 09:40:01 BoogieIcfgContainer [2019-01-01 21:40:01,664 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-01 21:40:01,665 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-01-01 21:40:01,665 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-01-01 21:40:01,669 INFO L276 PluginConnector]: BuchiAutomizer initialized [2019-01-01 21:40:01,670 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-01 21:40:01,670 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.01 09:40:00" (1/3) ... [2019-01-01 21:40:01,671 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2f65f6ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.01 09:40:01, skipping insertion in model container [2019-01-01 21:40:01,671 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-01 21:40:01,671 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:40:01" (2/3) ... [2019-01-01 21:40:01,672 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2f65f6ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.01 09:40:01, skipping insertion in model container [2019-01-01 21:40:01,672 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-01 21:40:01,672 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 09:40:01" (3/3) ... [2019-01-01 21:40:01,674 INFO L375 chiAutomizerObserver]: Analyzing ICFG TwoFloatInterv_false-termination_true-no-overflow.c [2019-01-01 21:40:01,736 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-01 21:40:01,737 INFO L374 BuchiCegarLoop]: Interprodecural is true [2019-01-01 21:40:01,737 INFO L375 BuchiCegarLoop]: Hoare is false [2019-01-01 21:40:01,738 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-01-01 21:40:01,738 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-01 21:40:01,738 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-01 21:40:01,738 INFO L379 BuchiCegarLoop]: Difference is false [2019-01-01 21:40:01,738 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-01 21:40:01,738 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-01-01 21:40:01,755 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2019-01-01 21:40:01,780 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-01-01 21:40:01,780 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-01 21:40:01,780 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-01 21:40:01,788 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-01-01 21:40:01,788 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-01-01 21:40:01,788 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2019-01-01 21:40:01,788 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2019-01-01 21:40:01,790 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-01-01 21:40:01,790 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-01 21:40:01,790 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-01 21:40:01,790 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-01-01 21:40:01,790 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-01-01 21:40:01,798 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 3#L16-1true [2019-01-01 21:40:01,798 INFO L796 eck$LassoCheckResult]: Loop: 3#L16-1true assume !!(main_~i~0 > 0 && main_~i~0 < 50); 4#L10true assume main_~i~0 < 20;main_~i~0 := main_~i~0 - 1; 10#L10-2true assume main_~i~0 > 10;main_~i~0 := 1 + main_~i~0; 7#L13-1true assume 30 <= main_~i~0 && main_~i~0 <= 40;main_~i~0 := main_~i~0 - 1; 3#L16-1true [2019-01-01 21:40:01,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:40:01,805 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-01-01 21:40:01,808 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:40:01,808 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:40:01,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:40:01,865 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:40:01,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:40:01,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:40:01,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:40:01,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:40:01,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1234538, now seen corresponding path program 1 times [2019-01-01 21:40:01,911 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:40:01,912 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:40:01,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:40:01,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:40:01,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:40:01,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 21:40:02,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 21:40:02,027 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-01 21:40:02,027 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-01 21:40:02,032 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-01-01 21:40:02,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-01 21:40:02,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-01-01 21:40:02,050 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 4 states. [2019-01-01 21:40:02,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-01 21:40:02,298 INFO L93 Difference]: Finished difference Result 20 states and 25 transitions. [2019-01-01 21:40:02,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-01 21:40:02,301 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 25 transitions. [2019-01-01 21:40:02,303 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2019-01-01 21:40:02,308 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 12 states and 16 transitions. [2019-01-01 21:40:02,310 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2019-01-01 21:40:02,310 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-01-01 21:40:02,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 16 transitions. [2019-01-01 21:40:02,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-01-01 21:40:02,312 INFO L705 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2019-01-01 21:40:02,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 16 transitions. [2019-01-01 21:40:02,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 9. [2019-01-01 21:40:02,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-01-01 21:40:02,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 13 transitions. [2019-01-01 21:40:02,345 INFO L728 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2019-01-01 21:40:02,345 INFO L608 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2019-01-01 21:40:02,345 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2019-01-01 21:40:02,346 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 13 transitions. [2019-01-01 21:40:02,346 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-01-01 21:40:02,346 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-01 21:40:02,346 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-01 21:40:02,347 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-01-01 21:40:02,347 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-01-01 21:40:02,347 INFO L794 eck$LassoCheckResult]: Stem: 42#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 43#L16-1 [2019-01-01 21:40:02,347 INFO L796 eck$LassoCheckResult]: Loop: 43#L16-1 assume !!(main_~i~0 > 0 && main_~i~0 < 50); 45#L10 assume !(main_~i~0 < 20); 46#L10-2 assume main_~i~0 > 10;main_~i~0 := 1 + main_~i~0; 47#L13-1 assume 30 <= main_~i~0 && main_~i~0 <= 40;main_~i~0 := main_~i~0 - 1; 43#L16-1 [2019-01-01 21:40:02,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:40:02,348 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2019-01-01 21:40:02,348 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:40:02,348 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:40:02,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:40:02,350 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:40:02,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:40:02,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:40:02,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:40:02,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:40:02,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1236460, now seen corresponding path program 1 times [2019-01-01 21:40:02,354 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:40:02,354 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:40:02,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:40:02,356 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-01-01 21:40:02,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:40:02,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:40:02,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:40:02,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:40:02,367 INFO L82 PathProgramCache]: Analyzing trace with hash 29865611, now seen corresponding path program 1 times [2019-01-01 21:40:02,367 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:40:02,367 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:40:02,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:40:02,369 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:40:02,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:40:02,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:40:02,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:40:02,656 WARN L181 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 14 [2019-01-01 21:40:02,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.01 09:40:02 BoogieIcfgContainer [2019-01-01 21:40:02,722 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-01-01 21:40:02,722 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-01 21:40:02,722 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-01 21:40:02,724 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-01 21:40:02,724 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 09:40:01" (3/4) ... [2019-01-01 21:40:02,728 INFO L141 WitnessPrinter]: Generating witness for non-termination counterexample [2019-01-01 21:40:02,788 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-01 21:40:02,788 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-01 21:40:02,791 INFO L168 Benchmark]: Toolchain (without parser) took 1876.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -140.1 MB). Peak memory consumption was 7.2 MB. Max. memory is 11.5 GB. [2019-01-01 21:40:02,795 INFO L168 Benchmark]: CDTParser took 0.19 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. [2019-01-01 21:40:02,796 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.76 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 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. [2019-01-01 21:40:02,796 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.38 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. [2019-01-01 21:40:02,799 INFO L168 Benchmark]: Boogie Preprocessor took 31.56 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. [2019-01-01 21:40:02,799 INFO L168 Benchmark]: RCFGBuilder took 381.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -192.0 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2019-01-01 21:40:02,800 INFO L168 Benchmark]: BuchiAutomizer took 1056.89 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: 41.2 MB). Peak memory consumption was 41.2 MB. Max. memory is 11.5 GB. [2019-01-01 21:40:02,803 INFO L168 Benchmark]: Witness Printer took 65.99 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. [2019-01-01 21:40:02,811 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 293.76 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 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 39.38 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 31.56 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 381.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -192.0 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1056.89 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: 41.2 MB). Peak memory consumption was 41.2 MB. Max. memory is 11.5 GB. * Witness Printer took 65.99 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 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 4 locations. The remainder module has 9 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.9s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.5s. Construction of modules took 0.2s. 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, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 9 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 12 SDtfs, 8 SDslu, 6 SDs, 0 SdLazy, 25 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s 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: 9]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6c57fd47=0, \result=0, i=29} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 9]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() Loop: [L9] COND TRUE i > 0 && i < 50 [L10] COND FALSE !(i < 20) [L13] COND TRUE i > 10 [L14] i = i+1 [L16] COND TRUE 30 <= i && i <= 40 [L17] i = i-1 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...