./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/termination-restricted-15/Ex06_false-termination_true-no-overflow.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-restricted-15/Ex06_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 3ac2445d235ff9d71a6974ac9afce215f9983492 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 23:17:09,791 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:17:09,792 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:17:09,805 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:17:09,805 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:17:09,806 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:17:09,808 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:17:09,810 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:17:09,812 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:17:09,812 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:17:09,813 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:17:09,814 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:17:09,815 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:17:09,816 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:17:09,817 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:17:09,817 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:17:09,818 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:17:09,820 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:17:09,823 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:17:09,825 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:17:09,826 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:17:09,827 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:17:09,830 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:17:09,830 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:17:09,831 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:17:09,832 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:17:09,833 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:17:09,834 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:17:09,835 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:17:09,836 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:17:09,836 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:17:09,837 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:17:09,838 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:17:09,838 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:17:09,839 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:17:09,840 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:17:09,840 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-28 23:17:09,860 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:17:09,860 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:17:09,862 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:17:09,862 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:17:09,866 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:17:09,866 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 23:17:09,866 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 23:17:09,867 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 23:17:09,867 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 23:17:09,867 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 23:17:09,867 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 23:17:09,868 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:17:09,868 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:17:09,868 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:17:09,868 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:17:09,869 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 23:17:09,870 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 23:17:09,870 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 23:17:09,871 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 23:17:09,871 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 23:17:09,871 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:17:09,871 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 23:17:09,872 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:17:09,873 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:17:09,873 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 23:17:09,873 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:17:09,873 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 23:17:09,873 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 23:17:09,875 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 23:17:09,876 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 -> 3ac2445d235ff9d71a6974ac9afce215f9983492 [2018-11-28 23:17:09,912 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:17:09,925 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:17:09,930 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:17:09,933 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:17:09,934 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:17:09,935 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-restricted-15/Ex06_false-termination_true-no-overflow.c [2018-11-28 23:17:10,016 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcadf1913/51db956e47bb438d8d95054338cab5fa/FLAG108f7d5b7 [2018-11-28 23:17:10,444 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:17:10,444 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-restricted-15/Ex06_false-termination_true-no-overflow.c [2018-11-28 23:17:10,462 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcadf1913/51db956e47bb438d8d95054338cab5fa/FLAG108f7d5b7 [2018-11-28 23:17:10,819 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcadf1913/51db956e47bb438d8d95054338cab5fa [2018-11-28 23:17:10,823 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:17:10,824 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 23:17:10,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:17:10,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:17:10,829 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:17:10,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:17:10" (1/1) ... [2018-11-28 23:17:10,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a57947c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:10, skipping insertion in model container [2018-11-28 23:17:10,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:17:10" (1/1) ... [2018-11-28 23:17:10,843 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:17:10,860 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:17:11,088 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:17:11,094 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:17:11,115 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:17:11,131 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:17:11,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:11 WrapperNode [2018-11-28 23:17:11,132 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:17:11,133 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 23:17:11,133 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 23:17:11,133 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 23:17:11,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:11" (1/1) ... [2018-11-28 23:17:11,149 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:11" (1/1) ... [2018-11-28 23:17:11,174 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 23:17:11,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:17:11,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:17:11,174 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:17:11,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:11" (1/1) ... [2018-11-28 23:17:11,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:11" (1/1) ... [2018-11-28 23:17:11,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:11" (1/1) ... [2018-11-28 23:17:11,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:11" (1/1) ... [2018-11-28 23:17:11,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:11" (1/1) ... [2018-11-28 23:17:11,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:11" (1/1) ... [2018-11-28 23:17:11,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:11" (1/1) ... [2018-11-28 23:17:11,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:17:11,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:17:11,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:17:11,200 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:17:11,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:11" (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 23:17:11,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:17:11,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:17:11,644 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:17:11,644 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-11-28 23:17:11,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:17:11 BoogieIcfgContainer [2018-11-28 23:17:11,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:17:11,647 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 23:17:11,647 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 23:17:11,652 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 23:17:11,653 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:17:11,653 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 11:17:10" (1/3) ... [2018-11-28 23:17:11,655 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@585fff78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:17:11, skipping insertion in model container [2018-11-28 23:17:11,655 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:17:11,656 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:11" (2/3) ... [2018-11-28 23:17:11,656 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@585fff78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:17:11, skipping insertion in model container [2018-11-28 23:17:11,657 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:17:11,657 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:17:11" (3/3) ... [2018-11-28 23:17:11,660 INFO L375 chiAutomizerObserver]: Analyzing ICFG Ex06_false-termination_true-no-overflow.c [2018-11-28 23:17:11,730 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:17:11,731 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 23:17:11,731 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 23:17:11,731 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 23:17:11,731 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:17:11,731 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:17:11,732 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 23:17:11,732 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:17:11,732 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 23:17:11,749 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-11-28 23:17:11,776 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 23:17:11,777 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:17:11,777 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:17:11,792 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 23:17:11,792 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:17:11,792 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 23:17:11,792 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-11-28 23:17:11,794 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 23:17:11,795 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:17:11,795 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:17:11,795 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 23:17:11,795 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:17:11,805 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 5#L13-1true [2018-11-28 23:17:11,806 INFO L796 eck$LassoCheckResult]: Loop: 5#L13-1true assume !!(main_~i~0 >= -5 && main_~i~0 <= 5); 3#L10true assume main_~i~0 > 0;main_~i~0 := main_~i~0 - 1; 9#L10-2true assume main_~i~0 < 0;main_~i~0 := 1 + main_~i~0; 5#L13-1true [2018-11-28 23:17:11,815 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:11,815 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-11-28 23:17:11,818 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:11,818 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:11,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:11,875 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:17:11,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:11,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:11,915 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:11,916 INFO L82 PathProgramCache]: Analyzing trace with hash 39823, now seen corresponding path program 1 times [2018-11-28 23:17:11,916 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:11,916 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:11,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:11,918 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:17:11,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:17:12,028 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 23:17:12,032 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:17:12,032 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 23:17:12,052 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-28 23:17:12,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 23:17:12,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 23:17:12,101 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 3 states. [2018-11-28 23:17:12,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:17:12,271 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2018-11-28 23:17:12,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 23:17:12,274 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 18 transitions. [2018-11-28 23:17:12,275 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-11-28 23:17:12,281 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 7 states and 10 transitions. [2018-11-28 23:17:12,282 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-28 23:17:12,282 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-28 23:17:12,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2018-11-28 23:17:12,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 23:17:12,284 INFO L705 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-11-28 23:17:12,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2018-11-28 23:17:12,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-11-28 23:17:12,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-28 23:17:12,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2018-11-28 23:17:12,316 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-11-28 23:17:12,316 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-11-28 23:17:12,317 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 23:17:12,317 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2018-11-28 23:17:12,317 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-11-28 23:17:12,318 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:17:12,318 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:17:12,318 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 23:17:12,318 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:17:12,319 INFO L794 eck$LassoCheckResult]: Stem: 35#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; 36#L13-1 [2018-11-28 23:17:12,319 INFO L796 eck$LassoCheckResult]: Loop: 36#L13-1 assume !!(main_~i~0 >= -5 && main_~i~0 <= 5); 32#L10 assume !(main_~i~0 > 0); 34#L10-2 assume main_~i~0 < 0;main_~i~0 := 1 + main_~i~0; 36#L13-1 [2018-11-28 23:17:12,319 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:12,319 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2018-11-28 23:17:12,320 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:12,320 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:12,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:12,322 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:17:12,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:12,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:12,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:12,326 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:12,326 INFO L82 PathProgramCache]: Analyzing trace with hash 39885, now seen corresponding path program 1 times [2018-11-28 23:17:12,326 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:12,326 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:12,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:12,328 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:17:12,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:12,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:12,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:12,336 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:12,336 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 1 times [2018-11-28 23:17:12,336 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:12,336 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:12,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:12,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:17:12,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:12,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:12,453 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:17:12,455 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:17:12,455 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:17:12,455 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:17:12,455 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:17:12,455 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:17:12,455 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:17:12,456 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:17:12,456 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ex06_false-termination_true-no-overflow.c_Iteration2_Loop [2018-11-28 23:17:12,456 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:17:12,456 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:17:12,481 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:17:12,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:17:12,536 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:17:12,645 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:17:12,646 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 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 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:17:12,661 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:17:12,661 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 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 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:17:12,688 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:17:12,688 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:17:12,699 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:17:12,717 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:17:12,717 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:17:12,717 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:17:12,717 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:17:12,717 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:17:12,718 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:17:12,718 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:17:12,718 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:17:12,718 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ex06_false-termination_true-no-overflow.c_Iteration2_Loop [2018-11-28 23:17:12,718 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:17:12,718 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:17:12,723 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:17:12,838 WARN L180 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-11-28 23:17:12,838 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:17:12,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:17:13,134 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:17:13,140 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:17:13,143 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:17:13,144 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:17:13,144 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:17:13,148 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:17:13,148 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:17:13,148 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:17:13,151 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:17:13,152 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:17:13,167 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:17:13,173 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:17:13,174 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:17:13,176 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:17:13,176 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:17:13,177 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:17:13,177 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2018-11-28 23:17:13,179 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:17:13,250 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:13,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:17:13,260 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:17:13,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:17:13,281 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:17:13,319 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 23:17:13,322 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-28 23:17:13,323 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 4 states. [2018-11-28 23:17:13,407 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 19 states and 26 transitions. Complement of second has 8 states. [2018-11-28 23:17:13,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 23:17:13,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:17:13,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2018-11-28 23:17:13,411 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 1 letters. Loop has 3 letters. [2018-11-28 23:17:13,413 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:17:13,413 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 3 letters. [2018-11-28 23:17:13,413 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:17:13,414 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 1 letters. Loop has 6 letters. [2018-11-28 23:17:13,414 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:17:13,414 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 26 transitions. [2018-11-28 23:17:13,416 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-11-28 23:17:13,416 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 13 states and 17 transitions. [2018-11-28 23:17:13,417 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2018-11-28 23:17:13,417 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2018-11-28 23:17:13,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 17 transitions. [2018-11-28 23:17:13,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:17:13,417 INFO L705 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2018-11-28 23:17:13,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 17 transitions. [2018-11-28 23:17:13,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2018-11-28 23:17:13,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-28 23:17:13,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2018-11-28 23:17:13,420 INFO L728 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2018-11-28 23:17:13,420 INFO L608 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2018-11-28 23:17:13,420 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-28 23:17:13,421 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2018-11-28 23:17:13,421 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-11-28 23:17:13,421 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:17:13,422 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:17:13,422 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-28 23:17:13,422 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:17:13,422 INFO L794 eck$LassoCheckResult]: Stem: 99#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; 100#L13-1 assume !!(main_~i~0 >= -5 && main_~i~0 <= 5); 104#L10 assume main_~i~0 > 0;main_~i~0 := main_~i~0 - 1; 106#L10-2 [2018-11-28 23:17:13,423 INFO L796 eck$LassoCheckResult]: Loop: 106#L10-2 assume !(main_~i~0 < 0); 101#L13-1 assume !!(main_~i~0 >= -5 && main_~i~0 <= 5); 102#L10 assume main_~i~0 > 0;main_~i~0 := main_~i~0 - 1; 106#L10-2 [2018-11-28 23:17:13,423 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:13,423 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2018-11-28 23:17:13,423 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:13,423 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:13,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:13,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:17:13,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:13,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:13,432 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:13,433 INFO L82 PathProgramCache]: Analyzing trace with hash 50295, now seen corresponding path program 1 times [2018-11-28 23:17:13,433 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:13,433 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:13,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:13,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:17:13,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:13,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:13,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:13,441 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:13,442 INFO L82 PathProgramCache]: Analyzing trace with hash 925775829, now seen corresponding path program 1 times [2018-11-28 23:17:13,442 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:13,442 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:13,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:13,444 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:17:13,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:13,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:13,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:13,560 WARN L180 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 10 [2018-11-28 23:17:13,572 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:17:13,572 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:17:13,572 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:17:13,572 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:17:13,572 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:17:13,573 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:17:13,573 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:17:13,573 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:17:13,573 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ex06_false-termination_true-no-overflow.c_Iteration3_Loop [2018-11-28 23:17:13,573 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:17:13,573 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:17:13,576 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:17:13,608 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:17:13,617 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:17:13,693 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:17:13,693 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 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 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:17:13,697 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:17:13,697 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:17:13,722 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:17:13,722 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-11-28 23:17:13,735 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:17:13,735 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:17:13,759 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:17:13,759 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-11-28 23:17:13,769 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:17:13,771 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:17:13,806 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:17:13,806 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:17:13,816 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:17:13,833 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:17:13,833 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:17:13,834 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:17:13,834 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:17:13,834 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:17:13,834 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:17:13,834 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:17:13,834 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:17:13,834 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ex06_false-termination_true-no-overflow.c_Iteration3_Loop [2018-11-28 23:17:13,835 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:17:13,835 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:17:13,837 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:17:13,850 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:17:13,855 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:17:14,043 WARN L180 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-11-28 23:17:14,348 WARN L180 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-11-28 23:17:14,349 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:17:14,350 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:17:14,350 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:17:14,351 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:17:14,352 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:17:14,352 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:17:14,352 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:17:14,355 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:17:14,355 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:17:14,361 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:17:14,362 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:17:14,362 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:17:14,363 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:17:14,363 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:17:14,363 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:17:14,365 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:17:14,365 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:17:14,372 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:17:14,373 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:17:14,374 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:17:14,374 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:17:14,374 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:17:14,374 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:17:14,374 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:17:14,375 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:17:14,376 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:17:14,381 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:17:14,385 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:17:14,385 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:17:14,385 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:17:14,386 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:17:14,386 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:17:14,386 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2018-11-28 23:17:14,387 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:17:14,450 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:14,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:17:14,455 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:17:14,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:17:14,467 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:17:14,477 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 23:17:14,478 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-28 23:17:14,478 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand 3 states. [2018-11-28 23:17:14,513 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 18 states and 24 transitions. Complement of second has 4 states. [2018-11-28 23:17:14,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 23:17:14,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:17:14,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2018-11-28 23:17:14,515 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 3 letters. Loop has 3 letters. [2018-11-28 23:17:14,515 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:17:14,516 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-28 23:17:14,516 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:17:14,516 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 3 letters. Loop has 6 letters. [2018-11-28 23:17:14,516 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:17:14,516 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 24 transitions. [2018-11-28 23:17:14,518 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-11-28 23:17:14,518 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 18 states and 24 transitions. [2018-11-28 23:17:14,519 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-11-28 23:17:14,519 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-11-28 23:17:14,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 24 transitions. [2018-11-28 23:17:14,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:17:14,519 INFO L705 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2018-11-28 23:17:14,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 24 transitions. [2018-11-28 23:17:14,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 14. [2018-11-28 23:17:14,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-28 23:17:14,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 20 transitions. [2018-11-28 23:17:14,522 INFO L728 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2018-11-28 23:17:14,522 INFO L608 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2018-11-28 23:17:14,522 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-28 23:17:14,522 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 20 transitions. [2018-11-28 23:17:14,523 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 23:17:14,523 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:17:14,523 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:17:14,524 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-28 23:17:14,524 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:17:14,524 INFO L794 eck$LassoCheckResult]: Stem: 168#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; 169#L13-1 assume !!(main_~i~0 >= -5 && main_~i~0 <= 5); 176#L10 assume !(main_~i~0 > 0); 164#L10-2 [2018-11-28 23:17:14,524 INFO L796 eck$LassoCheckResult]: Loop: 164#L10-2 assume !(main_~i~0 < 0); 170#L13-1 assume !!(main_~i~0 >= -5 && main_~i~0 <= 5); 163#L10 assume !(main_~i~0 > 0); 164#L10-2 [2018-11-28 23:17:14,524 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:14,525 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2018-11-28 23:17:14,525 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:14,525 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:14,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:14,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:17:14,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:14,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:14,541 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:14,542 INFO L82 PathProgramCache]: Analyzing trace with hash 50297, now seen corresponding path program 1 times [2018-11-28 23:17:14,542 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:14,542 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:14,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:14,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:17:14,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:14,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:14,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:14,559 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:14,559 INFO L82 PathProgramCache]: Analyzing trace with hash 925835413, now seen corresponding path program 1 times [2018-11-28 23:17:14,559 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:14,559 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:14,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:14,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:17:14,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:14,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:14,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:14,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 11:17:14 BoogieIcfgContainer [2018-11-28 23:17:14,731 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 23:17:14,731 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:17:14,731 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:17:14,731 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:17:14,732 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:17:11" (3/4) ... [2018-11-28 23:17:14,735 INFO L141 WitnessPrinter]: Generating witness for non-termination counterexample [2018-11-28 23:17:14,773 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 23:17:14,773 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:17:14,774 INFO L168 Benchmark]: Toolchain (without parser) took 3950.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 952.7 MB in the beginning and 971.7 MB in the end (delta: -19.0 MB). Peak memory consumption was 125.2 MB. Max. memory is 11.5 GB. [2018-11-28 23:17:14,775 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. [2018-11-28 23:17:14,776 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.25 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:17:14,777 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.98 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:17:14,777 INFO L168 Benchmark]: Boogie Preprocessor took 25.09 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:17:14,778 INFO L168 Benchmark]: RCFGBuilder took 446.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -184.0 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. [2018-11-28 23:17:14,778 INFO L168 Benchmark]: BuchiAutomizer took 3083.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 978.4 MB in the end (delta: 140.8 MB). Peak memory consumption was 140.8 MB. Max. memory is 11.5 GB. [2018-11-28 23:17:14,779 INFO L168 Benchmark]: Witness Printer took 41.85 ms. Allocated memory is still 1.2 GB. Free memory was 978.4 MB in the beginning and 971.7 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:17:14,784 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 307.25 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 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 40.98 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.09 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 446.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -184.0 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3083.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 978.4 MB in the end (delta: 140.8 MB). Peak memory consumption was 140.8 MB. Max. memory is 11.5 GB. * Witness Printer took 41.85 ms. Allocated memory is still 1.2 GB. Free memory was 978.4 MB in the beginning and 971.7 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 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 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * i and consists of 5 locations. One deterministic module has affine ranking function i and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 14 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.0s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 2.2s. Construction of modules took 0.2s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 14 states and ocurred in iteration 3. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 19 SDtfs, 19 SDslu, 3 SDs, 0 SdLazy, 34 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax186 hnf100 lsp53 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq143 hnf94 smp100 dnf100 smp100 tf110 neg100 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 10ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 13]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6e921488=0, \result=0, i=0} - 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() [L9] COND TRUE i >= -5 && i <= 5 [L10] COND FALSE !(i > 0) Loop: [L13] COND FALSE !(i < 0) [L9] COND TRUE i >= -5 && i <= 5 [L10] COND FALSE !(i > 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...