./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a_true-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-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a_true-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 df3ddc93bc6339292c9158119f1fdb949bb8842d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-2e94e6a [2019-01-01 21:34:07,869 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-01 21:34:07,871 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-01 21:34:07,885 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-01 21:34:07,885 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-01 21:34:07,886 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-01 21:34:07,888 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-01 21:34:07,890 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-01 21:34:07,891 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-01 21:34:07,892 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-01 21:34:07,893 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-01 21:34:07,893 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-01 21:34:07,894 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-01 21:34:07,895 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-01 21:34:07,896 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-01 21:34:07,897 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-01 21:34:07,898 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-01 21:34:07,900 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-01 21:34:07,902 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-01 21:34:07,904 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-01 21:34:07,905 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-01 21:34:07,907 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-01 21:34:07,910 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-01 21:34:07,910 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-01 21:34:07,910 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-01 21:34:07,911 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-01 21:34:07,913 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-01 21:34:07,914 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-01 21:34:07,915 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-01 21:34:07,916 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-01 21:34:07,916 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-01 21:34:07,917 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-01 21:34:07,917 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-01 21:34:07,917 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-01 21:34:07,919 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-01 21:34:07,920 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-01 21:34:07,920 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-01-01 21:34:07,938 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-01 21:34:07,939 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-01 21:34:07,940 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-01 21:34:07,940 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-01 21:34:07,940 INFO L133 SettingsManager]: * Use SBE=true [2019-01-01 21:34:07,941 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-01-01 21:34:07,941 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-01-01 21:34:07,941 INFO L133 SettingsManager]: * Use old map elimination=false [2019-01-01 21:34:07,941 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2019-01-01 21:34:07,941 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2019-01-01 21:34:07,942 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-01-01 21:34:07,942 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-01 21:34:07,942 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-01 21:34:07,942 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-01 21:34:07,943 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-01 21:34:07,943 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-01-01 21:34:07,943 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-01-01 21:34:07,943 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-01-01 21:34:07,943 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-01 21:34:07,943 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-01-01 21:34:07,944 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-01 21:34:07,944 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-01-01 21:34:07,944 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-01 21:34:07,944 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-01 21:34:07,944 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-01-01 21:34:07,945 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-01 21:34:07,945 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-01 21:34:07,945 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-01-01 21:34:07,946 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-01-01 21:34:07,946 INFO L133 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df3ddc93bc6339292c9158119f1fdb949bb8842d [2019-01-01 21:34:07,985 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-01 21:34:07,999 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-01 21:34:08,003 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-01 21:34:08,004 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-01 21:34:08,005 INFO L276 PluginConnector]: CDTParser initialized [2019-01-01 21:34:08,005 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c [2019-01-01 21:34:08,057 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa1f2ed86/4d3a88aa6cbb442aaf200f36a5eceee6/FLAG3e9c5a970 [2019-01-01 21:34:08,490 INFO L307 CDTParser]: Found 1 translation units. [2019-01-01 21:34:08,491 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c [2019-01-01 21:34:08,501 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa1f2ed86/4d3a88aa6cbb442aaf200f36a5eceee6/FLAG3e9c5a970 [2019-01-01 21:34:08,859 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa1f2ed86/4d3a88aa6cbb442aaf200f36a5eceee6 [2019-01-01 21:34:08,863 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-01 21:34:08,865 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-01 21:34:08,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-01 21:34:08,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-01 21:34:08,870 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-01 21:34:08,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 09:34:08" (1/1) ... [2019-01-01 21:34:08,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@395052b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:34:08, skipping insertion in model container [2019-01-01 21:34:08,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 09:34:08" (1/1) ... [2019-01-01 21:34:08,884 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-01 21:34:08,904 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-01 21:34:09,146 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 21:34:09,152 INFO L191 MainTranslator]: Completed pre-run [2019-01-01 21:34:09,173 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 21:34:09,193 INFO L195 MainTranslator]: Completed translation [2019-01-01 21:34:09,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:34:09 WrapperNode [2019-01-01 21:34:09,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-01 21:34:09,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-01 21:34:09,195 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-01 21:34:09,195 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-01 21:34:09,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:34:09" (1/1) ... [2019-01-01 21:34:09,215 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:34:09" (1/1) ... [2019-01-01 21:34:09,246 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-01 21:34:09,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-01 21:34:09,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-01 21:34:09,247 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-01 21:34:09,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:34:09" (1/1) ... [2019-01-01 21:34:09,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:34:09" (1/1) ... [2019-01-01 21:34:09,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:34:09" (1/1) ... [2019-01-01 21:34:09,261 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:34:09" (1/1) ... [2019-01-01 21:34:09,264 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:34:09" (1/1) ... [2019-01-01 21:34:09,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:34:09" (1/1) ... [2019-01-01 21:34:09,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:34:09" (1/1) ... [2019-01-01 21:34:09,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-01 21:34:09,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-01 21:34:09,279 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-01 21:34:09,279 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-01 21:34:09,281 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:34:09" (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 21:34:09,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-01 21:34:09,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-01 21:34:09,593 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-01 21:34:09,593 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2019-01-01 21:34:09,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 09:34:09 BoogieIcfgContainer [2019-01-01 21:34:09,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-01 21:34:09,594 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-01-01 21:34:09,595 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-01-01 21:34:09,599 INFO L276 PluginConnector]: BuchiAutomizer initialized [2019-01-01 21:34:09,600 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-01 21:34:09,600 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.01 09:34:08" (1/3) ... [2019-01-01 21:34:09,602 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7ad53746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.01 09:34:09, skipping insertion in model container [2019-01-01 21:34:09,602 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-01 21:34:09,602 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:34:09" (2/3) ... [2019-01-01 21:34:09,602 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7ad53746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.01 09:34:09, skipping insertion in model container [2019-01-01 21:34:09,602 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-01 21:34:09,603 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 09:34:09" (3/3) ... [2019-01-01 21:34:09,604 INFO L375 chiAutomizerObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c [2019-01-01 21:34:09,672 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-01 21:34:09,673 INFO L374 BuchiCegarLoop]: Interprodecural is true [2019-01-01 21:34:09,673 INFO L375 BuchiCegarLoop]: Hoare is false [2019-01-01 21:34:09,673 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-01-01 21:34:09,673 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-01 21:34:09,673 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-01 21:34:09,673 INFO L379 BuchiCegarLoop]: Difference is false [2019-01-01 21:34:09,674 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-01 21:34:09,674 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-01-01 21:34:09,691 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-01-01 21:34:09,712 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-01-01 21:34:09,712 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-01 21:34:09,713 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-01 21:34:09,719 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-01-01 21:34:09,719 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-01-01 21:34:09,719 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2019-01-01 21:34:09,719 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-01-01 21:34:09,720 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-01-01 21:34:09,721 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-01 21:34:09,721 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-01 21:34:09,721 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-01-01 21:34:09,721 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-01-01 21:34:09,730 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~x~0;havoc main_~x~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0; 3#L17-2true [2019-01-01 21:34:09,731 INFO L796 eck$LassoCheckResult]: Loop: 3#L17-2true assume !!(0 != main_~x~0); 5#L17true assume main_~x~0 > 0;main_~x~0 := main_~x~0 - 1; 3#L17-2true [2019-01-01 21:34:09,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:34:09,739 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-01-01 21:34:09,742 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:34:09,743 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:34:09,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:34:09,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:34:09,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:34:09,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:34:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:34:09,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:34:09,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2019-01-01 21:34:09,865 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:34:09,865 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:34:09,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:34:09,867 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:34:09,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:34:09,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:34:09,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:34:09,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:34:09,880 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2019-01-01 21:34:09,880 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:34:09,880 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:34:09,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:34:09,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:34:09,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:34:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:34:09,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:34:10,064 WARN L181 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 8 [2019-01-01 21:34:10,126 INFO L216 LassoAnalysis]: Preferences: [2019-01-01 21:34:10,128 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-01 21:34:10,129 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-01 21:34:10,129 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-01 21:34:10,129 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-01-01 21:34:10,129 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 21:34:10,130 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-01 21:34:10,130 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-01 21:34:10,130 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c_Iteration1_Loop [2019-01-01 21:34:10,131 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-01 21:34:10,131 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-01 21:34:10,158 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:34:10,186 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:34:10,200 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:34:10,571 WARN L181 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2019-01-01 21:34:10,579 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-01 21:34:10,580 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) [2019-01-01 21:34:10,593 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-01 21:34:10,593 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 21:34:10,653 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-01 21:34:10,653 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 [2019-01-01 21:34:10,665 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-01 21:34:10,665 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-01 21:34:10,695 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-01 21:34:10,696 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 [2019-01-01 21:34:10,701 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-01 21:34:10,702 INFO L163 nArgumentSynthesizer]: Using integer mode. 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) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 21:34:10,726 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-01-01 21:34:10,727 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-01 21:34:10,751 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-01-01 21:34:10,753 INFO L216 LassoAnalysis]: Preferences: [2019-01-01 21:34:10,753 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-01 21:34:10,754 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-01 21:34:10,754 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-01 21:34:10,754 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-01-01 21:34:10,754 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 21:34:10,754 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-01 21:34:10,754 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-01 21:34:10,754 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c_Iteration1_Loop [2019-01-01 21:34:10,755 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-01 21:34:10,755 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-01 21:34:10,758 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:34:10,778 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:34:10,793 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:34:11,146 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-01 21:34:11,152 INFO L497 LassoAnalysis]: Using template 'affine'. [2019-01-01 21:34:11,153 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 [2019-01-01 21:34:11,156 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-01 21:34:11,157 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-01 21:34:11,157 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-01 21:34:11,157 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-01 21:34:11,166 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-01-01 21:34:11,166 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-01-01 21:34:11,187 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-01 21:34:11,188 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 [2019-01-01 21:34:11,189 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-01 21:34:11,189 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-01 21:34:11,191 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-01 21:34:11,191 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-01 21:34:11,196 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-01-01 21:34:11,196 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-01-01 21:34:11,219 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-01 21:34:11,220 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 [2019-01-01 21:34:11,221 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-01 21:34:11,221 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-01-01 21:34:11,222 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-01 21:34:11,222 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-01 21:34:11,222 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-01 21:34:11,223 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-01-01 21:34:11,223 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-01-01 21:34:11,241 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-01-01 21:34:11,248 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-01-01 21:34:11,251 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-01-01 21:34:11,254 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-01-01 21:34:11,255 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-01-01 21:34:11,255 INFO L518 LassoAnalysis]: Proved termination. [2019-01-01 21:34:11,256 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-01-01 21:34:11,258 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-01-01 21:34:11,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:34:11,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 21:34:11,359 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 21:34:11,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 21:34:11,368 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 21:34:11,371 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 21:34:11,387 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-01-01 21:34:11,389 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2019-01-01 21:34:11,446 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 23 states and 30 transitions. Complement of second has 6 states. [2019-01-01 21:34:11,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-01-01 21:34:11,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-01-01 21:34:11,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2019-01-01 21:34:11,451 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 2 letters. [2019-01-01 21:34:11,452 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 21:34:11,452 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 2 letters. [2019-01-01 21:34:11,453 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 21:34:11,453 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 4 letters. [2019-01-01 21:34:11,453 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 21:34:11,454 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2019-01-01 21:34:11,457 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-01-01 21:34:11,462 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2019-01-01 21:34:11,464 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-01-01 21:34:11,464 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-01-01 21:34:11,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2019-01-01 21:34:11,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-01-01 21:34:11,465 INFO L705 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-01-01 21:34:11,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2019-01-01 21:34:11,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-01-01 21:34:11,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-01-01 21:34:11,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2019-01-01 21:34:11,500 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-01-01 21:34:11,500 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-01-01 21:34:11,500 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2019-01-01 21:34:11,500 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2019-01-01 21:34:11,501 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-01-01 21:34:11,501 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-01 21:34:11,501 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-01 21:34:11,501 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-01-01 21:34:11,502 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-01-01 21:34:11,502 INFO L794 eck$LassoCheckResult]: Stem: 68#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0;havoc main_~x~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0; 69#L17-2 assume !!(0 != main_~x~0); 67#L17 assume !(main_~x~0 > 0);main_~x~0 := 1 + main_~x~0; 63#L17-2 [2019-01-01 21:34:11,502 INFO L796 eck$LassoCheckResult]: Loop: 63#L17-2 assume !!(0 != main_~x~0); 64#L17 assume main_~x~0 > 0;main_~x~0 := main_~x~0 - 1; 63#L17-2 [2019-01-01 21:34:11,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:34:11,503 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2019-01-01 21:34:11,503 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:34:11,503 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:34:11,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:34:11,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:34:11,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:34:11,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:34:11,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:34:11,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:34:11,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2019-01-01 21:34:11,518 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:34:11,519 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:34:11,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:34:11,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:34:11,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:34:11,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:34:11,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:34:11,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:34:11,543 INFO L82 PathProgramCache]: Analyzing trace with hash 29865320, now seen corresponding path program 1 times [2019-01-01 21:34:11,543 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:34:11,543 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:34:11,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:34:11,545 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-01-01 21:34:11,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:34:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 21:34:11,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 21:34:11,620 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-01 21:34:11,620 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-01 21:34:11,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:34:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 21:34:11,639 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 21:34:11,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 21:34:11,685 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-01-01 21:34:11,685 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-01-01 21:34:11,716 INFO L216 LassoAnalysis]: Preferences: [2019-01-01 21:34:11,716 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-01 21:34:11,716 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-01 21:34:11,716 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-01 21:34:11,716 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-01-01 21:34:11,717 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 21:34:11,717 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-01 21:34:11,717 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-01 21:34:11,717 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c_Iteration2_Loop [2019-01-01 21:34:11,717 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-01 21:34:11,717 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-01 21:34:11,719 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:34:11,727 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:34:11,733 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:34:11,915 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-01 21:34:11,915 INFO L412 LassoAnalysis]: Checking for nontermination... 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 [2019-01-01 21:34:11,919 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-01 21:34:11,920 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-01 21:34:11,941 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-01 21:34:11,941 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 8 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 21:34:11,947 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-01 21:34:11,947 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-01 21:34:11,968 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-01 21:34:11,968 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 9 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 21:34:11,973 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-01 21:34:11,973 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 21:34:11,997 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-01-01 21:34:11,998 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-01 21:34:12,021 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-01-01 21:34:12,023 INFO L216 LassoAnalysis]: Preferences: [2019-01-01 21:34:12,023 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-01 21:34:12,023 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-01 21:34:12,024 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-01 21:34:12,024 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-01-01 21:34:12,024 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 21:34:12,024 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-01 21:34:12,024 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-01 21:34:12,024 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c_Iteration2_Loop [2019-01-01 21:34:12,024 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-01 21:34:12,025 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-01 21:34:12,027 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:34:12,040 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:34:12,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:34:12,138 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-01 21:34:12,139 INFO L497 LassoAnalysis]: Using template 'affine'. [2019-01-01 21:34:12,140 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 [2019-01-01 21:34:12,143 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-01 21:34:12,143 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-01 21:34:12,143 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-01 21:34:12,144 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-01 21:34:12,147 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-01-01 21:34:12,147 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-01-01 21:34:12,152 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-01 21:34:12,153 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 [2019-01-01 21:34:12,154 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-01 21:34:12,154 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-01 21:34:12,155 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-01 21:34:12,156 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-01 21:34:12,159 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-01-01 21:34:12,159 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-01-01 21:34:12,166 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-01 21:34:12,166 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 [2019-01-01 21:34:12,167 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-01 21:34:12,167 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-01-01 21:34:12,168 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-01 21:34:12,168 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-01 21:34:12,168 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-01 21:34:12,171 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-01-01 21:34:12,171 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-01-01 21:34:12,176 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-01-01 21:34:12,180 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-01-01 21:34:12,181 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-01-01 21:34:12,181 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-01-01 21:34:12,181 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-01-01 21:34:12,182 INFO L518 LassoAnalysis]: Proved termination. [2019-01-01 21:34:12,184 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-01-01 21:34:12,184 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-01-01 21:34:12,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:34:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 21:34:12,286 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 21:34:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 21:34:12,310 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 21:34:12,310 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 21:34:12,311 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-01-01 21:34:12,311 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-01-01 21:34:12,414 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 11 states and 16 transitions. Complement of second has 5 states. [2019-01-01 21:34:12,415 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 [2019-01-01 21:34:12,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-01-01 21:34:12,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-01-01 21:34:12,417 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2019-01-01 21:34:12,417 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 21:34:12,417 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2019-01-01 21:34:12,418 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 21:34:12,418 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2019-01-01 21:34:12,418 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 21:34:12,418 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 16 transitions. [2019-01-01 21:34:12,419 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-01-01 21:34:12,422 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 16 transitions. [2019-01-01 21:34:12,423 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-01-01 21:34:12,423 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-01-01 21:34:12,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2019-01-01 21:34:12,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-01-01 21:34:12,423 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-01-01 21:34:12,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2019-01-01 21:34:12,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-01-01 21:34:12,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-01-01 21:34:12,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2019-01-01 21:34:12,427 INFO L728 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-01-01 21:34:12,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-01 21:34:12,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-01 21:34:12,434 INFO L87 Difference]: Start difference. First operand 11 states and 16 transitions. Second operand 4 states. [2019-01-01 21:34:12,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-01 21:34:12,681 INFO L93 Difference]: Finished difference Result 10 states and 12 transitions. [2019-01-01 21:34:12,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-01 21:34:12,685 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2019-01-01 21:34:12,687 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-01-01 21:34:12,690 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 9 states and 11 transitions. [2019-01-01 21:34:12,690 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-01-01 21:34:12,690 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-01-01 21:34:12,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 11 transitions. [2019-01-01 21:34:12,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-01-01 21:34:12,692 INFO L705 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2019-01-01 21:34:12,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 11 transitions. [2019-01-01 21:34:12,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 6. [2019-01-01 21:34:12,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-01-01 21:34:12,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2019-01-01 21:34:12,693 INFO L728 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2019-01-01 21:34:12,696 INFO L608 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2019-01-01 21:34:12,697 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2019-01-01 21:34:12,697 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2019-01-01 21:34:12,697 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-01-01 21:34:12,698 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-01 21:34:12,698 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-01 21:34:12,699 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-01-01 21:34:12,701 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-01-01 21:34:12,701 INFO L794 eck$LassoCheckResult]: Stem: 157#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0;havoc main_~x~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0; 158#L17-2 assume !!(0 != main_~x~0); 154#L17 [2019-01-01 21:34:12,701 INFO L796 eck$LassoCheckResult]: Loop: 154#L17 assume !(main_~x~0 > 0);main_~x~0 := 1 + main_~x~0; 153#L17-2 assume !!(0 != main_~x~0); 154#L17 [2019-01-01 21:34:12,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:34:12,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-01-01 21:34:12,702 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:34:12,702 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:34:12,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:34:12,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:34:12,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:34:12,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:34:12,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:34:12,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:34:12,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 1 times [2019-01-01 21:34:12,723 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:34:12,723 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:34:12,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:34:12,726 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:34:12,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:34:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:34:12,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:34:12,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:34:12,745 INFO L82 PathProgramCache]: Analyzing trace with hash 963397, now seen corresponding path program 2 times [2019-01-01 21:34:12,745 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:34:12,745 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:34:12,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:34:12,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:34:12,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:34:12,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:34:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:34:12,862 INFO L216 LassoAnalysis]: Preferences: [2019-01-01 21:34:12,863 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-01 21:34:12,863 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-01 21:34:12,863 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-01 21:34:12,863 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-01-01 21:34:12,864 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 21:34:12,864 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-01 21:34:12,864 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-01 21:34:12,864 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c_Iteration3_Loop [2019-01-01 21:34:12,865 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-01 21:34:12,865 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-01 21:34:12,866 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:34:12,878 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:34:12,890 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:34:13,144 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-01 21:34:13,144 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 21:34:13,149 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-01 21:34:13,149 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-01 21:34:13,171 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-01 21:34:13,171 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 21:34:13,177 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-01 21:34:13,177 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 21:34:13,200 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-01-01 21:34:13,200 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-01 21:34:13,284 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-01-01 21:34:13,286 INFO L216 LassoAnalysis]: Preferences: [2019-01-01 21:34:13,286 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-01 21:34:13,286 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-01 21:34:13,286 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-01 21:34:13,286 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-01-01 21:34:13,286 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 21:34:13,287 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-01 21:34:13,287 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-01 21:34:13,287 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c_Iteration3_Loop [2019-01-01 21:34:13,287 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-01 21:34:13,287 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-01 21:34:13,289 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:34:13,304 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:34:13,318 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:34:13,423 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-01 21:34:13,423 INFO L497 LassoAnalysis]: Using template 'affine'. [2019-01-01 21:34:13,424 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 [2019-01-01 21:34:13,425 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-01 21:34:13,425 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-01 21:34:13,425 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-01 21:34:13,426 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-01 21:34:13,427 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-01-01 21:34:13,428 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-01-01 21:34:13,432 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-01 21:34:13,433 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 [2019-01-01 21:34:13,434 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-01 21:34:13,434 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-01-01 21:34:13,434 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-01 21:34:13,434 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2019-01-01 21:34:13,435 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-01 21:34:13,436 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-01-01 21:34:13,436 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-01-01 21:34:13,443 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-01-01 21:34:13,448 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-01-01 21:34:13,448 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-01-01 21:34:13,449 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-01-01 21:34:13,449 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-01-01 21:34:13,449 INFO L518 LassoAnalysis]: Proved termination. [2019-01-01 21:34:13,449 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2019-01-01 21:34:13,450 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-01-01 21:34:13,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:34:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 21:34:13,506 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 21:34:13,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 21:34:13,511 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 21:34:13,586 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 21:34:13,586 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 [2019-01-01 21:34:13,586 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-01-01 21:34:13,604 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 11 states and 13 transitions. Complement of second has 5 states. [2019-01-01 21:34:13,610 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 [2019-01-01 21:34:13,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-01-01 21:34:13,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-01-01 21:34:13,611 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2019-01-01 21:34:13,611 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 21:34:13,611 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 4 letters. Loop has 2 letters. [2019-01-01 21:34:13,611 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 21:34:13,611 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 4 letters. [2019-01-01 21:34:13,612 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 21:34:13,612 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2019-01-01 21:34:13,613 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-01-01 21:34:13,613 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 7 states and 8 transitions. [2019-01-01 21:34:13,613 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-01-01 21:34:13,613 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2019-01-01 21:34:13,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2019-01-01 21:34:13,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-01-01 21:34:13,614 INFO L705 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2019-01-01 21:34:13,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2019-01-01 21:34:13,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2019-01-01 21:34:13,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-01-01 21:34:13,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2019-01-01 21:34:13,615 INFO L728 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-01-01 21:34:13,615 INFO L608 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-01-01 21:34:13,616 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2019-01-01 21:34:13,616 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2019-01-01 21:34:13,616 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-01-01 21:34:13,616 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-01 21:34:13,616 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-01 21:34:13,617 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1] [2019-01-01 21:34:13,617 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-01-01 21:34:13,617 INFO L794 eck$LassoCheckResult]: Stem: 207#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0;havoc main_~x~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0; 203#L17-2 assume !!(0 != main_~x~0); 204#L17 assume main_~x~0 > 0;main_~x~0 := main_~x~0 - 1; 205#L17-2 assume !!(0 != main_~x~0); 206#L17 [2019-01-01 21:34:13,617 INFO L796 eck$LassoCheckResult]: Loop: 206#L17 assume !(main_~x~0 > 0);main_~x~0 := 1 + main_~x~0; 208#L17-2 assume !!(0 != main_~x~0); 206#L17 [2019-01-01 21:34:13,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:34:13,618 INFO L82 PathProgramCache]: Analyzing trace with hash 963335, now seen corresponding path program 2 times [2019-01-01 21:34:13,618 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:34:13,618 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:34:13,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:34:13,620 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-01-01 21:34:13,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:34:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:34:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:34:13,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:34:13,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 2 times [2019-01-01 21:34:13,632 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:34:13,633 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:34:13,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:34:13,637 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-01-01 21:34:13,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:34:13,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:34:13,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:34:13,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:34:13,645 INFO L82 PathProgramCache]: Analyzing trace with hash 925765410, now seen corresponding path program 2 times [2019-01-01 21:34:13,645 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:34:13,645 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:34:13,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:34:13,648 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-01-01 21:34:13,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:34:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 21:34:13,748 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 21:34:13,748 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-01 21:34:13,748 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-01 21:34:13,784 INFO L216 LassoAnalysis]: Preferences: [2019-01-01 21:34:13,784 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-01 21:34:13,784 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-01 21:34:13,785 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-01 21:34:13,785 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-01-01 21:34:13,785 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 21:34:13,785 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-01 21:34:13,785 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-01 21:34:13,785 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c_Iteration4_Loop [2019-01-01 21:34:13,785 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-01 21:34:13,786 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-01 21:34:13,787 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:34:13,790 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:34:13,802 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:34:14,015 WARN L181 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 15 [2019-01-01 21:34:14,021 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-01 21:34:14,022 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 21:34:14,027 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-01 21:34:14,027 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-01 21:34:14,047 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-01 21:34:14,048 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 21:34:14,053 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-01 21:34:14,054 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 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 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 21:34:14,077 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-01-01 21:34:14,077 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-01 21:34:14,158 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-01-01 21:34:14,160 INFO L216 LassoAnalysis]: Preferences: [2019-01-01 21:34:14,160 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-01 21:34:14,160 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-01 21:34:14,160 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-01 21:34:14,160 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-01-01 21:34:14,161 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 21:34:14,161 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-01 21:34:14,161 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-01 21:34:14,161 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c_Iteration4_Loop [2019-01-01 21:34:14,161 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-01 21:34:14,161 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-01 21:34:14,163 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:34:14,166 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:34:14,186 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:34:14,295 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-01 21:34:14,296 INFO L497 LassoAnalysis]: Using template 'affine'. [2019-01-01 21:34:14,299 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 [2019-01-01 21:34:14,299 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-01 21:34:14,300 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-01 21:34:14,300 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-01 21:34:14,300 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-01 21:34:14,303 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-01-01 21:34:14,303 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-01-01 21:34:14,307 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-01 21:34:14,307 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 [2019-01-01 21:34:14,310 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-01 21:34:14,311 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-01-01 21:34:14,311 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-01 21:34:14,311 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2019-01-01 21:34:14,311 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-01 21:34:14,312 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-01-01 21:34:14,312 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-01-01 21:34:14,320 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-01-01 21:34:14,333 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-01-01 21:34:14,333 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-01-01 21:34:14,334 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-01-01 21:34:14,334 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-01-01 21:34:14,334 INFO L518 LassoAnalysis]: Proved termination. [2019-01-01 21:34:14,334 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2019-01-01 21:34:14,335 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-01-01 21:34:14,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:34:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 21:34:14,396 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 21:34:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 21:34:14,400 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 21:34:14,423 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 21:34:14,423 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 [2019-01-01 21:34:14,423 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-01-01 21:34:14,433 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 7 states and 8 transitions. Complement of second has 3 states. [2019-01-01 21:34:14,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2019-01-01 21:34:14,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-01-01 21:34:14,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2019-01-01 21:34:14,435 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 4 letters. Loop has 2 letters. [2019-01-01 21:34:14,435 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 21:34:14,436 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-01-01 21:34:14,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:34:14,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 21:34:14,460 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 21:34:14,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 21:34:14,487 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 21:34:14,515 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 21:34:14,515 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-01-01 21:34:14,516 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-01-01 21:34:14,525 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 7 states and 8 transitions. Complement of second has 3 states. [2019-01-01 21:34:14,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2019-01-01 21:34:14,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-01-01 21:34:14,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2019-01-01 21:34:14,527 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 4 letters. Loop has 2 letters. [2019-01-01 21:34:14,527 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 21:34:14,528 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-01-01 21:34:14,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:34:14,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 21:34:14,555 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 21:34:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 21:34:14,561 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 21:34:14,577 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 21:34:14,577 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-01-01 21:34:14,578 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-01-01 21:34:14,597 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 8 states and 9 transitions. Complement of second has 4 states. [2019-01-01 21:34:14,600 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 [2019-01-01 21:34:14,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-01-01 21:34:14,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2019-01-01 21:34:14,601 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2019-01-01 21:34:14,601 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 21:34:14,602 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2019-01-01 21:34:14,602 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 21:34:14,602 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 4 letters. [2019-01-01 21:34:14,603 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 21:34:14,603 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 9 transitions. [2019-01-01 21:34:14,603 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-01-01 21:34:14,604 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 0 states and 0 transitions. [2019-01-01 21:34:14,604 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-01-01 21:34:14,604 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-01-01 21:34:14,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-01-01 21:34:14,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-01-01 21:34:14,604 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-01 21:34:14,604 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-01 21:34:14,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-01 21:34:14,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-01-01 21:34:14,606 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 4 states. [2019-01-01 21:34:14,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-01 21:34:14,606 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-01-01 21:34:14,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-01-01 21:34:14,607 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-01-01 21:34:14,607 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-01-01 21:34:14,607 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-01-01 21:34:14,607 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-01-01 21:34:14,607 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-01-01 21:34:14,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-01-01 21:34:14,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-01-01 21:34:14,608 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-01 21:34:14,608 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-01 21:34:14,608 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-01 21:34:14,608 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2019-01-01 21:34:14,608 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-01-01 21:34:14,608 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-01-01 21:34:14,609 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-01-01 21:34:14,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.01 09:34:14 BoogieIcfgContainer [2019-01-01 21:34:14,617 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-01-01 21:34:14,618 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-01 21:34:14,618 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-01 21:34:14,618 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-01 21:34:14,619 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 09:34:09" (3/4) ... [2019-01-01 21:34:14,623 INFO L147 WitnessPrinter]: No result that supports witness generation found [2019-01-01 21:34:14,623 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-01 21:34:14,624 INFO L168 Benchmark]: Toolchain (without parser) took 5760.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 943.3 MB in the beginning and 825.1 MB in the end (delta: 118.2 MB). Peak memory consumption was 241.4 MB. Max. memory is 11.5 GB. [2019-01-01 21:34:14,626 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 21:34:14,628 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.16 ms. Allocated memory is still 1.0 GB. Free memory was 943.3 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-01 21:34:14,630 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.79 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 21:34:14,632 INFO L168 Benchmark]: Boogie Preprocessor took 31.87 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 21:34:14,634 INFO L168 Benchmark]: RCFGBuilder took 314.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 932.6 MB in the beginning and 1.1 GB in the end (delta: -167.7 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. [2019-01-01 21:34:14,635 INFO L168 Benchmark]: BuchiAutomizer took 5022.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 825.1 MB in the end (delta: 275.2 MB). Peak memory consumption was 275.2 MB. Max. memory is 11.5 GB. [2019-01-01 21:34:14,637 INFO L168 Benchmark]: Witness Printer took 5.95 ms. Allocated memory is still 1.2 GB. Free memory is still 825.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 21:34:14,643 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 328.16 ms. Allocated memory is still 1.0 GB. Free memory was 943.3 MB in the beginning and 932.6 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 51.79 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.87 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 314.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 932.6 MB in the beginning and 1.1 GB in the end (delta: -167.7 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 5022.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 825.1 MB in the end (delta: 275.2 MB). Peak memory consumption was 275.2 MB. Max. memory is 11.5 GB. * Witness Printer took 5.95 ms. Allocated memory is still 1.2 GB. Free memory is still 825.1 MB. 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 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function x and consists of 3 locations. One deterministic module has affine ranking function -2 * x + 1 and consists of 3 locations. One nondeterministic module has affine ranking function -2 * x + 1 and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.9s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 3.7s. Construction of modules took 0.2s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 20 SDtfs, 18 SDslu, 3 SDs, 0 SdLazy, 43 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax200 hnf98 lsp49 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq165 hnf94 smp100 dnf132 smp89 tf110 neg96 sie112 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 30ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...